Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 924 · 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. 1.328 − 76 =
2. 2.192 − 37 =
3. 3.295 − 57 =
4. 4.241 − 87 =
5. 5.172 − 86 =
6. 6.187 − 86 =
7. 7.446 − 89 =
8. 8.466 − 46 =
9. 9.422 − 88 =
10. 10.321 − 66 =
11. 11.115 − 16 =
12. 12.267 − 86 =
13. 13.434 − 36 =
14. 14.572 − 58 =
15. 15.168 − 78 =
16. 16.334 − 38 =
17. 17.331 − 96 =
18. 18.429 − 16 =
19. 19.181 − 48 =
20. 20.483 − 46 =
21. 21.531 − 87 =
22. 22.407 − 19 =
23. 23.127 − 39 =
24. 24.429 − 68 =
25. 25.185 − 19 =
26. 26.380 − 77 =
27. 27.100 − 36 =
28. 28.172 − 39 =
29. 29.436 − 17 =
30. 30.286 − 38 =
31. 31.473 − 29 =
32. 32.262 − 66 =
33. 33.433 − 99 =
34. 34.209 − 96 =
35. 35.237 − 97 =
36. 36.171 − 19 =
37. 37.418 − 48 =
38. 38.399 − 39 =
39. 39.87 − 26 =
40. 40.52 − 16 =

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