Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 319 · 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. 1.449 − 37 =
2. 2.316 − 28 =
3. 3.198 − 27 =
4. 4.204 − 97 =
5. 5.199 − 18 =
6. 6.138 − 88 =
7. 7.417 − 29 =
8. 8.181 − 49 =
9. 9.364 − 48 =
10. 10.155 − 47 =
11. 11.132 − 29 =
12. 12.117 − 49 =
13. 13.326 − 77 =
14. 14.73 − 47 =
15. 15.324 − 97 =
16. 16.429 − 27 =
17. 17.427 − 37 =
18. 18.306 − 59 =
19. 19.226 − 49 =
20. 20.496 − 96 =
21. 21.136 − 79 =
22. 22.64 − 17 =
23. 23.151 − 17 =
24. 24.323 − 17 =
25. 25.93 − 67 =
26. 26.109 − 16 =
27. 27.164 − 56 =
28. 28.365 − 78 =
29. 29.317 − 28 =
30. 30.542 − 59 =
31. 31.163 − 86 =
32. 32.185 − 36 =
33. 33.168 − 88 =
34. 34.463 − 69 =
35. 35.211 − 49 =
36. 36.214 − 88 =
37. 37.432 − 87 =
38. 38.103 − 77 =
39. 39.228 − 26 =
40. 40.154 − 56 =

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