Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 86 · 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. 1.2.9 × 13 — where does the decimal point go? (a) 3.77 (b) 0.377 (c) 377 (d) 37.7
2. 2.0.81 × 11 — where does the decimal point go? (a) 0.0891 (b) 8.91 (c) 0.891 (d) 89.1
3. 3.3.8 × 33 — where does the decimal point go? (a) 125.4 (b) 12.54 (c) 1254 (d) 1.254
4. 4.3.7 × 5 — where does the decimal point go? (a) 0.185 (b) 18.5 (c) 1.85 (d) 185
5. 5.8.3 × 8 — where does the decimal point go? (a) 664 (b) 66.4 (c) 6.64 (d) 0.664
6. 6.0.96 × 3 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 0.0288 (d) 28.8
7. 7.0.22 × 18 — where does the decimal point go? (a) 0.0396 (b) 0.396 (c) 3.96 (d) 39.6
8. 8.0.23 × 18 — where does the decimal point go? (a) 0.0414 (b) 41.4 (c) 4.14 (d) 0.414
9. 9.0.96 × 0.8 — where does the decimal point go? (a) 0.0768 (b) 0.768 (c) 7.68 (d) 0.00768
10. 10.4.9 × 2 — where does the decimal point go? (a) 0.98 (b) 0.098 (c) 98 (d) 9.8
11. 11.7.4 × 0.6 — where does the decimal point go? (a) 44.4 (b) 4.44 (c) 0.0444 (d) 0.444
12. 12.3.3 × 4 — where does the decimal point go? (a) 13.2 (b) 1.32 (c) 132 (d) 0.132
13. 13.0.16 × 4.8 — where does the decimal point go? (a) 0.0768 (b) 0.00768 (c) 7.68 (d) 0.768
14. 14.1.3 × 4.6 — where does the decimal point go? (a) 5.98 (b) 59.8 (c) 0.0598 (d) 0.598
15. 15.7.4 × 0.8 — where does the decimal point go? (a) 5.92 (b) 59.2 (c) 0.592 (d) 0.0592
16. 16.9.9 × 3.9 — where does the decimal point go? (a) 0.3861 (b) 38.61 (c) 3.861 (d) 386.1
17. 17.6.7 × 32 — where does the decimal point go? (a) 214.4 (b) 2.144 (c) 2144 (d) 21.44
18. 18.0.66 × 14 — where does the decimal point go? (a) 92.4 (b) 0.0924 (c) 9.24 (d) 0.924
19. 19.0.41 × 2.2 — where does the decimal point go? (a) 9.02 (b) 0.0902 (c) 0.902 (d) 0.00902
20. 20.0.87 × 36 — where does the decimal point go? (a) 313.2 (b) 3.132 (c) 31.32 (d) 0.3132
21. 21.4.4 × 7 — where does the decimal point go? (a) 308 (b) 3.08 (c) 0.308 (d) 30.8
22. 22.1.7 × 43 — where does the decimal point go? (a) 73.1 (b) 7.31 (c) 731 (d) 0.731
23. 23.0.34 × 1.6 — where does the decimal point go? (a) 5.44 (b) 0.0544 (c) 0.00544 (d) 0.544
24. 24.6.5 × 7 — where does the decimal point go? (a) 4.55 (b) 45.5 (c) 455 (d) 0.455
25. 25.0.51 × 13 — where does the decimal point go? (a) 0.663 (b) 0.0663 (c) 66.3 (d) 6.63
26. 26.0.85 × 17 — where does the decimal point go? (a) 14.45 (b) 1.445 (c) 0.1445 (d) 144.5
27. 27.4.3 × 0.8 — where does the decimal point go? (a) 0.344 (b) 3.44 (c) 34.4 (d) 0.0344
28. 28.7.6 × 2.7 — where does the decimal point go? (a) 205.2 (b) 2.052 (c) 20.52 (d) 0.2052
29. 29.0.69 × 3 — where does the decimal point go? (a) 0.207 (b) 20.7 (c) 2.07 (d) 0.0207
30. 30.0.92 × 9 — where does the decimal point go? (a) 0.828 (b) 82.8 (c) 8.28 (d) 0.0828
31. 31.0.67 × 0.7 — where does the decimal point go? (a) 0.469 (b) 4.69 (c) 0.00469 (d) 0.0469
32. 32.0.99 × 5 — where does the decimal point go? (a) 0.495 (b) 4.95 (c) 0.0495 (d) 49.5
33. 33.2.8 × 1.6 — where does the decimal point go? (a) 44.8 (b) 0.0448 (c) 0.448 (d) 4.48
34. 34.8.6 × 49 — where does the decimal point go? (a) 42.14 (b) 421.4 (c) 4.214 (d) 4214
35. 35.5.8 × 19 — where does the decimal point go? (a) 11.02 (b) 1102 (c) 1.102 (d) 110.2
36. 36.5.9 × 0.9 — where does the decimal point go? (a) 0.531 (b) 53.1 (c) 5.31 (d) 0.0531
37. 37.6.7 × 6 — where does the decimal point go? (a) 4.02 (b) 402 (c) 0.402 (d) 40.2
38. 38.0.83 × 0.8 — where does the decimal point go? (a) 6.64 (b) 0.664 (c) 0.00664 (d) 0.0664
39. 39.4.1 × 26 — where does the decimal point go? (a) 1.066 (b) 10.66 (c) 106.6 (d) 1066
40. 40.4.3 × 0.5 — where does the decimal point go? (a) 0.215 (b) 2.15 (c) 0.0215 (d) 21.5

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