Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 277 · 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. 1.380 − 28 =
2. 2.506 − 26 =
3. 3.173 − 97 =
4. 4.293 − 36 =
5. 5.586 − 98 =
6. 6.249 − 26 =
7. 7.402 − 79 =
8. 8.503 − 56 =
9. 9.550 − 48 =
10. 10.389 − 59 =
11. 11.185 − 59 =
12. 12.581 − 16 =
13. 13.374 − 88 =
14. 14.135 − 98 =
15. 15.330 − 67 =
16. 16.70 − 48 =
17. 17.158 − 98 =
18. 18.166 − 67 =
19. 19.102 − 37 =
20. 20.124 − 86 =
21. 21.387 − 76 =
22. 22.431 − 58 =
23. 23.196 − 29 =
24. 24.205 − 78 =
25. 25.108 − 67 =
26. 26.390 − 96 =
27. 27.94 − 59 =
28. 28.483 − 19 =
29. 29.440 − 37 =
30. 30.285 − 16 =
31. 31.486 − 48 =
32. 32.157 − 68 =
33. 33.529 − 28 =
34. 34.304 − 36 =
35. 35.472 − 96 =
36. 36.223 − 97 =
37. 37.571 − 16 =
38. 38.475 − 37 =
39. 39.120 − 28 =
40. 40.238 − 87 =

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