Decimal Review: Adding, Subtracting, & Multiplying

Vocabulary

100

What is the definition of "Sum" 

The result or answer after adding two or more numbers together 

200

What is the definition of "Rounding"

Replacing a number with an approximate value that is close to the original number

300

What is the definition of "Decimal"

Representing a number that is not a whole number

400

What is the definition of "Difference"

The result of subtracting one number from another

500

What is the definition of "Estimation"

A value close enough to the correct value

Adding Decimals

100

Add

3.5+5

8.5

200

Add

9.9+0.1

10

300

Add

23.1+6.6

29.7

400

Add

56.07+2.09

58.16

500

Round to the nearest whole number

$23.50+$45.76

$70

Subtracting Decimals

100

Subtract

7.2-3

4.2

200

Subtract

8.6-2.1

6.5

300

Subtract

10-0.1

9.9

400

Subtract

77.02-7.02

70

500

Round to the nearest whole number

$8.04-$4.99

$3

Multiplying Decimals

100

Multiply

8 X 3.15

25.2

200

Multiply

4.6 X 3

13.8

300

Multiply

0.3 X 1.6

0.48

400

Multiply

12.4 X 6

74.4

500

Multiply

$25.05 X 2

$50.10

Wild Card

100

Add

0.45+2.7

3.15

200

Add

20.9+3.98

24.88

300

Subtract

$22.13-$13.40

$8.73

400

Multiply

5.75 X 5

28.75

500

Multiply

3.9 X 3.3

12.87