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Addition
Subtraction
Multiplication
Division
Algebra
100

10 + 10

20

100

100 - 50

50

100

7 x 7 

49

100

6/2

3

100

4a + 4 = 36

a=8

200

150 + 150

300

200

456 - 65

391

200

16 x 5

80

200

300/15

20

200

6a = 66

a = 11

300

1000 + 2000

3000

300

550 - 436 

114

300

50 x 7

350

300

400/10

40

300

9a = 72

a = 8

400

700 + 750

1,450

400

1,000 - 575 

425

400

20x 10 

200

400

900/30

30

400

4b + 3 = 43

b = 10

500

500 + 750 

1,250

500

600 - 385

215

500

500 x 4

2,000

500

1000/20

50

500

7x + 4 = 67

a = 9