Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 812 · 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. 1.0.63 × 0.5 — where does the decimal point go? (a) 0.315 (b) 0.0315 (c) 3.15 (d) 0.00315
2. 2.3.8 × 0.4 — where does the decimal point go? (a) 0.0152 (b) 0.152 (c) 15.2 (d) 1.52
3. 3.0.14 × 6 — where does the decimal point go? (a) 0.84 (b) 0.084 (c) 0.0084 (d) 8.4
4. 4.0.77 × 2 — where does the decimal point go? (a) 15.4 (b) 0.0154 (c) 0.154 (d) 1.54
5. 5.5.7 × 29 — where does the decimal point go? (a) 165.3 (b) 1653 (c) 16.53 (d) 1.653
6. 6.0.94 × 9 — where does the decimal point go? (a) 8.46 (b) 84.6 (c) 0.0846 (d) 0.846
7. 7.8.2 × 4.7 — where does the decimal point go? (a) 3.854 (b) 38.54 (c) 385.4 (d) 0.3854
8. 8.0.98 × 38 — where does the decimal point go? (a) 372.4 (b) 37.24 (c) 3.724 (d) 0.3724
9. 9.0.79 × 2 — where does the decimal point go? (a) 0.0158 (b) 1.58 (c) 15.8 (d) 0.158
10. 10.4.6 × 0.3 — where does the decimal point go? (a) 13.8 (b) 1.38 (c) 0.0138 (d) 0.138
11. 11.5.2 × 2.2 — where does the decimal point go? (a) 1.144 (b) 11.44 (c) 114.4 (d) 0.1144
12. 12.1.4 × 2.3 — where does the decimal point go? (a) 3.22 (b) 0.0322 (c) 32.2 (d) 0.322
13. 13.9.4 × 3.8 — where does the decimal point go? (a) 0.3572 (b) 357.2 (c) 3.572 (d) 35.72
14. 14.4.7 × 1.8 — where does the decimal point go? (a) 8.46 (b) 84.6 (c) 0.846 (d) 0.0846
15. 15.0.16 × 0.7 — where does the decimal point go? (a) 0.0112 (b) 0.00112 (c) 0.112 (d) 1.12
16. 16.0.59 × 0.6 — where does the decimal point go? (a) 0.354 (b) 0.0354 (c) 0.00354 (d) 3.54
17. 17.0.24 × 14 — where does the decimal point go? (a) 33.6 (b) 0.336 (c) 0.0336 (d) 3.36
18. 18.3.7 × 7 — where does the decimal point go? (a) 25.9 (b) 0.259 (c) 259 (d) 2.59
19. 19.0.55 × 35 — where does the decimal point go? (a) 192.5 (b) 1.925 (c) 0.1925 (d) 19.25
20. 20.0.85 × 2.1 — where does the decimal point go? (a) 0.1785 (b) 0.01785 (c) 1.785 (d) 17.85
21. 21.9.2 × 2.4 — where does the decimal point go? (a) 22.08 (b) 2.208 (c) 0.2208 (d) 220.8
22. 22.0.12 × 4 — where does the decimal point go? (a) 0.48 (b) 0.0048 (c) 0.048 (d) 4.8
23. 23.2.6 × 4.4 — where does the decimal point go? (a) 11.44 (b) 1.144 (c) 114.4 (d) 0.1144
24. 24.9.8 × 33 — where does the decimal point go? (a) 3.234 (b) 323.4 (c) 32.34 (d) 3234
25. 25.6.1 × 8 — where does the decimal point go? (a) 488 (b) 4.88 (c) 48.8 (d) 0.488
26. 26.3.1 × 0.8 — where does the decimal point go? (a) 2.48 (b) 0.0248 (c) 0.248 (d) 24.8
27. 27.0.29 × 8 — where does the decimal point go? (a) 0.0232 (b) 2.32 (c) 0.232 (d) 23.2
28. 28.9.6 × 3 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 288 (d) 28.8
29. 29.0.37 × 4 — where does the decimal point go? (a) 0.148 (b) 1.48 (c) 0.0148 (d) 14.8
30. 30.6.4 × 19 — where does the decimal point go? (a) 121.6 (b) 1.216 (c) 1216 (d) 12.16
31. 31.0.39 × 1.9 — where does the decimal point go? (a) 0.0741 (b) 0.741 (c) 7.41 (d) 0.00741
32. 32.0.84 × 6 — where does the decimal point go? (a) 0.0504 (b) 5.04 (c) 0.504 (d) 50.4
33. 33.4.1 × 0.4 — where does the decimal point go? (a) 0.0164 (b) 0.164 (c) 1.64 (d) 16.4
34. 34.4.6 × 9 — where does the decimal point go? (a) 41.4 (b) 4.14 (c) 414 (d) 0.414
35. 35.6.9 × 34 — where does the decimal point go? (a) 2346 (b) 2.346 (c) 234.6 (d) 23.46
36. 36.0.54 × 0.7 — where does the decimal point go? (a) 0.378 (b) 3.78 (c) 0.00378 (d) 0.0378
37. 37.0.74 × 21 — where does the decimal point go? (a) 1.554 (b) 155.4 (c) 15.54 (d) 0.1554
38. 38.0.28 × 34 — where does the decimal point go? (a) 0.0952 (b) 0.952 (c) 9.52 (d) 95.2
39. 39.0.68 × 4.3 — where does the decimal point go? (a) 0.2924 (b) 0.02924 (c) 29.24 (d) 2.924
40. 40.0.85 × 3 — where does the decimal point go? (a) 0.0255 (b) 0.255 (c) 25.5 (d) 2.55

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