Decimal Operations: Adding and Subtracting Review

What is the first step when adding or subtracting decimals?

• Round the numbers

• Line up the decimal points

• Multiply the numbers

• Convert to fractions

Tags

CCSS.5.NBT.B.7

Why is it important to add missing zeros when adding or subtracting decimals?

• To make the numbers look bigger

• To convert the numbers to whole numbers

• To ensure the decimal points are aligned

• To make the calculation easier

Tags

CCSS.5.NBT.A.2

CCSS.5.NBT.B.7

When adding decimals, what should you do if the numbers have different lengths?

• Ignore the extra digits

• Round the longer number

• Add missing zeros to the shorter number

• Convert both numbers to fractions

Tags

CCSS.5.NBT.B.7

In the example of adding decimals, what is the result of 3.87 + 1.025?

• 4.895000

• 4.895

• 4.8950

• 4.89500

Tags

CCSS.5.NBT.B.7

When multiplying decimals, what should you do at the end of the calculation?

• Line up the decimal points

• Round the result

• Count the decimal places

• Add missing zeros

Tags

CCSS.5.NBT.A.2

CCSS.5.NBT.B.7

When multiplying decimals, do you need to line up the decimal points?

• Only if the numbers are the same length

• Sometimes

• Yes

• No

Tags

CCSS.5.NBT.B.7

In the example of multiplying decimals, how many decimal places are in the final answer if the top number has one decimal place and the bottom number has one decimal place?

• One

• Two

• Three

• Four

Tags

CCSS.5.NBT.A.2

CCSS.5.NBT.B.7

What is the first step when dividing a decimal by a whole number?

• Subtract the numbers

• Multiply the numbers

• Bring up the decimal point

• Round the decimal

Tags

CCSS.5.NBT.A.2

CCSS.5.NBT.B.7

What method is used to divide a decimal by a whole number?

• Subtract-multiply-divide

• Divide-multiply-subtract-bring down-repeat

• Multiply-divide-subtract

• Add-multiply-subtract

Tags

CCSS.5.NBT.B.7

What is the final answer when dividing 14.25 by 4?

• 3.525

• 3.5125

• 3.625

• 3.5625

Tags

CCSS.5.NBT.B.7