Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 384 · 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. 1.79 − 27 =
2. 2.166 − 78 =
3. 3.535 − 26 =
4. 4.146 − 36 =
5. 5.295 − 19 =
6. 6.52 − 36 =
7. 7.403 − 19 =
8. 8.228 − 78 =
9. 9.182 − 29 =
10. 10.479 − 78 =
11. 11.236 − 19 =
12. 12.459 − 59 =
13. 13.571 − 19 =
14. 14.537 − 87 =
15. 15.427 − 58 =
16. 16.559 − 56 =
17. 17.243 − 49 =
18. 18.351 − 58 =
19. 19.484 − 18 =
20. 20.502 − 96 =
21. 21.200 − 48 =
22. 22.207 − 79 =
23. 23.293 − 38 =
24. 24.83 − 37 =
25. 25.164 − 39 =
26. 26.62 − 39 =
27. 27.165 − 69 =
28. 28.517 − 78 =
29. 29.122 − 48 =
30. 30.221 − 36 =
31. 31.316 − 66 =
32. 32.138 − 26 =
33. 33.249 − 79 =
34. 34.271 − 26 =
35. 35.228 − 17 =
36. 36.583 − 38 =
37. 37.253 − 59 =
38. 38.319 − 99 =
39. 39.522 − 86 =
40. 40.108 − 97 =

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