Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 9 · 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. 1.161 − 56 =
2. 2.515 − 48 =
3. 3.310 − 38 =
4. 4.356 − 96 =
5. 5.127 − 36 =
6. 6.561 − 46 =
7. 7.340 − 96 =
8. 8.473 − 16 =
9. 9.155 − 56 =
10. 10.444 − 28 =
11. 11.123 − 48 =
12. 12.465 − 47 =
13. 13.356 − 97 =
14. 14.455 − 39 =
15. 15.356 − 37 =
16. 16.75 − 17 =
17. 17.238 − 38 =
18. 18.224 − 29 =
19. 19.347 − 37 =
20. 20.520 − 56 =
21. 21.506 − 98 =
22. 22.434 − 98 =
23. 23.450 − 78 =
24. 24.176 − 56 =
25. 25.106 − 69 =
26. 26.246 − 77 =
27. 27.599 − 46 =
28. 28.94 − 57 =
29. 29.434 − 96 =
30. 30.210 − 37 =
31. 31.476 − 27 =
32. 32.169 − 26 =
33. 33.101 − 26 =
34. 34.171 − 39 =
35. 35.245 − 69 =
36. 36.555 − 99 =
37. 37.514 − 87 =
38. 38.517 − 96 =
39. 39.536 − 79 =
40. 40.83 − 47 =

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