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Math

English 20 Public

Mental math

Study Slideshow

1/3 + 1/6

3/6

15

20x20

400

15

9x9+10

91

15

2x2+8x12

144

15

6x5/6+12

17

15

4x4+5-2+3

22

15

7x7-20+10

39

15

6x8+10x2

68

15

242/2

121

15

13x13

169

15

19x19

361

15

11x11

121

15

15x15

225

15

16x16

256

15

17x17

289

15

30x30-20

880

15

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