Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 419 · 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. 1.216 − 19 =
2. 2.364 − 66 =
3. 3.168 − 37 =
4. 4.341 − 59 =
5. 5.92 − 17 =
6. 6.408 − 66 =
7. 7.408 − 19 =
8. 8.154 − 77 =
9. 9.436 − 96 =
10. 10.114 − 16 =
11. 11.569 − 79 =
12. 12.173 − 89 =
13. 13.150 − 16 =
14. 14.463 − 28 =
15. 15.527 − 68 =
16. 16.559 − 79 =
17. 17.387 − 69 =
18. 18.558 − 16 =
19. 19.237 − 36 =
20. 20.284 − 49 =
21. 21.115 − 18 =
22. 22.239 − 76 =
23. 23.198 − 86 =
24. 24.219 − 56 =
25. 25.283 − 39 =
26. 26.277 − 37 =
27. 27.550 − 46 =
28. 28.276 − 16 =
29. 29.375 − 36 =
30. 30.315 − 26 =
31. 31.79 − 36 =
32. 32.323 − 18 =
33. 33.135 − 16 =
34. 34.164 − 96 =
35. 35.561 − 48 =
36. 36.386 − 89 =
37. 37.284 − 89 =
38. 38.374 − 59 =
39. 39.164 − 66 =
40. 40.471 − 18 =

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