Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 10 · 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. 1.595 − 88 =
2. 2.595 − 88 =
3. 3.101 − 26 =
4. 4.265 − 88 =
5. 5.495 − 26 =
6. 6.268 − 26 =
7. 7.81 − 17 =
8. 8.138 − 18 =
9. 9.516 − 37 =
10. 10.60 − 19 =
11. 11.286 − 76 =
12. 12.231 − 79 =
13. 13.259 − 17 =
14. 14.230 − 68 =
15. 15.153 − 26 =
16. 16.414 − 89 =
17. 17.271 − 47 =
18. 18.565 − 89 =
19. 19.320 − 66 =
20. 20.439 − 99 =
21. 21.496 − 77 =
22. 22.345 − 89 =
23. 23.206 − 69 =
24. 24.399 − 96 =
25. 25.186 − 98 =
26. 26.564 − 47 =
27. 27.546 − 59 =
28. 28.124 − 87 =
29. 29.431 − 16 =
30. 30.324 − 99 =
31. 31.199 − 17 =
32. 32.425 − 86 =
33. 33.426 − 48 =
34. 34.199 − 16 =
35. 35.133 − 47 =
36. 36.280 − 69 =
37. 37.234 − 86 =
38. 38.84 − 67 =
39. 39.516 − 76 =
40. 40.533 − 28 =

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