Post on 29-Mar-2015
Bridging the Gap Bridging the Gap
Problem-SolvingProblem-SolvingPupils’ VersionPupils’ Version
Note to PupilsNote to PupilsDo you know the difference betweenDo you know the difference between
AreaArea and and PerimeterPerimeter??
Do you have problems knowing how to get started on tricky Do you have problems knowing how to get started on tricky maths maths problemsproblems??
This resource will help you to…This resource will help you to…- Learn about the area and perimeter of rectangles
- and shapes made from them
- and become an expert at cracking problems!
- Using a simple 4-step guide to problem-solving!
How to use this resourceHow to use this resourceYou can control how fast or slow you go using:
FORWARD: OR OR Enter OR Left-hand mouse
BACK: OR OR Back Space
TO START POWERPOINT: F5 OR Slide Show > View Show
TO RETURN TO MENU: Escape
ContentsContents
A. Learning Area (Start here to revise your learning)
B. Test Yourself: Now It’s Your Turn! (Start here if you just want to test yourself)
C. Where To Next? (Suggestions for main menu)
(TO GO TO LINK, HOLD DOWN CONTROL AND CLICK ON YOUR CHOICE)
Which One Are You ???Which One Are You ???
R UR U a a PProblemroblem-C-Coward oward ??… … or …or …
R UR U a a PProblemroblem-C-Crackerracker??
PROBLEM!
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Read it ! Underline It !
Picture It! !
Calculate It !
R U PC?R U PC?
R U P CR U P C ? ?RRead it! ead it! … what’s it about?… what’s it about?
UUnderline it! nderline it! … find the clues… find the clues
PPicture it! icture it! … add?… add? subtract? multiply? divide? subtract? multiply? divide?
… … use a number line to helpuse a number line to help
CCalculate it! alculate it! … work… work it out ! it out ! But first …
Check out the basics
about areas and perimeters
of rectangles
…
How to become How to become aa PROBLEM-CRACKERPROBLEM-CRACKER
inin 4 Easy Steps! 4 Easy Steps!
Now you’re ready to try out some
problems!
The Area of a Rectangle …The Area of a Rectangle … means … the amount of surface inside and measured by … the number of squares inside (eg: square centimetres, square metres, square feet, square yards)
- Or LENGTH X WIDTH- Or LENGTH X WIDTH
= 10 X 6 = 60
The area is 60 square The area is 60 square metresmetres
- Or ROWS X COLUMNS- Or ROWS X COLUMNS
6 rows of 10 squares = 60
The area is 60 square The area is 60 square metresmetres
COUNT THE SQUARESCOUNT THE SQUARES
1, 2, 3, … 59, 601, 2, 3, … 59, 60
The area is 60 square The area is 60 square metresmetres
10 m
6 m
But which way
is best?
But which way
is best?
How do you find area?
Here are some ways you might
have met …
How do you find area?
Here are some ways you might
have met …
Area Example 1 Area Example 1
What is the area of this rectangle? …
HOW MANY SQUARES?
What is the area of this rectangle? …
HOW MANY SQUARES?
Easy! Just count the 12 squaresEasy! Just count the 12 squares
Area = 12 squares centimetresArea = 12 squares centimetres
METHOD 1: COUNT THE SQUARESMETHOD 1: COUNT THE SQUARES
USEFUL METHOD WHEN …USEFUL METHOD WHEN …
- You can see the squares - You can see the squares
ANDAND
-there’s not too many to count!there’s not too many to count!
What is the area of this rectangle? …
HOW MANY SQUARES?
What is the area of this rectangle? …
HOW MANY SQUARES?
Too many squares to count!Too many squares to count!Is there an easier way?Is there an easier way?
You can see there are 6 rows with You can see there are 6 rows with 10 in each row 10 in each row = 60 squares= 60 squares
METHOD 2: AREA = ROWS X METHOD 2: AREA = ROWS X COLUMNSCOLUMNS
USEFUL METHOD WHEN …USEFUL METHOD WHEN …
- You can see the squares - You can see the squares
BUT BUT
-there’s too many to count!there’s too many to count!
