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G2A Lesson 6 Number Pairs (20/30)

English 11 Public

Math!

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20 + ??? = 30

10

10

??? + 28 = 30

2

10

20 - ??? = 12

8

15

12 + ??? = 30

18

20

??? + 14 = 20

6

15

19 + 11 = ???

30

15

30 - 15 = ???

15

10

330 - 115 = ???

215

25

1015 - 715 = ???

300

25

760 - 230 = ???

530

25

30 - ??? = 21

9

15