Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 388 · 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. 1.176 − 88 =
2. 2.528 − 47 =
3. 3.294 − 59 =
4. 4.399 − 98 =
5. 5.178 − 97 =
6. 6.203 − 99 =
7. 7.564 − 97 =
8. 8.408 − 37 =
9. 9.339 − 87 =
10. 10.562 − 76 =
11. 11.229 − 37 =
12. 12.274 − 27 =
13. 13.421 − 56 =
14. 14.216 − 17 =
15. 15.591 − 36 =
16. 16.83 − 18 =
17. 17.154 − 87 =
18. 18.411 − 28 =
19. 19.371 − 36 =
20. 20.419 − 57 =
21. 21.374 − 29 =
22. 22.159 − 98 =
23. 23.588 − 77 =
24. 24.299 − 76 =
25. 25.132 − 96 =
26. 26.356 − 46 =
27. 27.165 − 16 =
28. 28.588 − 77 =
29. 29.574 − 19 =
30. 30.589 − 97 =
31. 31.175 − 77 =
32. 32.289 − 98 =
33. 33.215 − 56 =
34. 34.82 − 28 =
35. 35.330 − 49 =
36. 36.514 − 36 =
37. 37.248 − 37 =
38. 38.196 − 28 =
39. 39.205 − 57 =
40. 40.371 − 79 =

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