Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 942 · 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. 1.327 − 38 =
2. 2.381 − 56 =
3. 3.215 − 27 =
4. 4.242 − 77 =
5. 5.403 − 68 =
6. 6.186 − 16 =
7. 7.213 − 26 =
8. 8.105 − 17 =
9. 9.215 − 26 =
10. 10.289 − 69 =
11. 11.199 − 88 =
12. 12.513 − 99 =
13. 13.587 − 78 =
14. 14.305 − 28 =
15. 15.405 − 89 =
16. 16.539 − 38 =
17. 17.411 − 56 =
18. 18.363 − 99 =
19. 19.372 − 29 =
20. 20.244 − 87 =
21. 21.565 − 58 =
22. 22.353 − 89 =
23. 23.470 − 89 =
24. 24.154 − 76 =
25. 25.390 − 37 =
26. 26.441 − 99 =
27. 27.189 − 48 =
28. 28.85 − 56 =
29. 29.248 − 47 =
30. 30.319 − 96 =
31. 31.132 − 66 =
32. 32.318 − 26 =
33. 33.564 − 99 =
34. 34.86 − 28 =
35. 35.328 − 36 =
36. 36.79 − 27 =
37. 37.151 − 97 =
38. 38.367 − 26 =
39. 39.159 − 96 =
40. 40.159 − 97 =

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