Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 203 · 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. 1.98 − 87 =
2. 2.501 − 69 =
3. 3.366 − 48 =
4. 4.545 − 47 =
5. 5.166 − 19 =
6. 6.407 − 88 =
7. 7.294 − 76 =
8. 8.60 − 19 =
9. 9.126 − 16 =
10. 10.593 − 56 =
11. 11.479 − 18 =
12. 12.497 − 28 =
13. 13.235 − 76 =
14. 14.70 − 58 =
15. 15.159 − 27 =
16. 16.184 − 88 =
17. 17.326 − 29 =
18. 18.452 − 47 =
19. 19.297 − 48 =
20. 20.599 − 68 =
21. 21.565 − 57 =
22. 22.102 − 28 =
23. 23.433 − 47 =
24. 24.543 − 57 =
25. 25.170 − 77 =
26. 26.380 − 88 =
27. 27.385 − 26 =
28. 28.272 − 99 =
29. 29.231 − 98 =
30. 30.74 − 28 =
31. 31.284 − 68 =
32. 32.564 − 98 =
33. 33.410 − 38 =
34. 34.301 − 79 =
35. 35.161 − 37 =
36. 36.261 − 79 =
37. 37.90 − 66 =
38. 38.163 − 48 =
39. 39.85 − 49 =
40. 40.219 − 76 =

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