Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 392 · 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. 1.5.6 × 4.4 — where does the decimal point go? (a) 0.2464 (b) 24.64 (c) 246.4 (d) 2.464
2. 2.8.2 × 4.7 — where does the decimal point go? (a) 38.54 (b) 385.4 (c) 0.3854 (d) 3.854
3. 3.0.42 × 0.2 — where does the decimal point go? (a) 0.84 (b) 0.00084 (c) 0.0084 (d) 0.084
4. 4.1.5 × 0.3 — where does the decimal point go? (a) 0.0045 (b) 0.45 (c) 4.5 (d) 0.045
5. 5.2.6 × 13 — where does the decimal point go? (a) 3.38 (b) 0.338 (c) 338 (d) 33.8
6. 6.3.4 × 0.4 — where does the decimal point go? (a) 13.6 (b) 1.36 (c) 0.0136 (d) 0.136
7. 7.3.6 × 8 — where does the decimal point go? (a) 288 (b) 2.88 (c) 28.8 (d) 0.288
8. 8.0.67 × 2.8 — where does the decimal point go? (a) 0.1876 (b) 18.76 (c) 1.876 (d) 0.01876
9. 9.0.85 × 17 — where does the decimal point go? (a) 0.1445 (b) 14.45 (c) 144.5 (d) 1.445
10. 10.4.9 × 2.5 — where does the decimal point go? (a) 122.5 (b) 0.1225 (c) 12.25 (d) 1.225
11. 11.2.7 × 4.8 — where does the decimal point go? (a) 0.1296 (b) 129.6 (c) 1.296 (d) 12.96
12. 12.3.6 × 22 — where does the decimal point go? (a) 792 (b) 7.92 (c) 0.792 (d) 79.2
13. 13.1.3 × 21 — where does the decimal point go? (a) 0.273 (b) 2.73 (c) 27.3 (d) 273
14. 14.3.2 × 4 — where does the decimal point go? (a) 0.128 (b) 12.8 (c) 128 (d) 1.28
15. 15.0.67 × 1.8 — where does the decimal point go? (a) 1.206 (b) 0.1206 (c) 0.01206 (d) 12.06
16. 16.2.7 × 1.1 — where does the decimal point go? (a) 2.97 (b) 29.7 (c) 0.0297 (d) 0.297
17. 17.0.86 × 0.3 — where does the decimal point go? (a) 2.58 (b) 0.0258 (c) 0.00258 (d) 0.258
18. 18.0.56 × 0.3 — where does the decimal point go? (a) 0.00168 (b) 1.68 (c) 0.168 (d) 0.0168
19. 19.0.64 × 11 — where does the decimal point go? (a) 0.0704 (b) 0.704 (c) 70.4 (d) 7.04
20. 20.6.8 × 19 — where does the decimal point go? (a) 12.92 (b) 1292 (c) 129.2 (d) 1.292
21. 21.0.41 × 0.6 — where does the decimal point go? (a) 0.00246 (b) 2.46 (c) 0.246 (d) 0.0246
22. 22.0.53 × 13 — where does the decimal point go? (a) 0.0689 (b) 68.9 (c) 0.689 (d) 6.89
23. 23.8.2 × 13 — where does the decimal point go? (a) 106.6 (b) 10.66 (c) 1066 (d) 1.066
24. 24.7.9 × 0.5 — where does the decimal point go? (a) 39.5 (b) 0.395 (c) 3.95 (d) 0.0395
25. 25.2.2 × 26 — where does the decimal point go? (a) 57.2 (b) 572 (c) 0.572 (d) 5.72
26. 26.3.7 × 1.1 — where does the decimal point go? (a) 40.7 (b) 0.0407 (c) 4.07 (d) 0.407
27. 27.9.6 × 0.7 — where does the decimal point go? (a) 67.2 (b) 6.72 (c) 0.0672 (d) 0.672
28. 28.0.13 × 2 — where does the decimal point go? (a) 0.0026 (b) 0.026 (c) 2.6 (d) 0.26
29. 29.3.2 × 3.1 — where does the decimal point go? (a) 9.92 (b) 0.0992 (c) 99.2 (d) 0.992
30. 30.4.7 × 0.4 — where does the decimal point go? (a) 0.188 (b) 1.88 (c) 0.0188 (d) 18.8
31. 31.2.1 × 4.7 — where does the decimal point go? (a) 0.0987 (b) 9.87 (c) 0.987 (d) 98.7
32. 32.0.67 × 0.2 — where does the decimal point go? (a) 1.34 (b) 0.0134 (c) 0.00134 (d) 0.134
33. 33.2.2 × 36 — where does the decimal point go? (a) 0.792 (b) 79.2 (c) 792 (d) 7.92
34. 34.0.13 × 3.7 — where does the decimal point go? (a) 4.81 (b) 0.481 (c) 0.00481 (d) 0.0481
35. 35.6.3 × 0.6 — where does the decimal point go? (a) 3.78 (b) 37.8 (c) 0.0378 (d) 0.378
36. 36.4.7 × 9 — where does the decimal point go? (a) 42.3 (b) 423 (c) 4.23 (d) 0.423
37. 37.0.65 × 0.3 — where does the decimal point go? (a) 0.00195 (b) 0.195 (c) 0.0195 (d) 1.95
38. 38.4.1 × 3 — where does the decimal point go? (a) 12.3 (b) 123 (c) 0.123 (d) 1.23
39. 39.0.44 × 22 — where does the decimal point go? (a) 0.968 (b) 0.0968 (c) 9.68 (d) 96.8
40. 40.2.5 × 0.9 — where does the decimal point go? (a) 0.225 (b) 22.5 (c) 0.0225 (d) 2.25

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