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Module 2 Lesson 10
Multiply decimal fractions with tenths by multi-digit whole numbers using place value
understanding to record partial products.
• 5.NBT.7 Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
Common CoreStandards
Learning Targets
•I can multiply decimal fractions with tenths by multi-digit whole numbers using place value understanding to record partial products.
Activate Knowledge
3 × 2 is?
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3 × 2 x 10 ÷ 10 is?
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5 × 0.3 is?
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5 × 0.3 x 10 ÷ 10 is?
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3 × 2.5 is?
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3 × 2.5 x 10 ÷ 10 is?
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2 × 3.4 is?
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2 × 3.4 x 10 ÷ 10 is?
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Why are the products the same when we multiply by 10 and then divide by 10?
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Write the word name
7.463
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Represent this number in a two-part number bond with ones as one part and thousandths as the other part
7.463
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Represent it again with tenths and thousandths.
7.463
Activate Knowledge
Represent it again with hundredths and thousandths.
7.463
Activate Knowledge
Write the word name
8.972
Activate Knowledge
Represent this number in a two-part number bond with ones as one part and thousandths as the other part
8.972
Activate Knowledge
Represent it again with tenths and thousandths.
8.972
Activate Knowledge
Represent it again with hundredths and thousandths.
8.972
Activate Knowledge
Write the word name
6.849
Activate Knowledge
Represent this number in a two-part number bond with ones as one part and thousandths as the other part
6.849
Activate Knowledge
Represent it again with tenths and thousandths.
6.849
Activate Knowledge
Represent it again with hundredths and thousandths.
6.849
Activate Knowledge
The fifth-grade craft club is making aprons to sell.
Each apron takes 1.25 yards of fabric that costs $3
per yard and 4.5 yards of trim that costs $2 per
yard. What does it cost the club to make one apron?
If the club wants to make $1.75 profit on each
apron, how much should they charge per apron?
Learn
Problem 1
43 × 2.4
Round the factors to estimate the product.
Learn
Problem 1
43 × 2.4
Predict whether our estimate is greater than or less than the actual product.
Learn
Problem 1
43 × 2.4
There are 43 units of 2.4. How many tenths is 2.4?
Learn
Problem 1
43 × 24 tenths
Solve using the standard algorithm
Learn
Problem 1
2.4×43
x 10 24×43
72960
1032÷ 10
103.2
Tenths
Learn
Problem 1
3.5 × 42
Round the factors to estimate the product.
Learn
Problem 1
3.5 × 42
Predict whether our estimate is greater than or less than the actual product.
Learn
Problem 1
3.5 × 42
There are 43 units of 2.4. How many tenths is 2.4?
Learn
Problem 1
35 tenths x 42
Solve using the standard algorithm
Learn
Problem 1
15.6 × 73
Round the factors to estimate the product.
Learn
Problem 1
15.6 × 73
Predict whether our estimate is greater than or less than the actual product.
Learn
Problem 1
15.6 × 73
There are 43 units of 2.4. How many tenths is 2.4?
Learn
Problem 1
156 tenths x 73
Solve using the standard algorithm
Practice
Review