Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 998 · 40 questions

The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.

1. 1.74 − 47 =
2. 2.424 − 99 =
3. 3.181 − 16 =
4. 4.336 − 86 =
5. 5.170 − 76 =
6. 6.527 − 87 =
7. 7.294 − 36 =
8. 8.131 − 88 =
9. 9.143 − 26 =
10. 10.311 − 39 =
11. 11.192 − 99 =
12. 12.286 − 27 =
13. 13.223 − 99 =
14. 14.512 − 47 =
15. 15.195 − 19 =
16. 16.369 − 16 =
17. 17.160 − 98 =
18. 18.282 − 78 =
19. 19.398 − 27 =
20. 20.165 − 68 =
21. 21.193 − 86 =
22. 22.279 − 37 =
23. 23.284 − 46 =
24. 24.456 − 76 =
25. 25.299 − 16 =
26. 26.274 − 18 =
27. 27.498 − 28 =
28. 28.176 − 88 =
29. 29.385 − 86 =
30. 30.304 − 18 =
31. 31.477 − 96 =
32. 32.552 − 26 =
33. 33.353 − 17 =
34. 34.300 − 76 =
35. 35.314 − 27 =
36. 36.487 − 57 =
37. 37.394 − 87 =
38. 38.221 − 78 =
39. 39.256 − 98 =
40. 40.305 − 87 =

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