Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 48 · 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. 1.121 − 67 =
2. 2.553 − 36 =
3. 3.252 − 36 =
4. 4.475 − 58 =
5. 5.492 − 88 =
6. 6.394 − 88 =
7. 7.149 − 16 =
8. 8.384 − 56 =
9. 9.155 − 59 =
10. 10.317 − 97 =
11. 11.527 − 58 =
12. 12.251 − 77 =
13. 13.230 − 76 =
14. 14.352 − 89 =
15. 15.190 − 76 =
16. 16.170 − 16 =
17. 17.228 − 28 =
18. 18.134 − 87 =
19. 19.251 − 27 =
20. 20.235 − 76 =
21. 21.133 − 28 =
22. 22.132 − 57 =
23. 23.316 − 69 =
24. 24.284 − 78 =
25. 25.392 − 26 =
26. 26.293 − 27 =
27. 27.376 − 47 =
28. 28.392 − 27 =
29. 29.121 − 56 =
30. 30.375 − 56 =
31. 31.245 − 98 =
32. 32.205 − 59 =
33. 33.484 − 78 =
34. 34.537 − 48 =
35. 35.441 − 76 =
36. 36.513 − 39 =
37. 37.346 − 39 =
38. 38.388 − 78 =
39. 39.351 − 98 =
40. 40.277 − 18 =

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