Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 853 · 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. 1.128 − 26 =
2. 2.169 − 18 =
3. 3.281 − 78 =
4. 4.263 − 97 =
5. 5.131 − 56 =
6. 6.466 − 39 =
7. 7.310 − 29 =
8. 8.408 − 97 =
9. 9.522 − 18 =
10. 10.457 − 28 =
11. 11.242 − 36 =
12. 12.583 − 37 =
13. 13.374 − 29 =
14. 14.262 − 46 =
15. 15.146 − 17 =
16. 16.91 − 28 =
17. 17.525 − 98 =
18. 18.157 − 86 =
19. 19.401 − 36 =
20. 20.452 − 66 =
21. 21.283 − 77 =
22. 22.529 − 56 =
23. 23.193 − 89 =
24. 24.378 − 26 =
25. 25.333 − 46 =
26. 26.577 − 38 =
27. 27.189 − 58 =
28. 28.350 − 76 =
29. 29.245 − 37 =
30. 30.553 − 36 =
31. 31.414 − 68 =
32. 32.180 − 36 =
33. 33.243 − 97 =
34. 34.423 − 97 =
35. 35.262 − 98 =
36. 36.262 − 46 =
37. 37.254 − 79 =
38. 38.509 − 59 =
39. 39.120 − 66 =
40. 40.278 − 17 =

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