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Money Math
What's the Operation?
Think Like the Test
100

Find the sum:
2.45 + 1.30

3.75

100

Find the difference:
0.84 − 0.31

0.53

100

A notebook costs $2.35 and a pen costs $1.40. How much do they cost altogether?

$3.75

100

Ava walked 1.6 miles Monday and 2.3 miles Tuesday. What operation should you use to find how far she walked altogether?

Addition

100

A store sells these items:

Pencil — $0.75
Eraser — $0.45
Notebook — $2.20
Folder — $1.35

What is the total cost of a notebook and folder?

$3.55

200

Find the sum:
4.67 + 2.8

7.47

200

Find the difference:
7.5 − 2.36

5.14

200

Mia buys a snack for $2.75 and gives the cashier $5.00. How much change should she receive?

$2.25

200

One package weighs 8.45 pounds and another weighs 5.20 pounds. What operation should you use to find the difference in their weights?

Subtraction
200

Using the same prices, how much more does the notebook cost than the eraser? 

Pencil — $0.75
Eraser — $0.45
Notebook — $2.20
Folder — $1.35


$1.75

300

Find the sum:
6.39 + 3.54

9.93


300

Find the difference:
14.02 − 5.7

8.32

300

A book costs $7.89 and a game costs $12.45. What is the total cost?

$20.34

300

Which expression finds the difference between 7.5 and 3.24?
A. 7.5 + 3.24
B. 7.5 − 3.24
C. 3.24 − 7.5
D. 7.5 × 3.24

B. 7.5 − 3.24

300

Which pair has a sum closest to 10?

A. 2.15 + 3.25
B. 4.72 + 5.19
C. 6.84 + 5.73
D. 1.46 + 4.20

B (9.91)

400

Find the sum:
12.75 + 4.86

17.61

400

Find the difference:
52.40 − 18.76

33.64

400

Noah has $30.00. He buys a shirt for $18.67. How much money does he have left?

$11.33

400

Jack and Drew went the movies to see the new Spider Man movie. Two movie tickets cost $6.75 each. You pay with $20. Which expression finds your change?
A. 20 − (6.75 + 6.75)
B. 20 + (6.75 + 6.75)
C. 6.75 + 6.75 + 20
D. 20 − 6.75

A. 20 − (6.75 + 6.75)

400

Emilee has 1.35 L of water. Ben has 0.85 L. Together, how much more water do they have than Axel, who has 1.75 L?

0.45 L

500

Find the sum:
8.47 + 6.9 + 2.35

17.72

500

Find the difference:
100 − 36.58

63.42

500

Layla has $25.00. She buys a water bottle for $8.75 and a lunch box for $11.49. How much money does she have left?

$4.76

500

Eli ran 2.75 miles Monday and 3.4 miles Tuesday. His goal was 7 miles. Which expression finds how many more miles he needs to run?

7 − (2.75 + 3.4) 

7-6.15

500

Hudson has $50 to spend.

Backpack — $24.75

Water Bottle — $8.95

Notebook Set — $12.60

Pencil Case — $6.85

Can Hudson buy the backpack, water bottle, and notebook set without going over $50? How much money would be left?

Yes; $3.70 left.