Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 103 · 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. 1.95 − 38 =
2. 2.582 − 36 =
3. 3.345 − 68 =
4. 4.244 − 47 =
5. 5.406 − 38 =
6. 6.293 − 76 =
7. 7.353 − 48 =
8. 8.424 − 86 =
9. 9.563 − 78 =
10. 10.568 − 69 =
11. 11.141 − 67 =
12. 12.260 − 17 =
13. 13.436 − 18 =
14. 14.198 − 38 =
15. 15.108 − 26 =
16. 16.362 − 37 =
17. 17.337 − 56 =
18. 18.311 − 88 =
19. 19.386 − 26 =
20. 20.453 − 29 =
21. 21.544 − 49 =
22. 22.87 − 77 =
23. 23.236 − 89 =
24. 24.204 − 66 =
25. 25.146 − 49 =
26. 26.493 − 68 =
27. 27.170 − 36 =
28. 28.101 − 56 =
29. 29.171 − 76 =
30. 30.230 − 29 =
31. 31.294 − 69 =
32. 32.148 − 99 =
33. 33.123 − 59 =
34. 34.583 − 78 =
35. 35.219 − 58 =
36. 36.241 − 26 =
37. 37.574 − 46 =
38. 38.249 − 99 =
39. 39.158 − 66 =
40. 40.140 − 39 =

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