Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 337 · 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. 1.61 − 38 =
2. 2.117 − 49 =
3. 3.109 − 27 =
4. 4.203 − 26 =
5. 5.184 − 89 =
6. 6.213 − 89 =
7. 7.128 − 86 =
8. 8.539 − 89 =
9. 9.102 − 79 =
10. 10.591 − 26 =
11. 11.387 − 69 =
12. 12.334 − 47 =
13. 13.320 − 38 =
14. 14.213 − 16 =
15. 15.277 − 58 =
16. 16.559 − 77 =
17. 17.388 − 18 =
18. 18.160 − 39 =
19. 19.415 − 38 =
20. 20.480 − 46 =
21. 21.260 − 66 =
22. 22.373 − 77 =
23. 23.151 − 26 =
24. 24.523 − 16 =
25. 25.437 − 96 =
26. 26.545 − 49 =
27. 27.562 − 66 =
28. 28.282 − 88 =
29. 29.228 − 78 =
30. 30.423 − 98 =
31. 31.336 − 18 =
32. 32.173 − 76 =
33. 33.164 − 76 =
34. 34.356 − 69 =
35. 35.198 − 17 =
36. 36.76 − 18 =
37. 37.106 − 99 =
38. 38.573 − 88 =
39. 39.555 − 66 =
40. 40.310 − 97 =

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