Decimals
description
Transcript of Decimals
Decimals
How can your understanding of place value and fractions help
you understand decimals?
5 minutes to Drain your Brain!Write EVERYTHING you know about FRACTIONSWrite EVERYTHING you know about PLACE VALUE
Share OutFractions Place Value
Task 1- I do!Use the hundreds blocks to represent the fraction 7/10. Write it as a decimal.
1 whole 1 tenth (.1) 1 Hundredth (.01)
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
0 0 . 7 0
.7 or .70
Task 2 – I do!Use the hundreds blocks to represent the fraction 2 15/100. Write it as a decimal.
1 whole 1 tenth (.1) 1 Hundredth (.01)
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
0 2 . 0 151 5
2.15
Task 3 – We do!Use the hundreds blocks to represent the fraction 72/100. Write it as a decimal.
1 whole 1 tenth (.1) 1 Hundredth (.01)
Task 4Use the hundreds blocks to represent the fraction 6 43/100. Write it as a decimal.
Use the hundreds blocks to represent the fraction 4 3/10. Write it as a decimal.
Task 3 – Few do!
Task 5Use the hundreds blocks to represent the fraction 99/100. Write it as a decimal.
1 whole 1 tenth (.1) 1 Hundredth (.01)
Decimals
How can your understanding of place value and fractions help
you understand decimals?
Task 6 – You do!Use the information in the picture below to:1. Write a fraction2. Write a decimal
Task 7 – You do!Use the number below to:1. Write a fraction2. Draw an illustration
.5
Answers
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
637 .
Task 6
Task 7
510
361007
Drop back and puntUse you transparency to figure out the following:
15100
Write it as a decimal!
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
.
Task 1 – I do!Use you transparency to figure out the following:
70100
Write it as a decimal!How does this compare to tenths?
TENS ONES DECIMAL
POINTTENTHS HUNDREDTHS
0 . 7 0
Task 2 – I do!Use you transparency to figure out the following:
22100
Write it as a decimal!How does this compare to tenths?
TENS ONES DECIMAL
POINTTENTHS HUNDREDTHS
0 . 2 2
Task 3 – Few do!Use you transparency to figure out the following:
Write them as a decimal!How do they compare to tenths?
TENS ONES DECIMAL
POINTTENTHS HUNDREDTHS
0 . 2 2
50 100
62 100
20 100
84 100
You Do – Challenge!Show a pictorial representation of the following word problem.
To assist you, you may use: Your transparency
ManipulativesA place value chart
Norman and Dianna are so confused. They want to know how much of the banana their mother ate. Mama gave Norman seven tenths of a banana and Dianna got five tenths. Greedy mama ate the rest. How many tenths did she eat?
*hint find out how many bananas Norman and Dianna ate
Mama ate eight tenths.Norman and Dianna ate 1 2/10 bananas. That means mama had to cut 2 bananas. There were eight tenths remaining.
Decimals
How can your understanding of place value and fractions help
you when comparing decimals?
Read Think Write What does it mean to compare
in mathematics?
THINK
Write
I Do!Compare twelve hundredths to two tenths
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
. 1 2
2 0.
.12 .20<
I Do!Compare five and three tenths to five and thirty
hundredths
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
. 3 0
3 0.
5.30 5.30=
5
5
I Do!Compare six and twenty five hundredths to four and
six tenths
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
. 2 5
6 0.
6.25 4.60>
6
4
We Do!Compare fourteen hundredths to one tenth
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
. 1 4
1 0.
.14 .10>
Few Do!Task 1
Compare thirty two hundredths to fourteen tenths
.32 < 1.40
Task 2 Compare seven and four tenths to seven and forty two hundredths
7.40 < 7.42Task 3
Compare seventy hundredths to fifty two hundredths
Task 5 Compare four and seven tenths to
four and four tenths
Task 6 Compare seven and thirty four
hundredths to 7 36/100
Task 4 Compare 2/10 to .2
.70 > .52.2 = .2
4.7 > 4.4 7.34 < 7.36
You Do!
Create one decimal comparison to use for
tomorrow’s APK!
Try this on for size!
Solve the following problem using two representations.• Representation 1: Number line• Representation 2: Your choice!
Shelby was measuring the width of a paperclip and found that it was 1/2 inch. What decimal is equivalent to width of the paperclip?
Share Out
Math Stations
Basketball Dismissal Dilemma
Taxi Trouble Cell Phone Plans
Flag Fractions
Group 1 Group 2 Group 3 Group 4 Group 5
Group 5 Group 1 Group 2 Group 3 Group 4
Group 4 Group 5 Group 1 Group 2 Group 3
Group 3 Group 4 Group 5 Group 1 Group 2
Group 2 Group 3 Group 4 Group 5 Group 1