Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 931 · 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. 1.445 − 16 =
2. 2.251 − 56 =
3. 3.72 − 36 =
4. 4.506 − 47 =
5. 5.424 − 39 =
6. 6.269 − 49 =
7. 7.113 − 18 =
8. 8.203 − 47 =
9. 9.107 − 26 =
10. 10.78 − 29 =
11. 11.238 − 16 =
12. 12.267 − 68 =
13. 13.452 − 98 =
14. 14.481 − 87 =
15. 15.349 − 18 =
16. 16.306 − 47 =
17. 17.240 − 57 =
18. 18.197 − 27 =
19. 19.174 − 98 =
20. 20.366 − 36 =
21. 21.502 − 87 =
22. 22.179 − 67 =
23. 23.578 − 27 =
24. 24.213 − 77 =
25. 25.459 − 29 =
26. 26.223 − 48 =
27. 27.508 − 87 =
28. 28.143 − 39 =
29. 29.313 − 47 =
30. 30.100 − 38 =
31. 31.139 − 29 =
32. 32.152 − 39 =
33. 33.115 − 28 =
34. 34.318 − 99 =
35. 35.536 − 19 =
36. 36.343 − 89 =
37. 37.276 − 89 =
38. 38.132 − 79 =
39. 39.223 − 89 =
40. 40.52 − 49 =

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