Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 617 · 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. 1.242 − 88 =
2. 2.178 − 29 =
3. 3.597 − 69 =
4. 4.148 − 37 =
5. 5.556 − 66 =
6. 6.231 − 38 =
7. 7.318 − 58 =
8. 8.269 − 89 =
9. 9.399 − 28 =
10. 10.142 − 57 =
11. 11.304 − 39 =
12. 12.168 − 19 =
13. 13.152 − 36 =
14. 14.519 − 99 =
15. 15.330 − 97 =
16. 16.517 − 37 =
17. 17.503 − 28 =
18. 18.385 − 77 =
19. 19.452 − 48 =
20. 20.122 − 97 =
21. 21.599 − 98 =
22. 22.166 − 19 =
23. 23.593 − 19 =
24. 24.340 − 77 =
25. 25.140 − 37 =
26. 26.367 − 29 =
27. 27.422 − 39 =
28. 28.219 − 36 =
29. 29.417 − 67 =
30. 30.498 − 38 =
31. 31.152 − 19 =
32. 32.252 − 96 =
33. 33.134 − 87 =
34. 34.116 − 56 =
35. 35.98 − 36 =
36. 36.89 − 66 =
37. 37.361 − 37 =
38. 38.285 − 79 =
39. 39.236 − 37 =
40. 40.490 − 16 =

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