Math Computation Review!

Adding and Subtracting Decimals

100

Add 

4.5 + 2.3 

6.8

200

Subtract 

8.7 - 3.45

5.25

300

Add 

5.62 + 3.18

8.80

400

Multiply 

3.4 x 2

6.8

500

A student buys a drink for $2.75 and a snack for $3.60. How much did they spend in total?

$6.35

Mulitplication

100

12 x 4

48

200

23 x 3

69

300

15 x 12

180

400

24 x 14

336

500

A class has 18 students. Each student gets 12 pencils. How many pencils are needed?

216

Fractions

100

1/4 + 1/4

1/2

200

3/8 + 2/8 

5/8 

300

1/3 + 1/6

1/2

400

3/4 - 1/2 

1/4

500

3/5 + 2/3 

19/15 or 1 4/15

Algebra

100

X + 5 = 12 

x = 7

200

3x = 18

x = 6

300

2x + 4 = 10 

x = 3

400

4x - 3 = 13

x = 4

500

3x + 7 = 40 + 3

x = 12

Correct the mistake!

100

2.4 + 3.6 = 5.10

CORRECT ANSWER: 6.0

200

3/4 + 2/5 = 5/9 

CORRECT: 23/20 OR 1 3/20

300

2x +6 = 14 

x = 10

CORRECT: x= 4 

400

23 x 14 = 115

CORRECT: 322

500

1/3 + 1/4 = 2/7

CORRECT: 7/12