Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 187 · 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. 1.67 − 38 =
2. 2.513 − 99 =
3. 3.426 − 97 =
4. 4.95 − 48 =
5. 5.190 − 19 =
6. 6.597 − 48 =
7. 7.367 − 17 =
8. 8.166 − 37 =
9. 9.351 − 49 =
10. 10.83 − 56 =
11. 11.267 − 38 =
12. 12.526 − 49 =
13. 13.568 − 19 =
14. 14.149 − 27 =
15. 15.177 − 77 =
16. 16.186 − 69 =
17. 17.111 − 96 =
18. 18.140 − 96 =
19. 19.244 − 17 =
20. 20.230 − 49 =
21. 21.556 − 46 =
22. 22.384 − 17 =
23. 23.153 − 66 =
24. 24.583 − 19 =
25. 25.268 − 36 =
26. 26.388 − 36 =
27. 27.281 − 39 =
28. 28.499 − 98 =
29. 29.237 − 76 =
30. 30.253 − 57 =
31. 31.232 − 48 =
32. 32.175 − 77 =
33. 33.264 − 28 =
34. 34.151 − 76 =
35. 35.456 − 96 =
36. 36.564 − 59 =
37. 37.373 − 18 =
38. 38.307 − 49 =
39. 39.438 − 46 =
40. 40.229 − 89 =

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