Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 322 · 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. 1.244 − 38 =
2. 2.230 − 69 =
3. 3.156 − 89 =
4. 4.289 − 18 =
5. 5.226 − 29 =
6. 6.391 − 59 =
7. 7.564 − 87 =
8. 8.119 − 16 =
9. 9.139 − 66 =
10. 10.545 − 18 =
11. 11.295 − 49 =
12. 12.460 − 68 =
13. 13.210 − 78 =
14. 14.394 − 88 =
15. 15.119 − 79 =
16. 16.551 − 36 =
17. 17.335 − 56 =
18. 18.511 − 97 =
19. 19.448 − 76 =
20. 20.156 − 59 =
21. 21.462 − 78 =
22. 22.436 − 16 =
23. 23.152 − 66 =
24. 24.288 − 18 =
25. 25.283 − 48 =
26. 26.592 − 46 =
27. 27.458 − 28 =
28. 28.286 − 86 =
29. 29.236 − 49 =
30. 30.282 − 49 =
31. 31.392 − 29 =
32. 32.539 − 47 =
33. 33.191 − 49 =
34. 34.124 − 88 =
35. 35.153 − 16 =
36. 36.140 − 59 =
37. 37.374 − 59 =
38. 38.277 − 17 =
39. 39.599 − 69 =
40. 40.334 − 29 =

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