Area Example 2Area Example 2
Area Example 3 Area Example 3
What is the area of this rectangle? …
HOW MANY SQUARES?
What is the area of this rectangle? …
HOW MANY SQUARES?
No squares to countNo squares to count
BUTBUT
7cm means 7 squares fit in each row7cm means 7 squares fit in each row
5 cm means 5 squares fit in each column 5 cm means 5 squares fit in each column 22
Number of squares = length x widthNumber of squares = length x width = 7 x 5 = 35 square centimetres= 7 x 5 = 35 square centimetres
METHOD 3: AREA = LENGTH X WIDTHMETHOD 3: AREA = LENGTH X WIDTH
USEFUL METHOD WHEN …USEFUL METHOD WHEN …
- You can’t see the squares - You can’t see the squares
ANDAND
It’s very fastIt’s very fast
7 cm
5 cm
9 cm
3 cm
AREA = AREA =
LENGTH X WIDTHLENGTH X WIDTH
AREA = COUNT AREA = COUNT THE SQUARES THE SQUARES
AREA = AREA =
ROWS X COLUMNSROWS X COLUMNS
Area: Test Yourself 1Area: Test Yourself 1
Which method
best suits each
problem?
Which method
best suits each
problem?
AREA = AREA =
LENGTH X WIDTHLENGTH X WIDTH
Area: Test Yourself 1Area: Test Yourself 19 cm
3 cm
ANDwhich way works for
ALL 3?
ANDwhich way works for
ALL 3?
= 9 x 3 = 9 x 3
= 27 cm= 27 cm²²
= 4 x 2 = 4 x 2
= 8 cm= 8 cm²²
= 11 x 5 = 11 x 5
= 55 cm= 55 cm²²
LENGTH X LENGTH X WIDTHWIDTH
COUNT THE COUNT THE SQUARES SQUARES
ROWS X ROWS X COLUMNSCOLUMNS
Area: Test Yourself 2Area: Test Yourself 2
Easy to count - only a few squares
Easy to count - only a few squares
No squares.Use
length x width
No squares.Use
length x width
8 cm
5 cm
Too many to count!
But it’s easy to see there are 6
rows of 7
Too many to count!
But it’s easy to see there are 6
rows of 7
Match the method to
the problem
Match the method to
the problem
AREA = AREA =
LENGTH X WIDTHLENGTH X WIDTH
Area Test Yourself 2Area Test Yourself 2
ANDwhich way works for
ALL 3?
ANDwhich way works for
ALL 3?
8 cm
5 cm
= 7 x 5 = 7 x 5
= 35 cm= 35 cm²²
= 8 x 5 = 8 x 5
= 40 cm= 40 cm²²
= 3 x 4 = 3 x 4
= 12 cm= 12 cm²²
Area– General Rule for all Area– General Rule for all RectanglesRectangles
General Rule:General Rule:
The area of a rectangle = Length x The area of a rectangle = Length x WidthWidth
Or if you like shorthand …Or if you like shorthand …
A = L x WA = L x W
3 3 Egs Egs
AreaArea
Units of area: Units of area:
ALWAYS IN SQUARES!ALWAYS IN SQUARES!A small chess board A small chess board contains 64 centimetre contains 64 centimetre
squares.squares.
Its area is:Its area is:40 centimetre squares 40 centimetre squares 40 centimetre squared 40 centimetre squared 40 square centimetres 40 square centimetres
40 cm 40 cm ²²
The school grounds has 6 fields, each 1 kilometre square.The school grounds has 6 fields, each 1 kilometre square.
Its area is:Its area is:6 kilometre squares 6 kilometre squares 6 kilometre squared 6 kilometre squared 6 square kilometres 6 square kilometres
6 km 6 km ²²A classroom floor can A classroom floor can
fit in 20 carpet tiles, fit in 20 carpet tiles, each 1 metre square.each 1 metre square.
