Addition and Subtraction Decimals

Subtracting Decimals: Use the grid method to subtract 0.5 from 0.9

• 0.3

• 0.7

• 1.2

• 0.4

Does this model represent addition or subtraction?

• addition

• subtraction

Adding Decimals: Use the grid method to add 0.6 and 0.4

• 0.8

• 1.0

• 0.2

• 1.5

You bought some chips and paid with this amount. How much did the chips cost?

• $1.62

• $0.62

• $2.62

• $2.82

To ADD, move to the _________ on the horizontal number line.

• right

• left

• down

• up

3.94 - 2.6  _____

•  0.34 

•   1.34 

•  1.88 

• . 3.68

367.471 + 22.111 + 1.923=

• 391.515 

•  391.605 

• 391.505

• 391.615

Kelly has $20. She spends $2.15 on a Slurpee and $6.58 on candy. How much money does Kelly have left?

• $28.73

• $11.27

• $17.85

• $13.42

Annie buys shoes and top for $47.82 and $13.36 She gives $100. Whats her change approximately?

• $30

• $38

• $29

• $39

The Bell family traveled and drove 10.9 hours; then 8.6 hours; then 12.4 hours. What is the sum?

• 31.9 hours

• 30 hours

• 31 miles

• 31.8 hours