| 1 | 946 - = 471-199 | 2 | + 183 = 518 + 402 | 3 | 464 - 180 = 341 - | 4 | 493 + 130 = 807 - | ||||
| 5 | 914 - = 379-4 | 6 | 982 - = 877-178 | 7 | 400 + 157 = 350 + | 8 | 870 - 245 = 128 + | ||||
| 9 | 309 - = 895-709 | 10 | 722 - 566 = 688 - | 11 | 78 - 67 = 676 - | 12 | 556 - = 186 + 306 | ||||
| 13 | + 38 = 646 + 337 | 14 | 639 + 16 = 659 - | 15 | + 465 = 758 + 200 | 16 | 640 + 48 = 265 + | ||||
| 17 | 914 + 83 = 163 + | 18 | 406 - = 50-37 | 19 | 173 + 824 = 677 + | 20 | 985 - 252 = 121 + | ||||
Mathetic Practice
G2_7: Fill in with operations of add&subt within 1000
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