Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 152 · 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. 1.204 − 38 =
2. 2.265 − 77 =
3. 3.304 − 66 =
4. 4.134 − 18 =
5. 5.430 − 87 =
6. 6.462 − 18 =
7. 7.529 − 76 =
8. 8.564 − 47 =
9. 9.337 − 89 =
10. 10.251 − 89 =
11. 11.255 − 18 =
12. 12.263 − 26 =
13. 13.313 − 47 =
14. 14.209 − 77 =
15. 15.284 − 38 =
16. 16.258 − 97 =
17. 17.467 − 29 =
18. 18.99 − 57 =
19. 19.98 − 39 =
20. 20.87 − 68 =
21. 21.214 − 39 =
22. 22.113 − 26 =
23. 23.252 − 57 =
24. 24.209 − 56 =
25. 25.113 − 87 =
26. 26.379 − 98 =
27. 27.326 − 37 =
28. 28.158 − 56 =
29. 29.80 − 37 =
30. 30.226 − 78 =
31. 31.503 − 28 =
32. 32.590 − 66 =
33. 33.120 − 99 =
34. 34.183 − 39 =
35. 35.592 − 76 =
36. 36.559 − 37 =
37. 37.151 − 17 =
38. 38.387 − 88 =
39. 39.448 − 47 =
40. 40.53 − 26 =

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