Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 785 · 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. 1.454 − 16 =
2. 2.404 − 27 =
3. 3.447 − 57 =
4. 4.419 − 97 =
5. 5.548 − 56 =
6. 6.66 − 19 =
7. 7.474 − 46 =
8. 8.99 − 56 =
9. 9.425 − 28 =
10. 10.475 − 36 =
11. 11.176 − 27 =
12. 12.456 − 38 =
13. 13.217 − 48 =
14. 14.180 − 18 =
15. 15.154 − 67 =
16. 16.317 − 97 =
17. 17.582 − 78 =
18. 18.559 − 66 =
19. 19.316 − 58 =
20. 20.296 − 49 =
21. 21.438 − 97 =
22. 22.328 − 96 =
23. 23.146 − 18 =
24. 24.55 − 27 =
25. 25.253 − 49 =
26. 26.282 − 47 =
27. 27.425 − 99 =
28. 28.265 − 97 =
29. 29.135 − 17 =
30. 30.521 − 88 =
31. 31.496 − 76 =
32. 32.189 − 97 =
33. 33.242 − 49 =
34. 34.321 − 68 =
35. 35.231 − 86 =
36. 36.102 − 29 =
37. 37.340 − 18 =
38. 38.345 − 19 =
39. 39.81 − 19 =
40. 40.330 − 19 =

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