Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 916 · 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. 1.280 − 49 =
2. 2.151 − 36 =
3. 3.536 − 68 =
4. 4.80 − 16 =
5. 5.200 − 38 =
6. 6.352 − 58 =
7. 7.546 − 98 =
8. 8.527 − 27 =
9. 9.100 − 59 =
10. 10.217 − 76 =
11. 11.421 − 48 =
12. 12.473 − 66 =
13. 13.109 − 69 =
14. 14.200 − 19 =
15. 15.175 − 98 =
16. 16.382 − 56 =
17. 17.249 − 16 =
18. 18.313 − 68 =
19. 19.566 − 99 =
20. 20.207 − 36 =
21. 21.104 − 56 =
22. 22.126 − 56 =
23. 23.203 − 68 =
24. 24.183 − 87 =
25. 25.182 − 88 =
26. 26.481 − 16 =
27. 27.446 − 97 =
28. 28.538 − 19 =
29. 29.153 − 99 =
30. 30.377 − 29 =
31. 31.467 − 48 =
32. 32.66 − 19 =
33. 33.118 − 36 =
34. 34.475 − 96 =
35. 35.551 − 28 =
36. 36.313 − 19 =
37. 37.510 − 76 =
38. 38.545 − 98 =
39. 39.379 − 68 =
40. 40.97 − 29 =

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