Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 947 · 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. 1.426 − 19 =
2. 2.130 − 97 =
3. 3.446 − 86 =
4. 4.109 − 77 =
5. 5.558 − 26 =
6. 6.127 − 76 =
7. 7.249 − 76 =
8. 8.221 − 97 =
9. 9.247 − 17 =
10. 10.435 − 96 =
11. 11.94 − 76 =
12. 12.323 − 67 =
13. 13.358 − 27 =
14. 14.339 − 77 =
15. 15.156 − 68 =
16. 16.221 − 96 =
17. 17.172 − 29 =
18. 18.194 − 47 =
19. 19.198 − 97 =
20. 20.350 − 39 =
21. 21.523 − 26 =
22. 22.157 − 97 =
23. 23.348 − 26 =
24. 24.205 − 56 =
25. 25.193 − 77 =
26. 26.290 − 56 =
27. 27.298 − 28 =
28. 28.62 − 36 =
29. 29.493 − 28 =
30. 30.133 − 58 =
31. 31.163 − 17 =
32. 32.383 − 67 =
33. 33.236 − 59 =
34. 34.186 − 38 =
35. 35.489 − 66 =
36. 36.518 − 98 =
37. 37.560 − 96 =
38. 38.289 − 59 =
39. 39.149 − 58 =
40. 40.279 − 28 =

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