Addition
Subtraction
Multiplication
Division
Challenge Problems
10

23+8=___?

31

10

39-7=___?

32

10

2x8=___?

16

10

4/1=___?

4

10

848+367=___?

1,215

20

34+42=___?

76

20

68-32=___?

36

20

10x6=___?

60

20

10/5=___?

2

20

1523-458=___?

1,065

30

412+22=___?

434

30

547-24=___?

523

30

12x7=___?

84

30

24/4=___?

6

30

15x5=___?

75

40

239+67=___?

306

40

632-76=___?

556

40

11x11=___?

121

40

36/6=___?

6

40

72/8=___?

9

50

346+155=___?

501

50

912-367=___?

545

50

15x3=___?

45

50

56/7=___?

8

50

(3x4)+(2x6)=___?

24