Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 518 · 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. 1.3.9 × 2.4 — where does the decimal point go? (a) 9.36 (b) 0.0936 (c) 0.936 (d) 93.6
2. 2.0.29 × 22 — where does the decimal point go? (a) 0.0638 (b) 6.38 (c) 63.8 (d) 0.638
3. 3.8.7 × 16 — where does the decimal point go? (a) 1392 (b) 1.392 (c) 139.2 (d) 13.92
4. 4.0.87 × 4.4 — where does the decimal point go? (a) 3.828 (b) 0.03828 (c) 0.3828 (d) 38.28
5. 5.0.97 × 2.7 — where does the decimal point go? (a) 26.19 (b) 2.619 (c) 0.02619 (d) 0.2619
6. 6.0.19 × 28 — where does the decimal point go? (a) 0.0532 (b) 5.32 (c) 0.532 (d) 53.2
7. 7.0.87 × 0.8 — where does the decimal point go? (a) 0.696 (b) 6.96 (c) 0.00696 (d) 0.0696
8. 8.4.8 × 4 — where does the decimal point go? (a) 192 (b) 19.2 (c) 1.92 (d) 0.192
9. 9.1.8 × 7 — where does the decimal point go? (a) 0.126 (b) 126 (c) 12.6 (d) 1.26
10. 10.7.7 × 2.4 — where does the decimal point go? (a) 1.848 (b) 18.48 (c) 184.8 (d) 0.1848
11. 11.3.9 × 0.6 — where does the decimal point go? (a) 0.234 (b) 2.34 (c) 23.4 (d) 0.0234
12. 12.2.3 × 0.7 — where does the decimal point go? (a) 16.1 (b) 0.0161 (c) 0.161 (d) 1.61
13. 13.8.1 × 2.1 — where does the decimal point go? (a) 170.1 (b) 17.01 (c) 0.1701 (d) 1.701
14. 14.7.3 × 0.6 — where does the decimal point go? (a) 0.0438 (b) 43.8 (c) 0.438 (d) 4.38
15. 15.7.2 × 47 — where does the decimal point go? (a) 338.4 (b) 3.384 (c) 3384 (d) 33.84
16. 16.0.28 × 38 — where does the decimal point go? (a) 106.4 (b) 1.064 (c) 0.1064 (d) 10.64
17. 17.2.6 × 1.3 — where does the decimal point go? (a) 0.0338 (b) 3.38 (c) 33.8 (d) 0.338
18. 18.0.97 × 0.9 — where does the decimal point go? (a) 0.0873 (b) 0.873 (c) 0.00873 (d) 8.73
19. 19.3.3 × 0.9 — where does the decimal point go? (a) 29.7 (b) 0.297 (c) 2.97 (d) 0.0297
20. 20.0.67 × 1.4 — where does the decimal point go? (a) 0.0938 (b) 0.938 (c) 0.00938 (d) 9.38
21. 21.0.36 × 29 — where does the decimal point go? (a) 1.044 (b) 0.1044 (c) 10.44 (d) 104.4
22. 22.4.4 × 3.9 — where does the decimal point go? (a) 0.1716 (b) 1.716 (c) 171.6 (d) 17.16
23. 23.0.61 × 4.3 — where does the decimal point go? (a) 0.02623 (b) 2.623 (c) 26.23 (d) 0.2623
24. 24.3.6 × 3.7 — where does the decimal point go? (a) 1.332 (b) 133.2 (c) 13.32 (d) 0.1332
25. 25.0.28 × 14 — where does the decimal point go? (a) 0.392 (b) 39.2 (c) 0.0392 (d) 3.92
26. 26.0.25 × 0.5 — where does the decimal point go? (a) 0.0125 (b) 1.25 (c) 0.00125 (d) 0.125
27. 27.0.23 × 2 — where does the decimal point go? (a) 0.0046 (b) 0.46 (c) 4.6 (d) 0.046
28. 28.0.54 × 0.4 — where does the decimal point go? (a) 2.16 (b) 0.216 (c) 0.00216 (d) 0.0216
29. 29.5.7 × 0.8 — where does the decimal point go? (a) 0.0456 (b) 4.56 (c) 45.6 (d) 0.456
30. 30.0.23 × 0.2 — where does the decimal point go? (a) 0.0046 (b) 0.46 (c) 0.00046 (d) 0.046
31. 31.0.91 × 9 — where does the decimal point go? (a) 81.9 (b) 0.0819 (c) 0.819 (d) 8.19
32. 32.0.84 × 8 — where does the decimal point go? (a) 0.672 (b) 67.2 (c) 0.0672 (d) 6.72
33. 33.4.7 × 42 — where does the decimal point go? (a) 1974 (b) 19.74 (c) 1.974 (d) 197.4
34. 34.3.3 × 2 — where does the decimal point go? (a) 0.066 (b) 66 (c) 0.66 (d) 6.6
35. 35.0.96 × 0.8 — where does the decimal point go? (a) 7.68 (b) 0.768 (c) 0.0768 (d) 0.00768
36. 36.7.2 × 2 — where does the decimal point go? (a) 144 (b) 1.44 (c) 14.4 (d) 0.144
37. 37.1.9 × 0.3 — where does the decimal point go? (a) 5.7 (b) 0.57 (c) 0.0057 (d) 0.057
38. 38.9.1 × 3 — where does the decimal point go? (a) 0.273 (b) 273 (c) 2.73 (d) 27.3
39. 39.9.3 × 1.3 — where does the decimal point go? (a) 0.1209 (b) 120.9 (c) 12.09 (d) 1.209
40. 40.4.3 × 35 — where does the decimal point go? (a) 1.505 (b) 1505 (c) 15.05 (d) 150.5

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