The floor area is:The floor area is:20 metre squares 20 metre squares 20 metre squared 20 metre squared 20 square metres 20 square metres
20 m 20 m ²²
The Perimeter of a Rectangle …The Perimeter of a Rectangle … means - the distance around the outside and is measured by - the sum of the lengths of the 4 sides (eg: millimetres, centimetres, metres, kilometres, feet, yards)
2 LENGTHS + 2 WIDTHS 2 LENGTHS + 2 WIDTHS
= 2 X 10 + 2 X 6= 2 X 10 + 2 X 6
= 20 + 12 = 32m
ADD 1 LENGTH + 1 ADD 1 LENGTH + 1 WIDTH THEN DOUBLE ITWIDTH THEN DOUBLE IT
10 + 6 = 16m10 + 6 = 16m
2 X 16 = 32m2 X 16 = 32m
ADD 4 LENGTHS IN ADD 4 LENGTHS IN ORDERORDER
10 + 6 + 10 + 6 = 32 m10 + 6 + 10 + 6 = 32 m10m
6m
Which way do you prefer?
Which way do you prefer?
There’s lots of ways to
find the perimeter…
There’s lots of ways to
find the perimeter…
10m
6m
PerimeterPerimeterUnits of perimeter: Units of perimeter:
Any units of lengthAny units of length
METRIC UNITSMETRIC UNITS
Millimetres mmMillimetres mm
Centimetres cmCentimetres cm
Kilometres kmKilometres km
IMPERIAL UNITSIMPERIAL UNITS
Miles Miles
YardsYards
FeetFeet
InchesInches
PerimeterPerimeter
3 3 Egs Egs
The school grounds has 6 fields, The school grounds has 6 fields, each 1 kilometre square.each 1 kilometre square.
The length of the perimeter fencing is:The length of the perimeter fencing is:10 kilometre10 kilometre
10 km10 km
A small chess board A small chess board contains 64 centimetre contains 64 centimetre
squares.squares.
The perimeter has a The perimeter has a brown edging:brown edging:
64 centimetres long64 centimetres long64 cm long64 cm long
A classroom floor can A classroom floor can fit in 20 carpet tiles, fit in 20 carpet tiles,
each 1 metre square.each 1 metre square.
The classroom The classroom perimeter is:perimeter is:20 metres 20 metres
20m20m
Example 1Example 1- What do I know?
STEP 1
Read it !
- What do I want to find out?
… I’ll read this again so I’m sure I
get it …
STEP 1
Read it !
STEP 2 Underline
it !
… and …LOOK FOR
KEY NUMBERS
!
Example 1Example 1
The history
classroom is 10m
long and 4m wide.
How much carpet
is needed for the
floor?
WORD CLUE! area
KEY NUMBER!
KEY NUMBER!
AREA CLUES
surface
cover
coverage
amount of carpet
how much carpet
PERIMETER CLUES
edge
edging
outside distance
outside length
perimeter fencing
total outside length
external length
… and WORD CLUES – area or
perimeter?
AREA CLUES
surface
cover
coverage
amount of carpet
how much carpet
Some word clues to watch out
for…
PERIMETER CLUES
edge
edging
outside distance
outside length
perimeter fencing
total outside length
external length
Example 1Example 1STEP 1 Read it !
STEP 2 Underline It !
STEP 3 Picture It! !
The history
classroom is 10m
long and 4m wide.
How much carpet
is needed for the
floor?
WORD CLUE! area
KEY NUMBER!
KEY NUMBER!
10m
4m
2 Steps so far …
CLICK for Step 3!
This means AREA
Example 1Example 1STEP 1 Read it !
STEP 2 Underline It !
STEP 3 Picture It! !
STEP 4 Calculate It !
Area of a rectangle = length x width
= 10 x 40
= 40
An area of 40m ²² carpet is needed.
3 steps done
1 to go …
CLICK for
Step 4!
10m
4mThe history
classroom is 10m
long and 4m wide.
How much carpet
is needed for the
floor?
The 4 StepsThe 4 Steps
STEP 1
?
STEP 2
?
STEP 3
?Read it ! Underline It !
Picture It! !STEP 4
?Calculate It !
Example 2Example 2STEP 1
Read it !
- What do I want to find out?
… I’ll read this again so I’m sure I
get it …
- What do I know?
