Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 171 · 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. 1.123 − 36 =
2. 2.164 − 79 =
3. 3.214 − 59 =
4. 4.248 − 79 =
5. 5.497 − 48 =
6. 6.151 − 56 =
7. 7.175 − 86 =
8. 8.87 − 18 =
9. 9.534 − 76 =
10. 10.461 − 38 =
11. 11.378 − 28 =
12. 12.429 − 88 =
13. 13.133 − 38 =
14. 14.106 − 38 =
15. 15.333 − 66 =
16. 16.324 − 26 =
17. 17.220 − 59 =
18. 18.146 − 76 =
19. 19.123 − 26 =
20. 20.182 − 68 =
21. 21.550 − 17 =
22. 22.535 − 19 =
23. 23.401 − 68 =
24. 24.89 − 36 =
25. 25.133 − 46 =
26. 26.154 − 29 =
27. 27.561 − 86 =
28. 28.108 − 99 =
29. 29.492 − 87 =
30. 30.547 − 16 =
31. 31.273 − 97 =
32. 32.450 − 18 =
33. 33.422 − 89 =
34. 34.581 − 47 =
35. 35.495 − 17 =
36. 36.460 − 48 =
37. 37.145 − 86 =
38. 38.114 − 17 =
39. 39.510 − 36 =
40. 40.497 − 56 =

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