Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 394 · 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. 1.215 − 57 =
2. 2.417 − 76 =
3. 3.435 − 79 =
4. 4.403 − 66 =
5. 5.541 − 17 =
6. 6.572 − 87 =
7. 7.583 − 37 =
8. 8.389 − 77 =
9. 9.423 − 36 =
10. 10.270 − 39 =
11. 11.456 − 57 =
12. 12.425 − 36 =
13. 13.351 − 78 =
14. 14.281 − 87 =
15. 15.488 − 18 =
16. 16.334 − 88 =
17. 17.452 − 79 =
18. 18.104 − 96 =
19. 19.437 − 16 =
20. 20.376 − 17 =
21. 21.66 − 38 =
22. 22.145 − 79 =
23. 23.544 − 19 =
24. 24.514 − 27 =
25. 25.292 − 66 =
26. 26.113 − 17 =
27. 27.331 − 77 =
28. 28.259 − 59 =
29. 29.315 − 26 =
30. 30.271 − 36 =
31. 31.507 − 16 =
32. 32.129 − 48 =
33. 33.178 − 78 =
34. 34.62 − 19 =
35. 35.153 − 56 =
36. 36.264 − 56 =
37. 37.223 − 19 =
38. 38.503 − 67 =
39. 39.519 − 86 =
40. 40.130 − 49 =

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