Per 1

(+)Addition

5

MENTAL MATH

23 +29 = 

52

10

MENTAL MATH

44 +57 =  

101

15

MENTAL MATH

126 +192 = 

318

20

MENTAL MATH

327 + 314 = 

641

25

MENTAL MATH

670 + 445 =

1115

30

MENTAL MATH

5125 + 385 =

5510

(-)Subtraction

5

MENTAL MATH

70 - 37 =

33

10

MENTAL MATH

129 - 11 =

118

15

MENTAL MATH

278 -119 = 

159

20

MENTAL MATH

345 - 157 = 

188

25

MENTAL MATH

887 -139  =

748

30

MENTAL MATH

965 - 498 =

467

(X)Multiplication

5

3x3

9

10

7x2

14

15

MENTAL MATH

8 X 7 = 

56

20

MENTAL MATH

3X 9 =

27

25

MENTAL MATH

5

6 X  7 = 

42

30

MENTAL MATH 

9X 9=

81

(/)Division

5

MENTAL MATH

9 / 3 = 

3

10

MENTAL MATH

24 / 6 =

4

15

MENTAL MATH

42 / 6 =

7

20

MENTAL MATH

56 / 8 =

7

25

MENTAL MATH

72 / 9 =

8

30

MENTAL MATH

81 / 9 =

9