Mastering Decimal Multiplication with Area Models

What is the first step in using an area model to multiply decimals?

• Add the decimals together

• Ignore the decimals and treat the numbers as whole numbers

• Divide the numbers by 10

• Convert the decimals to fractions

Tags

CCSS.5.NBT.B.7

When setting up the area model, what should you do with the decimals?

• Convert them to fractions

• Ignore them

• Move them to the left

• Round them to the nearest whole number

Tags

CCSS.4.NBT.B.5

In the area model, what does the number 415 represent?

• 0.415

• 4.15

• 41.5

• 415

Tags

CCSS.4.NBT.B.5

What is the partial product of 3 times 5 in the area model?

• 15

• 150

• 0.15

• 1.5

Tags

CCSS.4.NBT.B.5

How many decimal places should the final answer have?

• Two

• One

• Three

• Four

Tags

CCSS.5.NBT.B.7

What is the sum of the partial products 14800, 370, and 185?

• 15355

• 15355.5

• 15355.55

• 15355.555

Tags

CCSS.5.NBT.B.5

What is the final answer when multiplying 3.7 and 4.15 using the area model?

• 15.355555

• 15.35555

• 15.3555

• 15.355

Tags

CCSS.6.NS.B.3

What is the first step in verifying the result using traditional multiplication?

• Convert the numbers to fractions

• Add the numbers

• Multiply the numbers as whole numbers

• Subtract the numbers

Tags

CCSS.7.NS.A.2A

What is the product of 7 times 5 in the traditional multiplication method?

• 30

• 35

• 40

• 45

Tags

CCSS.4.NBT.B.5

How many decimal places should the final answer have in the traditional method?

• Three

• Four

• One

• Two

Tags

CCSS.5.NBT.B.7