Decimals Mixed Review

Decimals Mixed Review

Adding/Subtracting Decimals

• First LINE up the decimals

• Add any necessary 0s

• Be sure the decimal lines up in the answer (sum or difference)

Multiple Choice

The answer in addition is called

• product

• quotient

• difference

• sum

Multiple Choice

Practice

3.49 + 2.8 =

• 5.28

• 6.29

• 37.7

• 4.39

Multiple Choice

The answer in subtraction is called

• product

• sum

• difference

• quotient

Multiple Choice

Practice

25.00 - 7.75 =

• 17.25

• 18.50

• 19.75

• 18.75

Multiple Choice

What is the mistake in the problem?

• the decimal in the answer is in the wrong place

• the numbers added are not lined up by the decimal

• the student should not have added

Multiple Choice

Yuritza bought 9 boxes of crayons. Each box of crayons cost $1.50. What is her total for the 9 boxes of crayons?

• $9.50

• $12.75

• $13.50

• $17.25

Multiplying Decimals

• multiply the numbers WITHOUT the decimal

• multiply carefully to find the answer (product)

• PLACE THE DECIMAL in the product (depending on the spaces in both factors)

Open Ended

Where does the decimal go in the product? How do you know?

Multiple Choice

Practice

Which is the correct product?

2.345 x 9 = 21105

• 2.1105

• 211.05

• 2110.5

• 21.105

Multiple Choice

Practice

Which is the correct product?

2.612 x 3.4 =

• 904.32

• 9.0432

• 9043.2

• 90.432

Multiple Choice

Practice

Find the product

6.4 * 3.2 =

• 204.8

• 20.48

• 1.28

• 18.22

Multiple Choice

Practice

Find the product

6.253 * 4 =

• 2041.2

• 12.120

• 24.822

• 25.012