Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 333 · 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. 1.63 − 49 =
2. 2.156 − 59 =
3. 3.407 − 88 =
4. 4.486 − 66 =
5. 5.55 − 47 =
6. 6.452 − 39 =
7. 7.291 − 18 =
8. 8.444 − 28 =
9. 9.140 − 86 =
10. 10.68 − 27 =
11. 11.574 − 98 =
12. 12.492 − 37 =
13. 13.401 − 78 =
14. 14.127 − 89 =
15. 15.355 − 66 =
16. 16.491 − 16 =
17. 17.139 − 66 =
18. 18.126 − 57 =
19. 19.140 − 29 =
20. 20.116 − 28 =
21. 21.397 − 19 =
22. 22.226 − 36 =
23. 23.110 − 36 =
24. 24.546 − 36 =
25. 25.338 − 39 =
26. 26.204 − 38 =
27. 27.420 − 49 =
28. 28.426 − 88 =
29. 29.353 − 98 =
30. 30.328 − 79 =
31. 31.578 − 59 =
32. 32.346 − 78 =
33. 33.367 − 26 =
34. 34.555 − 48 =
35. 35.528 − 66 =
36. 36.565 − 19 =
37. 37.509 − 98 =
38. 38.553 − 18 =
39. 39.510 − 28 =
40. 40.190 − 66 =

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