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Number Rack Madness!

English 16 Public

Using a number rack to add doubles +1 +2

Study Slideshow

6+___=10

4

15

7+___=10

3

15

9+___=10

1

20

7 + ____ = 10

3

10

5+___=10

5

25

225 + 115 =

340

20

7+7=

14

20

35 + 25 =

60

20

17 + _____ = 20

3

15

6+6=

12

25

80+10=

90

15

70+20=

90

20

50+5=

55

15

40+20=

60

20

62+20

82

20

15 + ____ = 20

5

20