Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 723 · 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. 1.9.4 × 0.9 — where does the decimal point go? (a) 0.0846 (b) 0.846 (c) 8.46 (d) 84.6
2. 2.0.12 × 0.4 — where does the decimal point go? (a) 0.00048 (b) 0.48 (c) 0.0048 (d) 0.048
3. 3.7.1 × 2.8 — where does the decimal point go? (a) 19.88 (b) 0.1988 (c) 1.988 (d) 198.8
4. 4.5.9 × 23 — where does the decimal point go? (a) 1.357 (b) 13.57 (c) 135.7 (d) 1357
5. 5.4.4 × 0.2 — where does the decimal point go? (a) 0.0088 (b) 0.88 (c) 8.8 (d) 0.088
6. 6.3.6 × 0.4 — where does the decimal point go? (a) 0.0144 (b) 14.4 (c) 1.44 (d) 0.144
7. 7.0.98 × 3 — where does the decimal point go? (a) 0.0294 (b) 2.94 (c) 29.4 (d) 0.294
8. 8.6.4 × 0.3 — where does the decimal point go? (a) 1.92 (b) 0.192 (c) 0.0192 (d) 19.2
9. 9.0.84 × 1.4 — where does the decimal point go? (a) 1.176 (b) 0.1176 (c) 0.01176 (d) 11.76
10. 10.0.68 × 2.3 — where does the decimal point go? (a) 1.564 (b) 0.01564 (c) 15.64 (d) 0.1564
11. 11.3.8 × 0.2 — where does the decimal point go? (a) 0.76 (b) 7.6 (c) 0.0076 (d) 0.076
12. 12.3.6 × 21 — where does the decimal point go? (a) 7.56 (b) 0.756 (c) 756 (d) 75.6
13. 13.1.2 × 4.4 — where does the decimal point go? (a) 0.528 (b) 52.8 (c) 0.0528 (d) 5.28
14. 14.3.1 × 13 — where does the decimal point go? (a) 40.3 (b) 4.03 (c) 0.403 (d) 403
15. 15.0.68 × 9 — where does the decimal point go? (a) 6.12 (b) 0.612 (c) 0.0612 (d) 61.2
16. 16.0.63 × 0.9 — where does the decimal point go? (a) 0.00567 (b) 0.567 (c) 0.0567 (d) 5.67
17. 17.0.55 × 0.5 — where does the decimal point go? (a) 2.75 (b) 0.0275 (c) 0.275 (d) 0.00275
18. 18.4.3 × 5 — where does the decimal point go? (a) 21.5 (b) 0.215 (c) 2.15 (d) 215
19. 19.0.22 × 47 — where does the decimal point go? (a) 10.34 (b) 0.1034 (c) 1.034 (d) 103.4
20. 20.5.6 × 8 — where does the decimal point go? (a) 0.448 (b) 44.8 (c) 4.48 (d) 448
21. 21.0.37 × 4.4 — where does the decimal point go? (a) 0.1628 (b) 0.01628 (c) 1.628 (d) 16.28
22. 22.0.79 × 3.4 — where does the decimal point go? (a) 0.2686 (b) 0.02686 (c) 2.686 (d) 26.86
23. 23.9.4 × 42 — where does the decimal point go? (a) 394.8 (b) 39.48 (c) 3.948 (d) 3948
24. 24.2.6 × 4 — where does the decimal point go? (a) 0.104 (b) 104 (c) 10.4 (d) 1.04
25. 25.0.42 × 17 — where does the decimal point go? (a) 0.714 (b) 71.4 (c) 7.14 (d) 0.0714
26. 26.0.24 × 0.7 — where does the decimal point go? (a) 0.0168 (b) 0.168 (c) 1.68 (d) 0.00168
27. 27.7.1 × 0.9 — where does the decimal point go? (a) 0.0639 (b) 6.39 (c) 0.639 (d) 63.9
28. 28.3.8 × 3 — where does the decimal point go? (a) 0.114 (b) 1.14 (c) 11.4 (d) 114
29. 29.3.3 × 0.9 — where does the decimal point go? (a) 2.97 (b) 0.297 (c) 0.0297 (d) 29.7
30. 30.9.7 × 7 — where does the decimal point go? (a) 0.679 (b) 67.9 (c) 6.79 (d) 679
31. 31.5.7 × 4 — where does the decimal point go? (a) 22.8 (b) 2.28 (c) 0.228 (d) 228
32. 32.0.24 × 0.9 — where does the decimal point go? (a) 0.216 (b) 2.16 (c) 0.0216 (d) 0.00216
33. 33.0.96 × 24 — where does the decimal point go? (a) 2.304 (b) 0.2304 (c) 230.4 (d) 23.04
34. 34.4.1 × 0.9 — where does the decimal point go? (a) 36.9 (b) 3.69 (c) 0.369 (d) 0.0369
35. 35.2.1 × 3 — where does the decimal point go? (a) 0.63 (b) 6.3 (c) 0.063 (d) 63
36. 36.0.17 × 4.7 — where does the decimal point go? (a) 0.799 (b) 0.0799 (c) 0.00799 (d) 7.99
37. 37.7.9 × 2.3 — where does the decimal point go? (a) 0.1817 (b) 181.7 (c) 18.17 (d) 1.817
38. 38.0.68 × 0.4 — where does the decimal point go? (a) 0.00272 (b) 0.0272 (c) 0.272 (d) 2.72
39. 39.0.39 × 1.5 — where does the decimal point go? (a) 5.85 (b) 0.585 (c) 0.00585 (d) 0.0585
40. 40.1.8 × 6 — where does the decimal point go? (a) 0.108 (b) 10.8 (c) 1.08 (d) 108

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