STEP 1
Read it !
STEP 2 Underline
it !
… and …LOOK FOR
KEY NUMBERS
!
The history
classroom is 10m
long and 4m wide.
How much edging strip is
needed for the
classroom floor?
WORD CLUE! perimeter
KEY NUMBER!
KEY NUMBER!
AREA CLUES
surface
cover
coverage
amount of carpet
how much carpet
PERIMETER CLUES
edge
edging
outside distance
outside length
perimeter fencing
total outside length
external length
… and WORD
CLUES – area or
perimeter?
Example 2Example 2
STEP 1 Read it !
STEP 2 Underline It !
STEP 3 Picture It! !
2 Steps so far …
CLICK for Step 3!
Example 2Example 2
10m
4m
10m
4mThe history
classroom is 10m
long and 4m wide.
How much edging strip is
needed to go around the classroom floor?
This means PERIMETER
STEP 1 Read it !
STEP 2 Underline It !
STEP 3 Picture It! !
STEP 4 Calculate It !
Perimeter of a rectangle = sum of the lengths of the 4 sides
= 10 + 4 + 10 + 4
= 28
A 28 m length of edging strip is needed.
3 steps done
1 to go …
CLICK for
Step 4!
Example 2Example 2
10m
4m
10m
4mThe history
classroom is 10m
long and 4m wide.
How much edging strip is
needed to go around the classroom floor?
Remember – there’s lots of ways to do this!
For example: 10 + 4 + 10 + 4 = 28
OR 10 + 4 = 14 2 X 14 = 28
OR 10 X 2 = 20 and 4 X 2 = 8 20 + 8 = 28
Remember – there’s lots of ways to do this!
For example: 10 + 4 + 10 + 4 = 28
OR 10 + 4 = 14 2 X 14 = 28
OR 10 X 2 = 20 and 4 X 2 = 8 20 + 8 = 28
The 4 StepsThe 4 Steps
STEP 1
?
STEP 2
?
STEP 3
?Read it ! Underline It !
Picture It! !STEP 4
?Calculate It !
Example 3Example 3- What do I know?
STEP 1
Read it !
- What do I want to find out?
… I’ll read this again so I’m sure I
get it …
STEP 1
Read it !
STEP 2 Underline
it !
… and …LOOK FOR
KEY NUMBERS
!
Example 3Example 3
AREA CLUES
surface
cover
coverage
amount of carpet
how much carpet
PERIMETER CLUES
edge
edging
outside distance
outside length
perimeter fencing
total outside length
external length
LOOK FOR WORD
CLUES – area or
perimeter?
The history room floor
is 12m by 6m.
The project corner is a
1m by 3m rectangle.
The rest is tiled.
How much of thefloor surface is
tiled?
WORD CLUE! area
KEY NUMBER!
KEY NUMBERS!
1m
6m
3m
3m
Example 3Example 3STEP 1 Read it !
STEP 2 Underline It !
STEP 3 Picture It! !
2 Steps so far …
CLICK for Step 3!
SURFACE MEANS AREA!But the shape you’re interested in is not a rectangle!
One way is to PICTURE IT AS 2 RECTANGLES JOINED TOGETHER.
Work out each area and ADD.
The history room floor
is 12m by 6m.
The project corner is a
1m by 3m rectangle.
The rest is tiled.
How much of thefloor surface is
tiled?
1m
6m
3m
3m
The history room floor
is 12m by 6m
The project corner is a
1m by 3m rectangle.
The rest is tiled.
How much of thefloor surface is
tiled?
Example 3Example 3STEP 1 Read it !
STEP 2 Underline It !
STEP 3 Picture It! !
?m2m
?m3m
Area?Area? = 3 x 2 = 6m²
= 3 x 3 = 9m²
STEP 4 Calculate It !
3 steps done
1 to go …
CLICK for
Step 4!
Work out area of each rectangle and add!
Total Area = 6 + 9 = 15m²
The tiled area is 15m ²
Can you think of any other ways you could work this out?
The 4 StepsThe 4 Steps
STEP 1
?
