Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 597 · 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. 1.288 − 97 =
2. 2.161 − 67 =
3. 3.358 − 17 =
4. 4.237 − 38 =
5. 5.90 − 58 =
6. 6.153 − 96 =
7. 7.487 − 18 =
8. 8.342 − 59 =
9. 9.150 − 17 =
10. 10.461 − 47 =
11. 11.321 − 67 =
12. 12.247 − 87 =
13. 13.194 − 16 =
14. 14.460 − 97 =
15. 15.158 − 37 =
16. 16.234 − 77 =
17. 17.417 − 79 =
18. 18.435 − 66 =
19. 19.273 − 29 =
20. 20.209 − 67 =
21. 21.415 − 86 =
22. 22.345 − 18 =
23. 23.155 − 49 =
24. 24.389 − 26 =
25. 25.338 − 19 =
26. 26.485 − 97 =
27. 27.497 − 27 =
28. 28.271 − 69 =
29. 29.553 − 57 =
30. 30.193 − 88 =
31. 31.160 − 89 =
32. 32.542 − 58 =
33. 33.273 − 89 =
34. 34.148 − 38 =
35. 35.372 − 18 =
36. 36.77 − 46 =
37. 37.548 − 67 =
38. 38.152 − 79 =
39. 39.157 − 26 =
40. 40.210 − 19 =

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