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Maths is an universal language

English 9 Public

Mental calculation

Study Slideshow

4+4

8

5

2 x 32

64

10

1 + 2 x 3

7

10

123 - 40

83

15

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9

45

25

2022 - 2022

0

10

square root 81

9

20

5 x (2 + 3)

25

20

144 / 12

12

25