STEP 2
?
STEP 3
?Read it ! Underline It !
Picture It! !STEP 4
?Calculate It !
Example 4Example 4- What do I know?
STEP 1
Read it !
- What do I want to find out?
… I’ll read this again so I’m sure I
get it …
STEP 1
Read it !
STEP 2 Underline
it !
… and …LOOK FOR
KEY NUMBERS
!
Example 4Example 4
AREA CLUES
surface
cover
coverage
amount of carpet
how much carpet
PERIMETER CLUES
edge
edging
outside distance
outside length
perimeter fencing
total outside length
external length
… and WORD
CLUES – area or
perimeter?
The history room floor
is 12m by 6m.
The project corner is a
1m by 3m rectangle.
The rest is tiled and surrounded by
wooden edging.
What length of edging is needed?
WORD CLUE! perimeter
KEY NUMBER!
KEY NUMBERS!
1m
6m
3m
3m
Example 4Example 4STEP 1 Read it !
STEP 2 Underline It !
STEP 3 Picture It! !
2 Steps so far …
CLICK for Step 3!
The history room floor
is 12m by 6m.
The carpeted area in the corner is a
1m by 3m rectangle.
The rest is tiled and surrounded by
wooden edging.
What length of edging is needed?
EDGING MEANS PERIMETERBut the shape you’re interested in is not a rectangle!
One way is to start at the top left-hand corner and write down each length around the perimeter.
Then ADD.
1m
6m
3m
3m
Example 4Example 4STEP 1 Read it !
STEP 2 Underline It !
STEP 3 Picture It! !
?m2m
?m3m
STEP 4 Calculate It !
3 steps done
1 to go …
CLICK for
Step 4!
Work out the length of each side and add!
6 + 3 + 3 + 1+ 3 + 2 = 18
18m of edging is needed.
The history room floor
is 12m by 6m.
The carpeted area in the corner is a
1m by 3m rectangle.
The rest is tiled and surrounded by
wooden edging.
What length of edging is needed?
The 4 StepsThe 4 Steps
STEP 1
?
STEP 2
?
STEP 3
?Read it ! Underline It !
Picture It! !STEP 4
?Calculate It !
Now Your Turn! 1Now Your Turn! 1
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
An area of 45m² carpet is needed
Click for
solution to
problem
6m
1.5m2m
4m
Problem 1Problem 1 The history classroom is The history classroom is 9m long and 5m wide.9m long and 5m wide.
How carpet is needed to How carpet is needed to cover the floor?cover the floor?
Now Your Turn! 2Now Your Turn! 2
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 2Problem 2 The history classroom is The history classroom is 9m long and 5m wide.9m long and 5m wide.
How edging tape is needed How edging tape is needed for the carpet perimeter?for the carpet perimeter?
A length of 28m edging strip is needed
Click for
solution to
problem
Now Your Turn! 3Now Your Turn! 3
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
An area of 90m² carpet is needed
Click for
solution to
problem
6m
1.5m2m
4m
Problem 3Problem 3
The history classroom is The history classroom is 15m long and 6m wide.15m long and 6m wide.
How carpet is needed to How carpet is needed to cover the floor?cover the floor?
Now Your Turn! 4Now Your Turn! 4
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 4Problem 4
The history classroom is The history classroom is 15m long and 6m wide.15m long and 6m wide.
How edging tape is needed How edging tape is needed for the carpet perimeter?for the carpet perimeter?
A length of 42m edging strip is needed
Click for
solution to
problem
Now Your Turn! 5Now Your Turn! 5
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 5Problem 5
The history classroom floor The history classroom floor is a 12m and 6m rectangle.is a 12m and 6m rectangle.
The resource corner is 2m The resource corner is 2m x 2m square. How much x 2m square. How much floor space is still free?floor space is still free?
An area of 68m² carpet is needed
Click for
solution to
problem
Now Your Turn! 6Now Your Turn! 6
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 6Problem 6
The history classroom floor is a The history classroom floor is a 12m by 6m rectangle.12m by 6m rectangle.
