Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 380 · 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. 1.592 − 59 =
2. 2.288 − 96 =
3. 3.284 − 57 =
4. 4.254 − 86 =
5. 5.428 − 87 =
6. 6.457 − 98 =
7. 7.57 − 37 =
8. 8.97 − 29 =
9. 9.107 − 77 =
10. 10.501 − 37 =
11. 11.409 − 16 =
12. 12.338 − 39 =
13. 13.107 − 58 =
14. 14.174 − 87 =
15. 15.496 − 26 =
16. 16.89 − 39 =
17. 17.422 − 68 =
18. 18.244 − 37 =
19. 19.506 − 16 =
20. 20.572 − 99 =
21. 21.577 − 46 =
22. 22.55 − 49 =
23. 23.454 − 18 =
24. 24.438 − 98 =
25. 25.225 − 16 =
26. 26.213 − 57 =
27. 27.79 − 26 =
28. 28.193 − 28 =
29. 29.353 − 59 =
30. 30.65 − 59 =
31. 31.447 − 26 =
32. 32.312 − 19 =
33. 33.367 − 19 =
34. 34.514 − 36 =
35. 35.472 − 79 =
36. 36.437 − 28 =
37. 37.100 − 57 =
38. 38.258 − 58 =
39. 39.92 − 18 =
40. 40.302 − 46 =

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