Multiplying Decimals and Whole Numbers with Models

Marisela used this model to represent 1 whole.

Which model represents 1.8 × 4 ?

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Tags

CCSS.4.NBT.B.5

The hundredths model in the figure is shaded to represent the multiplying of two numbers.

• 80 x 40 = 3,200

• 0.08 x 0.04 = 0.32

• 0.80 x 0.40 = 0.32

• 0.08 x 0.04 = 0.032

Tags

CCSS.5.NBT.B.7

What is the product?

• 0.30

• 0.20

• 20

• 0.33

Tags

CCSS.4.NF.C.6

Which equation does this model represent?

• 0.80 x 0.33 = 0.24

• 0.8 x 0.24 = 0.3

• 0.3 x 0.8 = 0.24

• 0.24 x 0.3 = 0.8

Tags

CCSS.5.NBT.B.7

Tags

CCSS.6.NS.B.3

Which equation matches the model?

• 0.4 x 0.3 = 0.12

• 12 x 0.3 = 3.6

• 3 x 4 = 12

• 3 x .12 = 0.36

Tags

CCSS.5.NBT.B.7

Which equation matches the model?

• 2 x 0.3 = 0.6

• 3 x 0.2 = 0.6

• 2 x 3 = 0.6

• 3 x 2 = 6

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

How many groups are in this model? 

• 1

• 2

• 3

• 4

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the equation for this model?

• 17 x 3 = 51

• 0.17 x 0.3 = 0.051

• 0.17 x 3 = 0.51

• 17 x 0.3 = 0.51

Tags

CCSS.5.NBT.B.7

Place the Decimal point in the product
5 x 3.4

• .17

• .17

• 1.7

• 170

Tags

CCSS.6.NS.B.3