5.3D - Multiply Decimals and Whole Numbers

Which multiplication problem is represented by the model?

KEY: 1flat=1 whole; 1 rod=1 tenth; 1 unit=1 hundredth

• 0.2 x 6.7

• 0.2 x 0.67

• 2 x 67

• 2 x 0.67

Answer explanation

6 rods = 6 tenths; 7 units=7 hundredths

Tags

CCSS.5.NBT.B.7

Which multiplication problem can be solved using the quick picture?

KEY: 1flat = 1 whole; 1 rod=1 tenth; 1 unit= 1 hundredth

• 3 x 0.35

• 3 x 0.035

• 0.3 x 0.35

• 0.3 x 3.5

Answer explanation

3 rods = 3 tenths; 5 units = 5 hundredths

Tags

CCSS.5.NBT.B.7

What multiplication expression does the model show?

KEY: 1 flat = 1 whole

• 5 x 0.12

• 0.16 x 4

• 16 x 0.5

• 5 x 0.16

Tags

CCSS.5.NBT.B.7

Which equation matches the model?

KEY: 1 flat = 1 whole

• 4 x 0.31 = 1.24

• 4 x 0.31 = 1.51

• 4 x 0.39 = 1.24

• 4 x 0.39 = 1.56

Tags

CCSS.5.NBT.B.7

Which equation matches the model?

1 flat = 1 whole

1 rod (column) = 1 tenth

1 unit square = 1 hundredth

• 5 x 0.18 = 0.9

• 5 x 0.18 = 90

• 5 x 0.18 = 9.0

• 5 x 0.18 = 0.09

Tags

CCSS.5.NBT.B.7

Which diagram represents the expression, 0.22 x 4?

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Tags

CCSS.4.NBT.B.5

Which diagram represents the expression, 3 x 1.23?

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Tags

CCSS.4.NBT.B.5