Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 373 · 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. 1.0.29 × 0.5 — where does the decimal point go? (a) 0.00145 (b) 0.0145 (c) 0.145 (d) 1.45
2. 2.0.91 × 0.7 — where does the decimal point go? (a) 0.00637 (b) 0.637 (c) 0.0637 (d) 6.37
3. 3.0.44 × 3 — where does the decimal point go? (a) 13.2 (b) 0.0132 (c) 0.132 (d) 1.32
4. 4.0.61 × 5 — where does the decimal point go? (a) 0.0305 (b) 0.305 (c) 3.05 (d) 30.5
5. 5.9.8 × 2 — where does the decimal point go? (a) 196 (b) 19.6 (c) 0.196 (d) 1.96
6. 6.5.8 × 0.6 — where does the decimal point go? (a) 0.348 (b) 3.48 (c) 0.0348 (d) 34.8
7. 7.4.4 × 17 — where does the decimal point go? (a) 7.48 (b) 74.8 (c) 748 (d) 0.748
8. 8.6.3 × 0.8 — where does the decimal point go? (a) 50.4 (b) 5.04 (c) 0.0504 (d) 0.504
9. 9.0.35 × 3.7 — where does the decimal point go? (a) 0.01295 (b) 12.95 (c) 1.295 (d) 0.1295
10. 10.8.1 × 2.6 — where does the decimal point go? (a) 0.2106 (b) 21.06 (c) 210.6 (d) 2.106
11. 11.2.1 × 6 — where does the decimal point go? (a) 1.26 (b) 0.126 (c) 126 (d) 12.6
12. 12.0.47 × 2.1 — where does the decimal point go? (a) 0.00987 (b) 0.987 (c) 9.87 (d) 0.0987
13. 13.9.3 × 8 — where does the decimal point go? (a) 0.744 (b) 7.44 (c) 744 (d) 74.4
14. 14.4.6 × 37 — where does the decimal point go? (a) 17.02 (b) 170.2 (c) 1702 (d) 1.702
15. 15.5.8 × 0.2 — where does the decimal point go? (a) 1.16 (b) 11.6 (c) 0.0116 (d) 0.116
16. 16.0.58 × 2 — where does the decimal point go? (a) 0.116 (b) 11.6 (c) 1.16 (d) 0.0116
17. 17.3.3 × 15 — where does the decimal point go? (a) 0.495 (b) 49.5 (c) 4.95 (d) 495
18. 18.5.3 × 0.3 — where does the decimal point go? (a) 1.59 (b) 0.0159 (c) 15.9 (d) 0.159
19. 19.5.3 × 2 — where does the decimal point go? (a) 0.106 (b) 1.06 (c) 10.6 (d) 106
20. 20.2.6 × 0.3 — where does the decimal point go? (a) 0.78 (b) 0.0078 (c) 7.8 (d) 0.078
21. 21.7.2 × 3 — where does the decimal point go? (a) 0.216 (b) 21.6 (c) 216 (d) 2.16
22. 22.0.55 × 0.3 — where does the decimal point go? (a) 0.165 (b) 0.0165 (c) 0.00165 (d) 1.65
23. 23.0.37 × 12 — where does the decimal point go? (a) 44.4 (b) 0.0444 (c) 0.444 (d) 4.44
24. 24.0.67 × 32 — where does the decimal point go? (a) 214.4 (b) 2.144 (c) 0.2144 (d) 21.44
25. 25.3.4 × 0.4 — where does the decimal point go? (a) 0.0136 (b) 0.136 (c) 1.36 (d) 13.6
26. 26.0.67 × 24 — where does the decimal point go? (a) 160.8 (b) 0.1608 (c) 16.08 (d) 1.608
27. 27.0.34 × 3 — where does the decimal point go? (a) 10.2 (b) 0.102 (c) 0.0102 (d) 1.02
28. 28.3.7 × 5 — where does the decimal point go? (a) 0.185 (b) 18.5 (c) 1.85 (d) 185
29. 29.0.34 × 0.8 — where does the decimal point go? (a) 2.72 (b) 0.0272 (c) 0.00272 (d) 0.272
30. 30.0.36 × 29 — where does the decimal point go? (a) 1.044 (b) 0.1044 (c) 104.4 (d) 10.44
31. 31.3.8 × 9 — where does the decimal point go? (a) 34.2 (b) 3.42 (c) 0.342 (d) 342
32. 32.3.6 × 0.2 — where does the decimal point go? (a) 0.72 (b) 7.2 (c) 0.0072 (d) 0.072
33. 33.0.25 × 0.9 — where does the decimal point go? (a) 2.25 (b) 0.225 (c) 0.00225 (d) 0.0225
34. 34.5.2 × 26 — where does the decimal point go? (a) 135.2 (b) 1352 (c) 1.352 (d) 13.52
35. 35.0.52 × 0.7 — where does the decimal point go? (a) 0.0364 (b) 0.00364 (c) 0.364 (d) 3.64
36. 36.0.69 × 16 — where does the decimal point go? (a) 11.04 (b) 0.1104 (c) 1.104 (d) 110.4
37. 37.7.9 × 4.2 — where does the decimal point go? (a) 33.18 (b) 0.3318 (c) 331.8 (d) 3.318
38. 38.0.98 × 6 — where does the decimal point go? (a) 0.588 (b) 5.88 (c) 0.0588 (d) 58.8
39. 39.2.6 × 0.4 — where does the decimal point go? (a) 1.04 (b) 0.104 (c) 10.4 (d) 0.0104
40. 40.6.4 × 0.3 — where does the decimal point go? (a) 0.0192 (b) 0.192 (c) 19.2 (d) 1.92

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