Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 923 · 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. 1.225 − 16 =
2. 2.389 − 56 =
3. 3.484 − 28 =
4. 4.225 − 58 =
5. 5.544 − 67 =
6. 6.234 − 49 =
7. 7.216 − 67 =
8. 8.453 − 98 =
9. 9.296 − 88 =
10. 10.170 − 36 =
11. 11.550 − 58 =
12. 12.173 − 77 =
13. 13.434 − 86 =
14. 14.359 − 69 =
15. 15.156 − 69 =
16. 16.99 − 86 =
17. 17.74 − 58 =
18. 18.283 − 57 =
19. 19.256 − 29 =
20. 20.379 − 69 =
21. 21.522 − 57 =
22. 22.203 − 16 =
23. 23.103 − 67 =
24. 24.119 − 19 =
25. 25.397 − 28 =
26. 26.213 − 79 =
27. 27.483 − 58 =
28. 28.190 − 59 =
29. 29.526 − 56 =
30. 30.157 − 58 =
31. 31.533 − 17 =
32. 32.467 − 58 =
33. 33.180 − 57 =
34. 34.570 − 47 =
35. 35.182 − 39 =
36. 36.100 − 78 =
37. 37.196 − 36 =
38. 38.107 − 47 =
39. 39.270 − 59 =
40. 40.313 − 76 =

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