Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 113 · 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. 1.446 − 38 =
2. 2.520 − 16 =
3. 3.383 − 36 =
4. 4.123 − 46 =
5. 5.409 − 17 =
6. 6.303 − 87 =
7. 7.455 − 27 =
8. 8.592 − 66 =
9. 9.557 − 27 =
10. 10.424 − 36 =
11. 11.324 − 27 =
12. 12.219 − 77 =
13. 13.534 − 18 =
14. 14.150 − 87 =
15. 15.216 − 27 =
16. 16.460 − 37 =
17. 17.136 − 89 =
18. 18.495 − 19 =
19. 19.228 − 67 =
20. 20.262 − 98 =
21. 21.149 − 67 =
22. 22.259 − 89 =
23. 23.410 − 36 =
24. 24.570 − 19 =
25. 25.283 − 19 =
26. 26.220 − 76 =
27. 27.419 − 19 =
28. 28.98 − 18 =
29. 29.285 − 66 =
30. 30.124 − 27 =
31. 31.450 − 18 =
32. 32.65 − 16 =
33. 33.545 − 88 =
34. 34.357 − 97 =
35. 35.251 − 49 =
36. 36.83 − 69 =
37. 37.342 − 47 =
38. 38.250 − 88 =
39. 39.115 − 29 =
40. 40.140 − 58 =

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