Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 612 · 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. 1.422 − 26 =
2. 2.406 − 47 =
3. 3.591 − 98 =
4. 4.109 − 36 =
5. 5.149 − 18 =
6. 6.523 − 46 =
7. 7.346 − 26 =
8. 8.572 − 56 =
9. 9.528 − 58 =
10. 10.525 − 88 =
11. 11.508 − 99 =
12. 12.152 − 58 =
13. 13.238 − 86 =
14. 14.215 − 17 =
15. 15.434 − 68 =
16. 16.160 − 38 =
17. 17.185 − 28 =
18. 18.327 − 58 =
19. 19.67 − 27 =
20. 20.237 − 27 =
21. 21.187 − 88 =
22. 22.511 − 29 =
23. 23.254 − 96 =
24. 24.583 − 67 =
25. 25.296 − 18 =
26. 26.125 − 67 =
27. 27.416 − 99 =
28. 28.84 − 68 =
29. 29.401 − 79 =
30. 30.162 − 97 =
31. 31.120 − 46 =
32. 32.142 − 17 =
33. 33.174 − 98 =
34. 34.372 − 28 =
35. 35.364 − 28 =
36. 36.507 − 17 =
37. 37.412 − 78 =
38. 38.444 − 69 =
39. 39.248 − 57 =
40. 40.552 − 16 =

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