Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 533 · 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. 1.103 − 19 =
2. 2.113 − 19 =
3. 3.237 − 98 =
4. 4.464 − 26 =
5. 5.340 − 96 =
6. 6.178 − 18 =
7. 7.582 − 79 =
8. 8.570 − 76 =
9. 9.206 − 47 =
10. 10.524 − 38 =
11. 11.187 − 89 =
12. 12.320 − 38 =
13. 13.575 − 99 =
14. 14.561 − 67 =
15. 15.557 − 46 =
16. 16.542 − 86 =
17. 17.575 − 66 =
18. 18.543 − 96 =
19. 19.265 − 17 =
20. 20.237 − 39 =
21. 21.305 − 29 =
22. 22.147 − 57 =
23. 23.303 − 39 =
24. 24.95 − 46 =
25. 25.563 − 88 =
26. 26.473 − 46 =
27. 27.273 − 18 =
28. 28.89 − 38 =
29. 29.236 − 37 =
30. 30.432 − 16 =
31. 31.304 − 78 =
32. 32.157 − 27 =
33. 33.77 − 27 =
34. 34.521 − 68 =
35. 35.482 − 96 =
36. 36.548 − 47 =
37. 37.291 − 87 =
38. 38.435 − 26 =
39. 39.193 − 76 =
40. 40.198 − 28 =

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