Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 770 · 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. 1.321 − 87 =
2. 2.264 − 78 =
3. 3.306 − 19 =
4. 4.247 − 97 =
5. 5.378 − 98 =
6. 6.433 − 37 =
7. 7.503 − 47 =
8. 8.523 − 38 =
9. 9.167 − 79 =
10. 10.144 − 36 =
11. 11.371 − 67 =
12. 12.269 − 56 =
13. 13.529 − 59 =
14. 14.136 − 16 =
15. 15.491 − 56 =
16. 16.538 − 46 =
17. 17.470 − 56 =
18. 18.542 − 19 =
19. 19.186 − 78 =
20. 20.279 − 17 =
21. 21.136 − 56 =
22. 22.78 − 28 =
23. 23.350 − 26 =
24. 24.418 − 78 =
25. 25.349 − 56 =
26. 26.276 − 67 =
27. 27.442 − 88 =
28. 28.321 − 29 =
29. 29.323 − 56 =
30. 30.420 − 37 =
31. 31.306 − 47 =
32. 32.123 − 28 =
33. 33.169 − 69 =
34. 34.78 − 49 =
35. 35.386 − 36 =
36. 36.165 − 77 =
37. 37.103 − 86 =
38. 38.196 − 96 =
39. 39.490 − 77 =
40. 40.392 − 36 =

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