Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 403 · 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. 1.211 − 37 =
2. 2.581 − 28 =
3. 3.241 − 48 =
4. 4.266 − 39 =
5. 5.350 − 77 =
6. 6.275 − 66 =
7. 7.139 − 89 =
8. 8.522 − 69 =
9. 9.396 − 19 =
10. 10.260 − 36 =
11. 11.420 − 37 =
12. 12.80 − 79 =
13. 13.189 − 97 =
14. 14.221 − 77 =
15. 15.471 − 87 =
16. 16.141 − 17 =
17. 17.520 − 29 =
18. 18.542 − 77 =
19. 19.284 − 19 =
20. 20.512 − 88 =
21. 21.330 − 26 =
22. 22.94 − 68 =
23. 23.411 − 98 =
24. 24.239 − 86 =
25. 25.90 − 79 =
26. 26.156 − 97 =
27. 27.327 − 88 =
28. 28.400 − 87 =
29. 29.482 − 89 =
30. 30.236 − 99 =
31. 31.321 − 87 =
32. 32.457 − 38 =
33. 33.553 − 17 =
34. 34.274 − 66 =
35. 35.103 − 39 =
36. 36.211 − 56 =
37. 37.270 − 19 =
38. 38.154 − 16 =
39. 39.142 − 57 =
40. 40.466 − 37 =

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