Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 992 · 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. 1.210 − 37 =
2. 2.594 − 88 =
3. 3.129 − 37 =
4. 4.423 − 77 =
5. 5.553 − 47 =
6. 6.520 − 39 =
7. 7.260 − 29 =
8. 8.128 − 77 =
9. 9.179 − 19 =
10. 10.349 − 99 =
11. 11.305 − 47 =
12. 12.495 − 49 =
13. 13.471 − 39 =
14. 14.53 − 38 =
15. 15.110 − 36 =
16. 16.458 − 96 =
17. 17.509 − 86 =
18. 18.265 − 97 =
19. 19.578 − 38 =
20. 20.419 − 39 =
21. 21.352 − 29 =
22. 22.258 − 46 =
23. 23.326 − 86 =
24. 24.214 − 96 =
25. 25.416 − 69 =
26. 26.548 − 39 =
27. 27.335 − 77 =
28. 28.217 − 58 =
29. 29.106 − 56 =
30. 30.231 − 29 =
31. 31.461 − 57 =
32. 32.284 − 18 =
33. 33.579 − 37 =
34. 34.170 − 79 =
35. 35.173 − 77 =
36. 36.348 − 39 =
37. 37.503 − 49 =
38. 38.510 − 67 =
39. 39.241 − 47 =
40. 40.174 − 36 =

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