Adding and Subtracting Decimals

Adding Decimals / Fractions

100

-1.6 + 8.13

A.  6.53             B. -6.53

C. 9.73               D. -9.73

A. 6.53

200

-1/4 + 2/5

A.  1/20             B. 1/9

C. -1/9               D. 3/20

D. 3/20

300

A fish starts at 19.22 feet below sea level. The fish swims up 2.5 feet. Which expression could be used to find the fish's final position relative to sea level?

A.  19.22 + 2.5               B. -19.22 - 2.5

C. -19.22 + 2.5              D. -19.22 + (-2.5)

C. -19.22 + 2.5

400

-3.81 + (-0.7)

A.  -4.51             B. -3.11

C. -3.88              D. 3.88

A. -4.51

500

Find the sum:

-2/3 + -2/9

-8/9

Subtracting Decimals/Fractions

100

-2/7 - 3/7

A. -1/7         B. -5/7

C. -6/7         D. 1/7

B. -5/7

200

-4.08 - (-13.5)

A. -5.43         B. 9.42

C. -17.58       D. 5.43

B. 9.42

300

Philip starts with $150.99 in his bank account. He then writes a check for $427. Which expression describes Philip's new bank account balance?

A.  -427-150.99              B. -150.99 - 427

C. 150.99 + 427              D. 150.99 - 427

D. 150.99 - 427

400

-33.3 - (-2.03)

A.  -35.33             B. -31.27

C. -31.33              D. -35.27

B. -31.27

500

Find the difference:

-2/3 - ( -2/5)

-4/15

Mystery

100

What should you use KEEP, ADD, OPPOSITE?

A. When multiplying.           B. When adding.

C. When subtracting.           D. When dividing.

C. When subtracting.

200

When should you do KEEP, CHANGE, FLIP?

A. Subtracting decimals

B. Dividing fractions

C. Multiplying integers

B. Dividing fractions

300

How would 8 * 8 * 8 * 8 * 8 be written with an exponent?

8⁵

400

Sadie starts in $18.50 of debt and then earns $52. How much money does she have now? 

Include a unit of measurement on your answer (inches, cups, $, hours, etc.)

$33.50

500

Simplify this expression using order of operations:

1+3(-12 + 6) 

-17

Multiplying Decimals/Fractions

100

-3/5 * -1/9

A. 1/15         B. -3/45

C. 4/14         D. -1/4

A. 1/15

200

Addie buys 1.55 pounds of candy. Each pound is $3. How much would Addie have to pay for the candy?

$4.65

300

What is the value of -0.9 * -1.3 ?

A. 17.1         B. -177

C. -17.1        D. 1.17

D. 1.17

400

Meadow buys 10.8 pounds of grapes. Each pound of grapes costs $0.75. How much does Meadow spend on grapes?

$8.10

500

Find the product:

-0.14 * 1.02

-0.1428

Dividing Decimals/Fractions

100

2/7 divided by -1/3

A. -1/28         B. -2/15

C. -6/7           D. 4/1

C. -6/7

200

A pizza has an area of 28.6 in². It is cut into 8 equally sized slices. What would be the area of 1 slice of pizza?

3.575 in²

300

A string is 16.5 feet long. The string is then cut into pieces that are 0.5 feet long. Which expression would tell you how many pieces there are?

A. -16.5 / 0.5         B. 0.5 / 16.5

C. 16.5 / 0.5           D. -0.5 / -16.5

C. 16.5 / 0.5

400

Simplify:

 1.05 / 0.5 

2.1

500

Find the quotient:

-11.8 / 0.4

29.5