| 1 | + 8 = 36 | 2 | + 10 = 24 | 3 | 74 + = 82 | 4 | 80 - = 48 | ||||
| 5 | + 4 = 52 | 6 | + 25 = 50 | 7 | 87 - = 73 | 8 | + 1 = 77 | ||||
| 9 | 39 - = 22 | 10 | 81 - = 24 | 11 | 89 - = 55 | 12 | + 42 = 55 | ||||
| 13 | 38 - = 11 | 14 | 86 - = 23 | 15 | + 13 = 99 | 16 | 71 - = 17 | ||||
| 17 | + 25 = 91 | 18 | 98 - = 40 | 19 | 72 - = 50 | 20 | 78 + = 98 | ||||
Mathetic Practice
G1_4: Fill in the blanks with add&subt within 100
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