Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 426 · 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. 1.208 − 19 =
2. 2.484 − 37 =
3. 3.171 − 97 =
4. 4.513 − 78 =
5. 5.175 − 86 =
6. 6.353 − 29 =
7. 7.419 − 57 =
8. 8.264 − 56 =
9. 9.164 − 99 =
10. 10.213 − 16 =
11. 11.435 − 59 =
12. 12.382 − 19 =
13. 13.424 − 57 =
14. 14.426 − 16 =
15. 15.234 − 48 =
16. 16.385 − 47 =
17. 17.73 − 28 =
18. 18.158 − 86 =
19. 19.252 − 36 =
20. 20.264 − 47 =
21. 21.287 − 76 =
22. 22.197 − 96 =
23. 23.209 − 39 =
24. 24.380 − 29 =
25. 25.509 − 58 =
26. 26.122 − 88 =
27. 27.175 − 27 =
28. 28.483 − 28 =
29. 29.597 − 86 =
30. 30.391 − 28 =
31. 31.92 − 37 =
32. 32.542 − 58 =
33. 33.207 − 17 =
34. 34.396 − 56 =
35. 35.179 − 18 =
36. 36.90 − 26 =
37. 37.186 − 39 =
38. 38.91 − 89 =
39. 39.438 − 19 =
40. 40.152 − 67 =

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