Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 781 · 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. 1.394 − 86 =
2. 2.561 − 67 =
3. 3.456 − 78 =
4. 4.424 − 36 =
5. 5.495 − 97 =
6. 6.394 − 26 =
7. 7.419 − 49 =
8. 8.495 − 57 =
9. 9.160 − 79 =
10. 10.120 − 48 =
11. 11.378 − 77 =
12. 12.343 − 29 =
13. 13.437 − 18 =
14. 14.267 − 89 =
15. 15.315 − 66 =
16. 16.207 − 59 =
17. 17.427 − 49 =
18. 18.155 − 46 =
19. 19.237 − 37 =
20. 20.443 − 26 =
21. 21.133 − 99 =
22. 22.217 − 49 =
23. 23.342 − 96 =
24. 24.452 − 66 =
25. 25.407 − 46 =
26. 26.416 − 36 =
27. 27.321 − 18 =
28. 28.511 − 79 =
29. 29.592 − 98 =
30. 30.205 − 99 =
31. 31.161 − 36 =
32. 32.402 − 68 =
33. 33.467 − 69 =
34. 34.174 − 36 =
35. 35.400 − 99 =
36. 36.344 − 29 =
37. 37.433 − 98 =
38. 38.301 − 97 =
39. 39.434 − 59 =
40. 40.213 − 76 =

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