Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 304 · 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. 1.355 − 67 =
2. 2.506 − 69 =
3. 3.159 − 28 =
4. 4.501 − 38 =
5. 5.175 − 66 =
6. 6.123 − 17 =
7. 7.588 − 47 =
8. 8.89 − 48 =
9. 9.176 − 56 =
10. 10.336 − 37 =
11. 11.581 − 26 =
12. 12.352 − 28 =
13. 13.537 − 36 =
14. 14.171 − 57 =
15. 15.365 − 38 =
16. 16.281 − 18 =
17. 17.224 − 99 =
18. 18.161 − 39 =
19. 19.311 − 76 =
20. 20.104 − 86 =
21. 21.141 − 87 =
22. 22.518 − 19 =
23. 23.310 − 66 =
24. 24.137 − 59 =
25. 25.373 − 37 =
26. 26.191 − 99 =
27. 27.520 − 29 =
28. 28.481 − 16 =
29. 29.178 − 86 =
30. 30.71 − 28 =
31. 31.423 − 36 =
32. 32.115 − 58 =
33. 33.402 − 86 =
34. 34.168 − 38 =
35. 35.389 − 98 =
36. 36.250 − 37 =
37. 37.155 − 58 =
38. 38.353 − 29 =
39. 39.144 − 79 =
40. 40.275 − 39 =

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