The resource corner is 2m x The resource corner is 2m x 2m square. A tiled border 2m square. A tiled border
marks the perimeter of the marks the perimeter of the remaining floor. How long is remaining floor. How long is
the border?the border?
The perimeter border is 36m long
Click for
solution to
problem
Now Your Turn! 7Now Your Turn! 7
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 7Problem 7
The history classroom floor The history classroom floor is a 15m and 7m rectangle.is a 15m and 7m rectangle.
The computer corner is The computer corner is 3m x 3m square. How 3m x 3m square. How
much floor space is left?much floor space is left?
An area of 96m² carpet is needed
Click for
solution to
problem
Now Your Turn! 8Now Your Turn! 8
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 8Problem 8
The history classroom floor is a The history classroom floor is a 15m by 7m rectangle.15m by 7m rectangle.
The computer corner is 3m x The computer corner is 3m x 3m square. A tiled border 3m square. A tiled border
marks the perimeter of the marks the perimeter of the remaining floor. How long is remaining floor. How long is
the border?the border?
The perimeter border is 44m long
Click for
solution to
problem
Now Your Turn! 9Now Your Turn! 9
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 9Problem 9How much floor space is How much floor space is there in this classroom? there in this classroom? The floor
area is 81m²
Click for
solution to
problemKEY
Door
(0.5m wide)
15m
7m 6m
11m
Now Your Turn! 10Now Your Turn! 10
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 10Problem 10What length of skirting What length of skirting
board is needed this board is needed this classroom?classroom?
(Remember to allow for the door!)(Remember to allow for the door!)
An area of 43.5m² carpet is needed
Click for
solution to
problemKEY
Door
(0.5m wide)
15m
7m 6m
11m
Now Your Turn! 11Now Your Turn! 11
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 11Problem 11How much floor space is How much floor space is there in this classroom? there in this classroom? The floor
area is 141.5m²
Click for
solution to
problemKEY
Door
(0.5m wide)
14m
10m0.5m
17m
Now Your Turn! 12Now Your Turn! 12
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 12Problem 12What length of skirting What length of skirting
board is needed this board is needed this classroom?classroom?
(Remember to allow for the door!)(Remember to allow for the door!)
53.5m of skirting board is needed.
Click for
solution to
problemKEY
Door
(0.5m wide)
14m
10m0.5m
17m
Now Your Turn! 13Now Your Turn! 13
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 13Problem 13How much floor space is How much floor space is there in this classroom? there in this classroom? The floor
area is 59m²
Click for
solution to
problemKEY
Door (1/2 m wide)
10m
7m5.5m
8m
Now Your Turn! 14Now Your Turn! 14
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 14Problem 14What length of skirting What length of skirting
board is needed this board is needed this classroom?classroom?
(Remember to allow for the door!)(Remember to allow for the door!)
33.5m of skirting board is needed.
Click for
solution to
problem4m
KEY
Door (1/2 m wide)
10m
7m5.5m
8m
Now Your Turn! 15Now Your Turn! 15
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 15Problem 15The ceiling is going to have new The ceiling is going to have new
tiles. Each tile is 1 square metre. tiles. Each tile is 1 square metre.
How many tiles are needed?How many tiles are needed? The ceiling area is 81m².
So 81 of the 1m² tiles are
needed.
Click for
solution to
problem
1.5m
10m
6m
11m
Now Your Turn! 16Now Your Turn! 16
STEP 1
?
STEP 2
?
STEP 3
?
STEP 4
?Underline It !
Picture It! ! Calculate It !
Read it !
Problem 16Problem 16
The ceiling tiles are enclosed by The ceiling tiles are enclosed by metal strip. metal strip.
How much strip is needed?How much strip is needed?45m of metal strip is
needed.
Click for
solution to
problem
1.5m
10m
6m
11m
Now U R PC with Area and Now U R PC with Area and Perimeter …Perimeter …
Are you ready to try …Are you ready to try … THE FIENDISH SPANISH CLASSROOM PROBLEMS THE FIENDISH SPANISH CLASSROOM PROBLEMS
?? - about Money with Area and Perimeter - about Money with Area and Perimeter
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