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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.



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.


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.


Decimals


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


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!


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


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


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


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


TENTHS HUNDREDTHS

. 1 2

2 0.

.12 .20<

I Do!Compare five and three tenths to five and thirty

hundredths


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


TENTHS HUNDREDTHS

. 2 5

6 0.

6.25 4.60>

6

4

We Do!Compare fourteen hundredths to one tenth


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?

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