Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 193 · 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. 1.500 − 28 =
2. 2.181 − 99 =
3. 3.266 − 98 =
4. 4.572 − 49 =
5. 5.369 − 76 =
6. 6.374 − 26 =
7. 7.408 − 76 =
8. 8.452 − 19 =
9. 9.262 − 27 =
10. 10.541 − 86 =
11. 11.379 − 86 =
12. 12.145 − 89 =
13. 13.103 − 66 =
14. 14.494 − 26 =
15. 15.293 − 47 =
16. 16.559 − 46 =
17. 17.418 − 86 =
18. 18.408 − 76 =
19. 19.223 − 38 =
20. 20.415 − 57 =
21. 21.566 − 68 =
22. 22.506 − 68 =
23. 23.197 − 48 =
24. 24.402 − 38 =
25. 25.367 − 48 =
26. 26.386 − 18 =
27. 27.67 − 59 =
28. 28.272 − 19 =
29. 29.584 − 27 =
30. 30.446 − 99 =
31. 31.121 − 49 =
32. 32.286 − 46 =
33. 33.372 − 58 =
34. 34.110 − 29 =
35. 35.556 − 37 =
36. 36.197 − 16 =
37. 37.249 − 78 =
38. 38.565 − 78 =
39. 39.179 − 68 =
40. 40.188 − 89 =

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