Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 175 · 40 questions

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

1. 1.8.7 × 3.7 — where does the decimal point go? (a) 3.219 (b) 321.9 (c) 0.3219 (d) 32.19
2. 2.4.6 × 2 — where does the decimal point go? (a) 9.2 (b) 0.92 (c) 0.092 (d) 92
3. 3.6.9 × 2.6 — where does the decimal point go? (a) 0.1794 (b) 1.794 (c) 179.4 (d) 17.94
4. 4.4.2 × 37 — where does the decimal point go? (a) 1.554 (b) 155.4 (c) 15.54 (d) 1554
5. 5.0.67 × 0.2 — where does the decimal point go? (a) 0.134 (b) 0.00134 (c) 1.34 (d) 0.0134
6. 6.5.5 × 11 — where does the decimal point go? (a) 0.605 (b) 60.5 (c) 6.05 (d) 605
7. 7.3.9 × 0.5 — where does the decimal point go? (a) 1.95 (b) 0.195 (c) 0.0195 (d) 19.5
8. 8.0.39 × 0.3 — where does the decimal point go? (a) 0.0117 (b) 0.117 (c) 1.17 (d) 0.00117
9. 9.3.2 × 17 — where does the decimal point go? (a) 54.4 (b) 544 (c) 5.44 (d) 0.544
10. 10.0.97 × 1.2 — where does the decimal point go? (a) 11.64 (b) 1.164 (c) 0.01164 (d) 0.1164
11. 11.8.1 × 2.5 — where does the decimal point go? (a) 20.25 (b) 2.025 (c) 0.2025 (d) 202.5
12. 12.0.78 × 0.4 — where does the decimal point go? (a) 0.00312 (b) 0.0312 (c) 0.312 (d) 3.12
13. 13.2.8 × 2.1 — where does the decimal point go? (a) 5.88 (b) 0.0588 (c) 0.588 (d) 58.8
14. 14.1.9 × 2 — where does the decimal point go? (a) 3.8 (b) 38 (c) 0.38 (d) 0.038
15. 15.8.8 × 2 — where does the decimal point go? (a) 0.176 (b) 17.6 (c) 176 (d) 1.76
16. 16.0.87 × 0.2 — where does the decimal point go? (a) 0.00174 (b) 0.0174 (c) 0.174 (d) 1.74
17. 17.8.9 × 0.3 — where does the decimal point go? (a) 0.0267 (b) 26.7 (c) 0.267 (d) 2.67
18. 18.2.9 × 4 — where does the decimal point go? (a) 1.16 (b) 11.6 (c) 0.116 (d) 116
19. 19.0.82 × 0.8 — where does the decimal point go? (a) 6.56 (b) 0.656 (c) 0.0656 (d) 0.00656
20. 20.0.92 × 4 — where does the decimal point go? (a) 3.68 (b) 0.368 (c) 0.0368 (d) 36.8
21. 21.0.92 × 6 — where does the decimal point go? (a) 55.2 (b) 5.52 (c) 0.0552 (d) 0.552
22. 22.2.3 × 37 — where does the decimal point go? (a) 0.851 (b) 85.1 (c) 8.51 (d) 851
23. 23.2.7 × 3.8 — where does the decimal point go? (a) 0.1026 (b) 1.026 (c) 10.26 (d) 102.6
24. 24.8.4 × 0.8 — where does the decimal point go? (a) 0.672 (b) 67.2 (c) 6.72 (d) 0.0672
25. 25.9.9 × 4.5 — where does the decimal point go? (a) 0.4455 (b) 445.5 (c) 4.455 (d) 44.55
26. 26.0.12 × 6 — where does the decimal point go? (a) 0.72 (b) 7.2 (c) 0.072 (d) 0.0072
27. 27.8.8 × 3 — where does the decimal point go? (a) 0.264 (b) 264 (c) 26.4 (d) 2.64
28. 28.8.6 × 8 — where does the decimal point go? (a) 68.8 (b) 6.88 (c) 0.688 (d) 688
29. 29.9.1 × 0.6 — where does the decimal point go? (a) 0.0546 (b) 54.6 (c) 0.546 (d) 5.46
30. 30.2.7 × 29 — where does the decimal point go? (a) 7.83 (b) 78.3 (c) 0.783 (d) 783
31. 31.0.73 × 0.6 — where does the decimal point go? (a) 0.00438 (b) 4.38 (c) 0.0438 (d) 0.438
32. 32.0.35 × 0.9 — where does the decimal point go? (a) 0.00315 (b) 3.15 (c) 0.0315 (d) 0.315
33. 33.0.12 × 3 — where does the decimal point go? (a) 0.036 (b) 3.6 (c) 0.36 (d) 0.0036
34. 34.0.74 × 19 — where does the decimal point go? (a) 1.406 (b) 14.06 (c) 140.6 (d) 0.1406
35. 35.0.94 × 44 — where does the decimal point go? (a) 4.136 (b) 41.36 (c) 413.6 (d) 0.4136
36. 36.2.1 × 2.4 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 0.504 (d) 0.0504
37. 37.0.83 × 7 — where does the decimal point go? (a) 5.81 (b) 58.1 (c) 0.0581 (d) 0.581
38. 38.7.1 × 3.4 — where does the decimal point go? (a) 0.2414 (b) 241.4 (c) 2.414 (d) 24.14
39. 39.3.9 × 5 — where does the decimal point go? (a) 1.95 (b) 19.5 (c) 0.195 (d) 195
40. 40.0.93 × 7 — where does the decimal point go? (a) 0.651 (b) 6.51 (c) 65.1 (d) 0.0651

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