Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 530 · 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. 1.173 − 38 =
2. 2.473 − 59 =
3. 3.287 − 57 =
4. 4.158 − 17 =
5. 5.160 − 97 =
6. 6.278 − 87 =
7. 7.507 − 76 =
8. 8.397 − 18 =
9. 9.557 − 38 =
10. 10.110 − 36 =
11. 11.117 − 59 =
12. 12.236 − 16 =
13. 13.445 − 29 =
14. 14.188 − 66 =
15. 15.562 − 57 =
16. 16.336 − 77 =
17. 17.435 − 96 =
18. 18.245 − 68 =
19. 19.509 − 69 =
20. 20.323 − 56 =
21. 21.537 − 86 =
22. 22.163 − 79 =
23. 23.317 − 26 =
24. 24.269 − 39 =
25. 25.130 − 66 =
26. 26.293 − 26 =
27. 27.146 − 39 =
28. 28.272 − 66 =
29. 29.239 − 16 =
30. 30.392 − 29 =
31. 31.253 − 67 =
32. 32.141 − 39 =
33. 33.223 − 47 =
34. 34.200 − 46 =
35. 35.159 − 67 =
36. 36.275 − 36 =
37. 37.375 − 96 =
38. 38.568 − 67 =
39. 39.196 − 96 =
40. 40.119 − 28 =

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