Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 120 · 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. 1.334 − 38 =
2. 2.397 − 69 =
3. 3.162 − 86 =
4. 4.170 − 77 =
5. 5.389 − 16 =
6. 6.294 − 38 =
7. 7.212 − 17 =
8. 8.153 − 89 =
9. 9.136 − 88 =
10. 10.227 − 49 =
11. 11.483 − 38 =
12. 12.564 − 56 =
13. 13.551 − 17 =
14. 14.99 − 58 =
15. 15.270 − 36 =
16. 16.118 − 19 =
17. 17.316 − 36 =
18. 18.395 − 88 =
19. 19.252 − 39 =
20. 20.460 − 37 =
21. 21.112 − 89 =
22. 22.161 − 37 =
23. 23.578 − 67 =
24. 24.295 − 78 =
25. 25.421 − 96 =
26. 26.206 − 68 =
27. 27.489 − 68 =
28. 28.531 − 99 =
29. 29.459 − 88 =
30. 30.201 − 87 =
31. 31.196 − 96 =
32. 32.425 − 56 =
33. 33.173 − 78 =
34. 34.122 − 58 =
35. 35.364 − 86 =
36. 36.293 − 57 =
37. 37.178 − 58 =
38. 38.168 − 88 =
39. 39.463 − 86 =
40. 40.185 − 67 =

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