Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 393 · 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. 1.3.3 × 4.7 — where does the decimal point go? (a) 1.551 (b) 15.51 (c) 0.1551 (d) 155.1
2. 2.0.75 × 0.3 — where does the decimal point go? (a) 0.225 (b) 0.0225 (c) 0.00225 (d) 2.25
3. 3.2.3 × 2.8 — where does the decimal point go? (a) 6.44 (b) 64.4 (c) 0.0644 (d) 0.644
4. 4.0.47 × 9 — where does the decimal point go? (a) 0.423 (b) 0.0423 (c) 4.23 (d) 42.3
5. 5.0.54 × 22 — where does the decimal point go? (a) 11.88 (b) 118.8 (c) 0.1188 (d) 1.188
6. 6.0.26 × 0.7 — where does the decimal point go? (a) 0.182 (b) 1.82 (c) 0.0182 (d) 0.00182
7. 7.5.9 × 31 — where does the decimal point go? (a) 1.829 (b) 1829 (c) 182.9 (d) 18.29
8. 8.1.9 × 3.9 — where does the decimal point go? (a) 0.741 (b) 74.1 (c) 0.0741 (d) 7.41
9. 9.2.8 × 0.4 — where does the decimal point go? (a) 0.112 (b) 0.0112 (c) 11.2 (d) 1.12
10. 10.6.7 × 31 — where does the decimal point go? (a) 20.77 (b) 2077 (c) 2.077 (d) 207.7
11. 11.0.81 × 7 — where does the decimal point go? (a) 56.7 (b) 0.0567 (c) 5.67 (d) 0.567
12. 12.0.36 × 0.6 — where does the decimal point go? (a) 0.0216 (b) 0.00216 (c) 2.16 (d) 0.216
13. 13.0.27 × 9 — where does the decimal point go? (a) 2.43 (b) 0.0243 (c) 24.3 (d) 0.243
14. 14.6.2 × 1.4 — where does the decimal point go? (a) 8.68 (b) 0.0868 (c) 0.868 (d) 86.8
15. 15.0.97 × 5 — where does the decimal point go? (a) 0.485 (b) 4.85 (c) 48.5 (d) 0.0485
16. 16.0.23 × 22 — where does the decimal point go? (a) 0.0506 (b) 0.506 (c) 5.06 (d) 50.6
17. 17.3.3 × 0.4 — where does the decimal point go? (a) 0.0132 (b) 1.32 (c) 13.2 (d) 0.132
18. 18.0.51 × 15 — where does the decimal point go? (a) 0.0765 (b) 76.5 (c) 0.765 (d) 7.65
19. 19.3.2 × 0.8 — where does the decimal point go? (a) 0.256 (b) 0.0256 (c) 25.6 (d) 2.56
20. 20.0.84 × 1.3 — where does the decimal point go? (a) 1.092 (b) 0.1092 (c) 0.01092 (d) 10.92
21. 21.0.33 × 0.8 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 0.0264 (d) 0.00264
22. 22.0.62 × 4.6 — where does the decimal point go? (a) 28.52 (b) 2.852 (c) 0.2852 (d) 0.02852
23. 23.0.46 × 29 — where does the decimal point go? (a) 13.34 (b) 1.334 (c) 133.4 (d) 0.1334
24. 24.9.6 × 8 — where does the decimal point go? (a) 0.768 (b) 7.68 (c) 76.8 (d) 768
25. 25.8.6 × 2.7 — where does the decimal point go? (a) 2.322 (b) 23.22 (c) 0.2322 (d) 232.2
26. 26.6.7 × 0.6 — where does the decimal point go? (a) 40.2 (b) 0.402 (c) 0.0402 (d) 4.02
27. 27.0.29 × 3.5 — where does the decimal point go? (a) 0.1015 (b) 1.015 (c) 0.01015 (d) 10.15
28. 28.7.8 × 2 — where does the decimal point go? (a) 15.6 (b) 1.56 (c) 0.156 (d) 156
29. 29.0.31 × 5 — where does the decimal point go? (a) 0.155 (b) 0.0155 (c) 15.5 (d) 1.55
30. 30.2.4 × 0.2 — where does the decimal point go? (a) 0.48 (b) 4.8 (c) 0.048 (d) 0.0048
31. 31.9.3 × 5 — where does the decimal point go? (a) 4.65 (b) 465 (c) 46.5 (d) 0.465
32. 32.0.92 × 0.3 — where does the decimal point go? (a) 2.76 (b) 0.276 (c) 0.0276 (d) 0.00276
33. 33.2.7 × 42 — where does the decimal point go? (a) 1.134 (b) 1134 (c) 113.4 (d) 11.34
34. 34.0.37 × 38 — where does the decimal point go? (a) 1.406 (b) 14.06 (c) 0.1406 (d) 140.6
35. 35.0.59 × 6 — where does the decimal point go? (a) 0.354 (b) 3.54 (c) 0.0354 (d) 35.4
36. 36.0.54 × 2.6 — where does the decimal point go? (a) 14.04 (b) 1.404 (c) 0.01404 (d) 0.1404
37. 37.2.2 × 2.9 — where does the decimal point go? (a) 0.638 (b) 63.8 (c) 6.38 (d) 0.0638
38. 38.0.34 × 0.2 — where does the decimal point go? (a) 0.68 (b) 0.0068 (c) 0.068 (d) 0.00068
39. 39.4.2 × 0.8 — where does the decimal point go? (a) 33.6 (b) 0.336 (c) 0.0336 (d) 3.36
40. 40.8.8 × 8 — where does the decimal point go? (a) 7.04 (b) 0.704 (c) 70.4 (d) 704

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