Show:
Addition
Subtraction
Multiplication
Division
Mystery
100

563 + 24 

587

100

78 - 42

36

100

6 x 7 x 10

420

100

9 / 3

3

100

5 + (4 -1) + 10

18

200

9 + 4 + 5+ 2 + 7

27

200

64 - 28

36

200

35 x 4 

140

200

81 / 9

9

200

6/9 - 2/9

4/9

300

858 + 463

1,321

300

572 - 85

487

300

286 x 9

2,574

300

25 / 3

8 r 1

300

a + 29 = 40

a = 11

400

14,658 + 9,831

24,489

400

277 - 184

93

400

31 x 15

465

400

246 / 2

123

400

1/2 + 3/4 

5/4 or 1 1/4

500

34 + 572 + 8 + 7,037 + 38 + 68,037

75,726

500

406 - 58

348

500

49 x 36

1,764

500

754 / 4

188 r 2

500

4 + 7 x 3 - 5

20