Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 758 · 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. 1.0.98 × 18 — where does the decimal point go? (a) 176.4 (b) 0.1764 (c) 1.764 (d) 17.64
2. 2.6.3 × 4.6 — where does the decimal point go? (a) 0.2898 (b) 289.8 (c) 28.98 (d) 2.898
3. 3.5.6 × 49 — where does the decimal point go? (a) 2.744 (b) 2744 (c) 274.4 (d) 27.44
4. 4.0.89 × 0.9 — where does the decimal point go? (a) 0.0801 (b) 0.801 (c) 8.01 (d) 0.00801
5. 5.0.53 × 0.4 — where does the decimal point go? (a) 0.0212 (b) 2.12 (c) 0.00212 (d) 0.212
6. 6.5.8 × 0.2 — where does the decimal point go? (a) 1.16 (b) 11.6 (c) 0.0116 (d) 0.116
7. 7.9.9 × 4 — where does the decimal point go? (a) 396 (b) 39.6 (c) 3.96 (d) 0.396
8. 8.0.93 × 0.9 — where does the decimal point go? (a) 0.837 (b) 8.37 (c) 0.00837 (d) 0.0837
9. 9.7.8 × 0.2 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 0.0156 (d) 15.6
10. 10.3.7 × 0.9 — where does the decimal point go? (a) 0.333 (b) 0.0333 (c) 3.33 (d) 33.3
11. 11.0.62 × 7 — where does the decimal point go? (a) 43.4 (b) 4.34 (c) 0.0434 (d) 0.434
12. 12.3.4 × 4.2 — where does the decimal point go? (a) 1.428 (b) 0.1428 (c) 142.8 (d) 14.28
13. 13.0.33 × 0.7 — where does the decimal point go? (a) 0.00231 (b) 0.231 (c) 2.31 (d) 0.0231
14. 14.2.1 × 9 — where does the decimal point go? (a) 1.89 (b) 189 (c) 18.9 (d) 0.189
15. 15.0.92 × 7 — where does the decimal point go? (a) 64.4 (b) 0.0644 (c) 0.644 (d) 6.44
16. 16.7.1 × 0.9 — where does the decimal point go? (a) 6.39 (b) 63.9 (c) 0.0639 (d) 0.639
17. 17.2.8 × 3.6 — where does the decimal point go? (a) 10.08 (b) 0.1008 (c) 100.8 (d) 1.008
18. 18.7.3 × 0.4 — where does the decimal point go? (a) 2.92 (b) 29.2 (c) 0.0292 (d) 0.292
19. 19.3.2 × 9 — where does the decimal point go? (a) 28.8 (b) 0.288 (c) 288 (d) 2.88
20. 20.3.9 × 0.8 — where does the decimal point go? (a) 3.12 (b) 0.0312 (c) 0.312 (d) 31.2
21. 21.6.8 × 4.2 — where does the decimal point go? (a) 0.2856 (b) 2.856 (c) 28.56 (d) 285.6
22. 22.1.4 × 18 — where does the decimal point go? (a) 0.252 (b) 2.52 (c) 25.2 (d) 252
23. 23.5.9 × 0.5 — where does the decimal point go? (a) 29.5 (b) 0.295 (c) 2.95 (d) 0.0295
24. 24.0.21 × 0.2 — where does the decimal point go? (a) 0.0042 (b) 0.42 (c) 0.00042 (d) 0.042
25. 25.0.29 × 4.1 — where does the decimal point go? (a) 0.1189 (b) 1.189 (c) 0.01189 (d) 11.89
26. 26.0.37 × 3 — where does the decimal point go? (a) 0.0111 (b) 1.11 (c) 0.111 (d) 11.1
27. 27.0.28 × 3 — where does the decimal point go? (a) 8.4 (b) 0.084 (c) 0.84 (d) 0.0084
28. 28.2.1 × 41 — where does the decimal point go? (a) 861 (b) 8.61 (c) 0.861 (d) 86.1
29. 29.4.7 × 0.7 — where does the decimal point go? (a) 0.329 (b) 3.29 (c) 32.9 (d) 0.0329
30. 30.0.21 × 3.8 — where does the decimal point go? (a) 0.00798 (b) 0.0798 (c) 0.798 (d) 7.98
31. 31.4.6 × 0.3 — where does the decimal point go? (a) 13.8 (b) 1.38 (c) 0.0138 (d) 0.138
32. 32.3.9 × 5 — where does the decimal point go? (a) 195 (b) 19.5 (c) 0.195 (d) 1.95
33. 33.0.66 × 8 — where does the decimal point go? (a) 52.8 (b) 0.0528 (c) 5.28 (d) 0.528
34. 34.5.8 × 8 — where does the decimal point go? (a) 46.4 (b) 0.464 (c) 4.64 (d) 464
35. 35.0.79 × 41 — where does the decimal point go? (a) 0.3239 (b) 32.39 (c) 3.239 (d) 323.9
36. 36.7.3 × 0.3 — where does the decimal point go? (a) 2.19 (b) 0.0219 (c) 0.219 (d) 21.9
37. 37.1.3 × 0.7 — where does the decimal point go? (a) 0.91 (b) 9.1 (c) 0.0091 (d) 0.091
38. 38.3.1 × 4.2 — where does the decimal point go? (a) 0.1302 (b) 130.2 (c) 13.02 (d) 1.302
39. 39.0.64 × 49 — where does the decimal point go? (a) 0.3136 (b) 31.36 (c) 3.136 (d) 313.6
40. 40.0.69 × 38 — where does the decimal point go? (a) 26.22 (b) 262.2 (c) 2.622 (d) 0.2622

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