Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 361 · 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. 1.586 − 16 =
2. 2.392 − 59 =
3. 3.469 − 27 =
4. 4.298 − 29 =
5. 5.417 − 59 =
6. 6.426 − 68 =
7. 7.128 − 86 =
8. 8.490 − 37 =
9. 9.115 − 36 =
10. 10.120 − 36 =
11. 11.467 − 76 =
12. 12.433 − 16 =
13. 13.321 − 26 =
14. 14.514 − 69 =
15. 15.423 − 17 =
16. 16.496 − 19 =
17. 17.170 − 87 =
18. 18.419 − 76 =
19. 19.513 − 36 =
20. 20.139 − 88 =
21. 21.232 − 37 =
22. 22.258 − 66 =
23. 23.55 − 49 =
24. 24.159 − 86 =
25. 25.169 − 49 =
26. 26.86 − 18 =
27. 27.345 − 57 =
28. 28.519 − 86 =
29. 29.586 − 28 =
30. 30.127 − 36 =
31. 31.215 − 48 =
32. 32.560 − 77 =
33. 33.174 − 87 =
34. 34.182 − 49 =
35. 35.373 − 79 =
36. 36.308 − 96 =
37. 37.290 − 86 =
38. 38.175 − 96 =
39. 39.63 − 16 =
40. 40.372 − 76 =

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