Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 523 · 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. 1.1.3 × 1.6 — where does the decimal point go? (a) 0.208 (b) 2.08 (c) 20.8 (d) 0.0208
2. 2.0.34 × 0.9 — where does the decimal point go? (a) 0.306 (b) 0.00306 (c) 3.06 (d) 0.0306
3. 3.0.47 × 4 — where does the decimal point go? (a) 18.8 (b) 0.188 (c) 1.88 (d) 0.0188
4. 4.5.1 × 11 — where does the decimal point go? (a) 56.1 (b) 5.61 (c) 0.561 (d) 561
5. 5.0.13 × 35 — where does the decimal point go? (a) 0.455 (b) 45.5 (c) 0.0455 (d) 4.55
6. 6.7.8 × 0.8 — where does the decimal point go? (a) 0.0624 (b) 0.624 (c) 6.24 (d) 62.4
7. 7.0.79 × 0.9 — where does the decimal point go? (a) 0.0711 (b) 0.711 (c) 7.11 (d) 0.00711
8. 8.0.56 × 4 — where does the decimal point go? (a) 2.24 (b) 22.4 (c) 0.0224 (d) 0.224
9. 9.0.67 × 0.2 — where does the decimal point go? (a) 0.0134 (b) 0.00134 (c) 1.34 (d) 0.134
10. 10.0.81 × 23 — where does the decimal point go? (a) 18.63 (b) 0.1863 (c) 186.3 (d) 1.863
11. 11.5.6 × 7 — where does the decimal point go? (a) 39.2 (b) 0.392 (c) 3.92 (d) 392
12. 12.0.78 × 8 — where does the decimal point go? (a) 6.24 (b) 62.4 (c) 0.624 (d) 0.0624
13. 13.2.3 × 15 — where does the decimal point go? (a) 34.5 (b) 0.345 (c) 345 (d) 3.45
14. 14.3.4 × 7 — where does the decimal point go? (a) 2.38 (b) 23.8 (c) 0.238 (d) 238
15. 15.0.26 × 8 — where does the decimal point go? (a) 0.0208 (b) 0.208 (c) 20.8 (d) 2.08
16. 16.9.7 × 3 — where does the decimal point go? (a) 2.91 (b) 0.291 (c) 291 (d) 29.1
17. 17.9.2 × 9 — where does the decimal point go? (a) 0.828 (b) 82.8 (c) 828 (d) 8.28
18. 18.2.9 × 19 — where does the decimal point go? (a) 55.1 (b) 5.51 (c) 0.551 (d) 551
19. 19.0.32 × 21 — where does the decimal point go? (a) 0.672 (b) 67.2 (c) 0.0672 (d) 6.72
20. 20.2.6 × 1.2 — where does the decimal point go? (a) 3.12 (b) 0.0312 (c) 31.2 (d) 0.312
21. 21.8.6 × 22 — where does the decimal point go? (a) 189.2 (b) 1892 (c) 18.92 (d) 1.892
22. 22.1.2 × 6 — where does the decimal point go? (a) 72 (b) 0.072 (c) 0.72 (d) 7.2
23. 23.9.3 × 0.8 — where does the decimal point go? (a) 0.744 (b) 0.0744 (c) 7.44 (d) 74.4
24. 24.6.7 × 4 — where does the decimal point go? (a) 26.8 (b) 2.68 (c) 268 (d) 0.268
25. 25.6.8 × 19 — where does the decimal point go? (a) 1292 (b) 1.292 (c) 12.92 (d) 129.2
26. 26.9.7 × 2.3 — where does the decimal point go? (a) 223.1 (b) 22.31 (c) 2.231 (d) 0.2231
27. 27.0.26 × 46 — where does the decimal point go? (a) 119.6 (b) 11.96 (c) 0.1196 (d) 1.196
28. 28.0.19 × 1.4 — where does the decimal point go? (a) 2.66 (b) 0.0266 (c) 0.00266 (d) 0.266
29. 29.2.3 × 48 — where does the decimal point go? (a) 1.104 (b) 110.4 (c) 11.04 (d) 1104
30. 30.7.8 × 8 — where does the decimal point go? (a) 624 (b) 6.24 (c) 62.4 (d) 0.624
31. 31.4.4 × 8 — where does the decimal point go? (a) 35.2 (b) 0.352 (c) 352 (d) 3.52
32. 32.0.12 × 7 — where does the decimal point go? (a) 0.84 (b) 8.4 (c) 0.0084 (d) 0.084
33. 33.6.7 × 2.7 — where does the decimal point go? (a) 0.1809 (b) 18.09 (c) 180.9 (d) 1.809
34. 34.0.68 × 0.2 — where does the decimal point go? (a) 0.0136 (b) 0.00136 (c) 0.136 (d) 1.36
35. 35.1.6 × 0.6 — where does the decimal point go? (a) 0.096 (b) 0.96 (c) 9.6 (d) 0.0096
36. 36.6.2 × 28 — where does the decimal point go? (a) 1.736 (b) 1736 (c) 17.36 (d) 173.6
37. 37.1.8 × 47 — where does the decimal point go? (a) 8.46 (b) 0.846 (c) 846 (d) 84.6
38. 38.0.61 × 2.2 — where does the decimal point go? (a) 13.42 (b) 0.1342 (c) 1.342 (d) 0.01342
39. 39.5.7 × 9 — where does the decimal point go? (a) 51.3 (b) 0.513 (c) 5.13 (d) 513
40. 40.2.1 × 25 — where does the decimal point go? (a) 0.525 (b) 52.5 (c) 5.25 (d) 525

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