Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 228 · 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. 1.0.23 × 44 — where does the decimal point go? (a) 10.12 (b) 0.1012 (c) 101.2 (d) 1.012
2. 2.0.34 × 0.4 — where does the decimal point go? (a) 0.0136 (b) 1.36 (c) 0.136 (d) 0.00136
3. 3.0.24 × 4 — where does the decimal point go? (a) 0.96 (b) 9.6 (c) 0.096 (d) 0.0096
4. 4.0.57 × 5 — where does the decimal point go? (a) 28.5 (b) 0.285 (c) 0.0285 (d) 2.85
5. 5.3.7 × 0.3 — where does the decimal point go? (a) 11.1 (b) 1.11 (c) 0.111 (d) 0.0111
6. 6.2.2 × 23 — where does the decimal point go? (a) 0.506 (b) 506 (c) 5.06 (d) 50.6
7. 7.2.2 × 2.9 — where does the decimal point go? (a) 0.0638 (b) 6.38 (c) 0.638 (d) 63.8
8. 8.0.84 × 0.8 — where does the decimal point go? (a) 0.00672 (b) 0.672 (c) 0.0672 (d) 6.72
9. 9.0.63 × 1.8 — where does the decimal point go? (a) 0.1134 (b) 1.134 (c) 0.01134 (d) 11.34
10. 10.5.5 × 9 — where does the decimal point go? (a) 49.5 (b) 0.495 (c) 4.95 (d) 495
11. 11.2.7 × 3.1 — where does the decimal point go? (a) 0.0837 (b) 8.37 (c) 0.837 (d) 83.7
12. 12.4.4 × 0.8 — where does the decimal point go? (a) 3.52 (b) 0.0352 (c) 35.2 (d) 0.352
13. 13.6.1 × 3.5 — where does the decimal point go? (a) 0.2135 (b) 21.35 (c) 213.5 (d) 2.135
14. 14.0.32 × 6 — where does the decimal point go? (a) 1.92 (b) 0.192 (c) 19.2 (d) 0.0192
15. 15.2.8 × 0.3 — where does the decimal point go? (a) 0.084 (b) 8.4 (c) 0.84 (d) 0.0084
16. 16.0.38 × 2.8 — where does the decimal point go? (a) 10.64 (b) 1.064 (c) 0.1064 (d) 0.01064
17. 17.0.29 × 1.9 — where does the decimal point go? (a) 0.00551 (b) 0.551 (c) 5.51 (d) 0.0551
18. 18.6.8 × 7 — where does the decimal point go? (a) 47.6 (b) 476 (c) 4.76 (d) 0.476
19. 19.0.18 × 18 — where does the decimal point go? (a) 0.0324 (b) 0.324 (c) 32.4 (d) 3.24
20. 20.9.1 × 46 — where does the decimal point go? (a) 418.6 (b) 4.186 (c) 41.86 (d) 4186
21. 21.0.16 × 4 — where does the decimal point go? (a) 0.064 (b) 0.0064 (c) 0.64 (d) 6.4
22. 22.0.79 × 35 — where does the decimal point go? (a) 2.765 (b) 0.2765 (c) 27.65 (d) 276.5
23. 23.0.98 × 9 — where does the decimal point go? (a) 0.0882 (b) 8.82 (c) 88.2 (d) 0.882
24. 24.4.4 × 0.6 — where does the decimal point go? (a) 0.264 (b) 0.0264 (c) 2.64 (d) 26.4
25. 25.6.5 × 3.3 — where does the decimal point go? (a) 2.145 (b) 214.5 (c) 0.2145 (d) 21.45
26. 26.6.3 × 8 — where does the decimal point go? (a) 504 (b) 0.504 (c) 5.04 (d) 50.4
27. 27.2.3 × 0.8 — where does the decimal point go? (a) 18.4 (b) 1.84 (c) 0.0184 (d) 0.184
28. 28.6.4 × 4.6 — where does the decimal point go? (a) 0.2944 (b) 294.4 (c) 2.944 (d) 29.44
29. 29.3.5 × 0.7 — where does the decimal point go? (a) 24.5 (b) 0.245 (c) 0.0245 (d) 2.45
30. 30.3.7 × 22 — where does the decimal point go? (a) 81.4 (b) 814 (c) 0.814 (d) 8.14
31. 31.9.8 × 0.9 — where does the decimal point go? (a) 8.82 (b) 88.2 (c) 0.882 (d) 0.0882
32. 32.0.93 × 28 — where does the decimal point go? (a) 260.4 (b) 0.2604 (c) 26.04 (d) 2.604
33. 33.0.46 × 41 — where does the decimal point go? (a) 0.1886 (b) 1.886 (c) 18.86 (d) 188.6
34. 34.2.5 × 7 — where does the decimal point go? (a) 1.75 (b) 17.5 (c) 0.175 (d) 175
35. 35.6.5 × 0.3 — where does the decimal point go? (a) 0.195 (b) 19.5 (c) 0.0195 (d) 1.95
36. 36.0.58 × 4.8 — where does the decimal point go? (a) 2.784 (b) 0.2784 (c) 0.02784 (d) 27.84
37. 37.1.5 × 17 — where does the decimal point go? (a) 2.55 (b) 255 (c) 0.255 (d) 25.5
38. 38.1.9 × 14 — where does the decimal point go? (a) 2.66 (b) 26.6 (c) 266 (d) 0.266
39. 39.2.9 × 1.3 — where does the decimal point go? (a) 0.377 (b) 0.0377 (c) 3.77 (d) 37.7
40. 40.7.2 × 41 — where does the decimal point go? (a) 2.952 (b) 29.52 (c) 295.2 (d) 2952

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