Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 919 · 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. 1.2.8 × 0.8 — where does the decimal point go? (a) 2.24 (b) 0.0224 (c) 0.224 (d) 22.4
2. 2.0.73 × 21 — where does the decimal point go? (a) 1.533 (b) 15.33 (c) 153.3 (d) 0.1533
3. 3.2.7 × 5 — where does the decimal point go? (a) 13.5 (b) 1.35 (c) 135 (d) 0.135
4. 4.0.94 × 2.9 — where does the decimal point go? (a) 0.2726 (b) 0.02726 (c) 2.726 (d) 27.26
5. 5.6.5 × 47 — where does the decimal point go? (a) 3055 (b) 3.055 (c) 30.55 (d) 305.5
6. 6.0.28 × 9 — where does the decimal point go? (a) 2.52 (b) 0.0252 (c) 0.252 (d) 25.2
7. 7.5.5 × 21 — where does the decimal point go? (a) 1.155 (b) 115.5 (c) 11.55 (d) 1155
8. 8.0.48 × 0.9 — where does the decimal point go? (a) 4.32 (b) 0.0432 (c) 0.432 (d) 0.00432
9. 9.0.99 × 0.3 — where does the decimal point go? (a) 0.0297 (b) 0.297 (c) 2.97 (d) 0.00297
10. 10.9.6 × 44 — where does the decimal point go? (a) 422.4 (b) 4.224 (c) 4224 (d) 42.24
11. 11.5.8 × 0.6 — where does the decimal point go? (a) 34.8 (b) 0.0348 (c) 0.348 (d) 3.48
12. 12.6.3 × 6 — where does the decimal point go? (a) 3.78 (b) 378 (c) 0.378 (d) 37.8
13. 13.0.98 × 1.4 — where does the decimal point go? (a) 0.01372 (b) 1.372 (c) 0.1372 (d) 13.72
14. 14.0.98 × 17 — where does the decimal point go? (a) 1.666 (b) 16.66 (c) 166.6 (d) 0.1666
15. 15.0.82 × 17 — where does the decimal point go? (a) 13.94 (b) 1.394 (c) 0.1394 (d) 139.4
16. 16.1.8 × 1.4 — where does the decimal point go? (a) 0.252 (b) 25.2 (c) 0.0252 (d) 2.52
17. 17.7.1 × 16 — where does the decimal point go? (a) 1.136 (b) 113.6 (c) 11.36 (d) 1136
18. 18.0.54 × 7 — where does the decimal point go? (a) 3.78 (b) 0.378 (c) 37.8 (d) 0.0378
19. 19.1.9 × 0.9 — where does the decimal point go? (a) 1.71 (b) 0.171 (c) 0.0171 (d) 17.1
20. 20.8.7 × 3.1 — where does the decimal point go? (a) 0.2697 (b) 269.7 (c) 2.697 (d) 26.97
21. 21.2.9 × 1.8 — where does the decimal point go? (a) 5.22 (b) 52.2 (c) 0.0522 (d) 0.522
22. 22.0.47 × 9 — where does the decimal point go? (a) 0.0423 (b) 0.423 (c) 42.3 (d) 4.23
23. 23.2.7 × 42 — where does the decimal point go? (a) 11.34 (b) 113.4 (c) 1.134 (d) 1134
24. 24.0.45 × 0.5 — where does the decimal point go? (a) 0.00225 (b) 0.0225 (c) 2.25 (d) 0.225
25. 25.0.17 × 5 — where does the decimal point go? (a) 0.85 (b) 0.0085 (c) 0.085 (d) 8.5
26. 26.0.59 × 0.7 — where does the decimal point go? (a) 0.00413 (b) 4.13 (c) 0.0413 (d) 0.413
27. 27.4.4 × 0.4 — where does the decimal point go? (a) 17.6 (b) 1.76 (c) 0.176 (d) 0.0176
28. 28.0.21 × 9 — where does the decimal point go? (a) 0.189 (b) 1.89 (c) 0.0189 (d) 18.9
29. 29.7.3 × 37 — where does the decimal point go? (a) 2701 (b) 270.1 (c) 2.701 (d) 27.01
30. 30.0.23 × 42 — where does the decimal point go? (a) 9.66 (b) 0.966 (c) 0.0966 (d) 96.6
31. 31.0.99 × 1.1 — where does the decimal point go? (a) 0.01089 (b) 0.1089 (c) 1.089 (d) 10.89
32. 32.8.3 × 3.4 — where does the decimal point go? (a) 28.22 (b) 0.2822 (c) 2.822 (d) 282.2
33. 33.5.5 × 0.3 — where does the decimal point go? (a) 0.0165 (b) 1.65 (c) 16.5 (d) 0.165
34. 34.0.86 × 13 — where does the decimal point go? (a) 0.1118 (b) 1.118 (c) 111.8 (d) 11.18
35. 35.5.1 × 0.2 — where does the decimal point go? (a) 1.02 (b) 0.102 (c) 10.2 (d) 0.0102
36. 36.0.99 × 9 — where does the decimal point go? (a) 8.91 (b) 0.0891 (c) 0.891 (d) 89.1
37. 37.3.4 × 0.9 — where does the decimal point go? (a) 30.6 (b) 0.306 (c) 3.06 (d) 0.0306
38. 38.9.7 × 4.2 — where does the decimal point go? (a) 40.74 (b) 0.4074 (c) 407.4 (d) 4.074
39. 39.0.59 × 4.5 — where does the decimal point go? (a) 0.2655 (b) 2.655 (c) 26.55 (d) 0.02655
40. 40.8.6 × 3.4 — where does the decimal point go? (a) 292.4 (b) 2.924 (c) 0.2924 (d) 29.24

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