Decimals
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Transcript of Decimals
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Decimals
How can your understanding of place value and fractions help
you understand decimals?
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5 minutes to Drain your Brain!Write EVERYTHING you know about FRACTIONSWrite EVERYTHING you know about PLACE VALUE
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Share OutFractions Place Value
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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
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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
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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)
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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)
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Decimals
How can your understanding of place value and fractions help
you understand decimals?
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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
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Answers
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
637 .
Task 6
Task 7
510
361007
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Drop back and puntUse you transparency to figure out the following:
15100
Write it as a decimal!
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
.
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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
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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
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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
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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.
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Decimals
How can your understanding of place value and fractions help
you when comparing decimals?
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Read Think Write What does it mean to compare
in mathematics?
THINK
Write
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I Do!Compare twelve hundredths to two tenths
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
. 1 2
2 0.
.12 .20<
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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
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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
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We Do!Compare fourteen hundredths to one tenth
TENS ONES DECIMALPOINT
TENTHS HUNDREDTHS
. 1 4
1 0.
.14 .10>
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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
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You Do!
Create one decimal comparison to use for
tomorrow’s APK!
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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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Share Out
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Math Stations
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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