Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 929 · 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. 1.0.41 × 3.5 — where does the decimal point go? (a) 0.1435 (b) 1.435 (c) 0.01435 (d) 14.35
2. 2.0.53 × 34 — where does the decimal point go? (a) 18.02 (b) 1.802 (c) 180.2 (d) 0.1802
3. 3.0.13 × 23 — where does the decimal point go? (a) 29.9 (b) 0.299 (c) 2.99 (d) 0.0299
4. 4.3.6 × 4 — where does the decimal point go? (a) 14.4 (b) 0.144 (c) 1.44 (d) 144
5. 5.0.52 × 0.4 — where does the decimal point go? (a) 0.208 (b) 0.00208 (c) 2.08 (d) 0.0208
6. 6.0.91 × 0.4 — where does the decimal point go? (a) 0.0364 (b) 0.364 (c) 0.00364 (d) 3.64
7. 7.0.15 × 29 — where does the decimal point go? (a) 4.35 (b) 43.5 (c) 0.435 (d) 0.0435
8. 8.0.12 × 2 — where does the decimal point go? (a) 0.24 (b) 0.024 (c) 0.0024 (d) 2.4
9. 9.7.1 × 2.3 — where does the decimal point go? (a) 163.3 (b) 16.33 (c) 0.1633 (d) 1.633
10. 10.8.2 × 6 — where does the decimal point go? (a) 4.92 (b) 0.492 (c) 492 (d) 49.2
11. 11.0.19 × 7 — where does the decimal point go? (a) 0.133 (b) 13.3 (c) 0.0133 (d) 1.33
12. 12.5.1 × 4.3 — where does the decimal point go? (a) 2.193 (b) 219.3 (c) 0.2193 (d) 21.93
13. 13.0.43 × 0.6 — where does the decimal point go? (a) 0.258 (b) 2.58 (c) 0.0258 (d) 0.00258
14. 14.0.83 × 0.4 — where does the decimal point go? (a) 0.00332 (b) 3.32 (c) 0.0332 (d) 0.332
15. 15.0.42 × 43 — where does the decimal point go? (a) 18.06 (b) 180.6 (c) 1.806 (d) 0.1806
16. 16.8.8 × 17 — where does the decimal point go? (a) 14.96 (b) 149.6 (c) 1496 (d) 1.496
17. 17.1.7 × 9 — where does the decimal point go? (a) 0.153 (b) 153 (c) 15.3 (d) 1.53
18. 18.0.24 × 3 — where does the decimal point go? (a) 7.2 (b) 0.072 (c) 0.72 (d) 0.0072
19. 19.3.7 × 4 — where does the decimal point go? (a) 14.8 (b) 1.48 (c) 0.148 (d) 148
20. 20.4.9 × 19 — where does the decimal point go? (a) 9.31 (b) 0.931 (c) 93.1 (d) 931
21. 21.0.19 × 34 — where does the decimal point go? (a) 0.0646 (b) 0.646 (c) 64.6 (d) 6.46
22. 22.4.8 × 43 — where does the decimal point go? (a) 206.4 (b) 2.064 (c) 2064 (d) 20.64
23. 23.3.6 × 3 — where does the decimal point go? (a) 1.08 (b) 10.8 (c) 0.108 (d) 108
24. 24.0.61 × 48 — where does the decimal point go? (a) 29.28 (b) 292.8 (c) 2.928 (d) 0.2928
25. 25.5.4 × 3.3 — where does the decimal point go? (a) 1.782 (b) 178.2 (c) 17.82 (d) 0.1782
26. 26.1.3 × 0.3 — where does the decimal point go? (a) 0.039 (b) 3.9 (c) 0.39 (d) 0.0039
27. 27.0.67 × 8 — where does the decimal point go? (a) 5.36 (b) 0.0536 (c) 0.536 (d) 53.6
28. 28.2.8 × 6 — where does the decimal point go? (a) 0.168 (b) 1.68 (c) 168 (d) 16.8
29. 29.5.7 × 8 — where does the decimal point go? (a) 45.6 (b) 0.456 (c) 4.56 (d) 456
30. 30.1.3 × 2.4 — where does the decimal point go? (a) 3.12 (b) 0.312 (c) 31.2 (d) 0.0312
31. 31.9.2 × 8 — where does the decimal point go? (a) 73.6 (b) 7.36 (c) 736 (d) 0.736
32. 32.7.7 × 4 — where does the decimal point go? (a) 3.08 (b) 0.308 (c) 30.8 (d) 308
33. 33.0.93 × 29 — where does the decimal point go? (a) 26.97 (b) 2.697 (c) 269.7 (d) 0.2697
34. 34.3.1 × 4 — where does the decimal point go? (a) 0.124 (b) 124 (c) 12.4 (d) 1.24
35. 35.3.6 × 2 — where does the decimal point go? (a) 72 (b) 7.2 (c) 0.072 (d) 0.72
36. 36.5.2 × 0.8 — where does the decimal point go? (a) 0.416 (b) 4.16 (c) 41.6 (d) 0.0416
37. 37.0.56 × 6 — where does the decimal point go? (a) 0.336 (b) 33.6 (c) 0.0336 (d) 3.36
38. 38.1.9 × 4 — where does the decimal point go? (a) 7.6 (b) 76 (c) 0.76 (d) 0.076
39. 39.0.58 × 48 — where does the decimal point go? (a) 0.2784 (b) 27.84 (c) 278.4 (d) 2.784
40. 40.7.3 × 2.7 — where does the decimal point go? (a) 0.1971 (b) 1.971 (c) 197.1 (d) 19.71

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