Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 49 · 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. 1.129 − 59 =
2. 2.65 − 29 =
3. 3.599 − 68 =
4. 4.594 − 86 =
5. 5.381 − 18 =
6. 6.461 − 47 =
7. 7.145 − 89 =
8. 8.300 − 29 =
9. 9.272 − 68 =
10. 10.80 − 69 =
11. 11.174 − 67 =
12. 12.495 − 47 =
13. 13.508 − 26 =
14. 14.319 − 16 =
15. 15.307 − 18 =
16. 16.306 − 19 =
17. 17.396 − 26 =
18. 18.206 − 98 =
19. 19.270 − 46 =
20. 20.460 − 27 =
21. 21.287 − 66 =
22. 22.304 − 48 =
23. 23.353 − 78 =
24. 24.407 − 97 =
25. 25.248 − 16 =
26. 26.69 − 59 =
27. 27.511 − 48 =
28. 28.457 − 77 =
29. 29.138 − 17 =
30. 30.505 − 16 =
31. 31.200 − 69 =
32. 32.299 − 98 =
33. 33.421 − 57 =
34. 34.211 − 17 =
35. 35.174 − 18 =
36. 36.382 − 86 =
37. 37.275 − 86 =
38. 38.135 − 37 =
39. 39.473 − 79 =
40. 40.170 − 78 =

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