Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 710 · 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. 1.0.19 × 0.8 — where does the decimal point go? (a) 0.152 (b) 0.00152 (c) 1.52 (d) 0.0152
2. 2.6.3 × 8 — where does the decimal point go? (a) 504 (b) 0.504 (c) 50.4 (d) 5.04
3. 3.0.19 × 34 — where does the decimal point go? (a) 64.6 (b) 6.46 (c) 0.646 (d) 0.0646
4. 4.0.15 × 0.5 — where does the decimal point go? (a) 0.0075 (b) 0.75 (c) 0.075 (d) 0.00075
5. 5.2.9 × 0.6 — where does the decimal point go? (a) 0.174 (b) 0.0174 (c) 1.74 (d) 17.4
6. 6.4.8 × 3.1 — where does the decimal point go? (a) 148.8 (b) 1.488 (c) 14.88 (d) 0.1488
7. 7.4.4 × 1.8 — where does the decimal point go? (a) 79.2 (b) 0.792 (c) 0.0792 (d) 7.92
8. 8.3.8 × 36 — where does the decimal point go? (a) 1.368 (b) 13.68 (c) 136.8 (d) 1368
9. 9.3.8 × 24 — where does the decimal point go? (a) 91.2 (b) 9.12 (c) 912 (d) 0.912
10. 10.0.64 × 0.7 — where does the decimal point go? (a) 0.0448 (b) 0.448 (c) 0.00448 (d) 4.48
11. 11.5.9 × 4 — where does the decimal point go? (a) 2.36 (b) 236 (c) 23.6 (d) 0.236
12. 12.0.83 × 35 — where does the decimal point go? (a) 2.905 (b) 0.2905 (c) 290.5 (d) 29.05
13. 13.0.86 × 2.9 — where does the decimal point go? (a) 2.494 (b) 24.94 (c) 0.02494 (d) 0.2494
14. 14.6.2 × 12 — where does the decimal point go? (a) 7.44 (b) 0.744 (c) 74.4 (d) 744
15. 15.0.68 × 19 — where does the decimal point go? (a) 0.1292 (b) 129.2 (c) 12.92 (d) 1.292
16. 16.0.39 × 2.6 — where does the decimal point go? (a) 0.1014 (b) 0.01014 (c) 10.14 (d) 1.014
17. 17.0.55 × 1.7 — where does the decimal point go? (a) 9.35 (b) 0.00935 (c) 0.935 (d) 0.0935
18. 18.3.4 × 0.9 — where does the decimal point go? (a) 0.306 (b) 0.0306 (c) 3.06 (d) 30.6
19. 19.5.8 × 28 — where does the decimal point go? (a) 1624 (b) 1.624 (c) 162.4 (d) 16.24
20. 20.0.12 × 9 — where does the decimal point go? (a) 0.108 (b) 10.8 (c) 0.0108 (d) 1.08
21. 21.8.5 × 0.9 — where does the decimal point go? (a) 76.5 (b) 0.0765 (c) 7.65 (d) 0.765
22. 22.5.6 × 3 — where does the decimal point go? (a) 16.8 (b) 168 (c) 1.68 (d) 0.168
23. 23.0.84 × 3.1 — where does the decimal point go? (a) 0.02604 (b) 2.604 (c) 26.04 (d) 0.2604
24. 24.4.7 × 0.5 — where does the decimal point go? (a) 2.35 (b) 0.235 (c) 23.5 (d) 0.0235
25. 25.7.3 × 4 — where does the decimal point go? (a) 292 (b) 0.292 (c) 2.92 (d) 29.2
26. 26.0.31 × 9 — where does the decimal point go? (a) 2.79 (b) 27.9 (c) 0.279 (d) 0.0279
27. 27.1.2 × 0.4 — where does the decimal point go? (a) 0.048 (b) 0.48 (c) 4.8 (d) 0.0048
28. 28.0.87 × 11 — where does the decimal point go? (a) 0.957 (b) 9.57 (c) 0.0957 (d) 95.7
29. 29.3.9 × 0.5 — where does the decimal point go? (a) 0.0195 (b) 1.95 (c) 19.5 (d) 0.195
30. 30.5.3 × 2 — where does the decimal point go? (a) 106 (b) 0.106 (c) 1.06 (d) 10.6
31. 31.1.9 × 4 — where does the decimal point go? (a) 0.076 (b) 76 (c) 0.76 (d) 7.6
32. 32.1.7 × 4 — where does the decimal point go? (a) 6.8 (b) 68 (c) 0.68 (d) 0.068
33. 33.0.47 × 0.4 — where does the decimal point go? (a) 1.88 (b) 0.0188 (c) 0.00188 (d) 0.188
34. 34.8.2 × 0.4 — where does the decimal point go? (a) 0.328 (b) 32.8 (c) 0.0328 (d) 3.28
35. 35.0.54 × 0.6 — where does the decimal point go? (a) 3.24 (b) 0.0324 (c) 0.00324 (d) 0.324
36. 36.2.4 × 17 — where does the decimal point go? (a) 408 (b) 4.08 (c) 0.408 (d) 40.8
37. 37.0.75 × 2.7 — where does the decimal point go? (a) 20.25 (b) 0.2025 (c) 0.02025 (d) 2.025
38. 38.9.6 × 3 — where does the decimal point go? (a) 2.88 (b) 28.8 (c) 288 (d) 0.288
39. 39.1.7 × 0.5 — where does the decimal point go? (a) 0.85 (b) 0.0085 (c) 0.085 (d) 8.5
40. 40.0.45 × 0.7 — where does the decimal point go? (a) 0.315 (b) 0.0315 (c) 3.15 (d) 0.00315

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