Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 192 · 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. 1.0.78 × 0.6 — where does the decimal point go? (a) 4.68 (b) 0.468 (c) 0.00468 (d) 0.0468
2. 2.6.8 × 9 — where does the decimal point go? (a) 6.12 (b) 0.612 (c) 612 (d) 61.2
3. 3.2.8 × 3.4 — where does the decimal point go? (a) 0.0952 (b) 9.52 (c) 95.2 (d) 0.952
4. 4.1.8 × 13 — where does the decimal point go? (a) 23.4 (b) 2.34 (c) 0.234 (d) 234
5. 5.9.3 × 2 — where does the decimal point go? (a) 18.6 (b) 186 (c) 0.186 (d) 1.86
6. 6.0.71 × 2.8 — where does the decimal point go? (a) 19.88 (b) 0.1988 (c) 0.01988 (d) 1.988
7. 7.0.21 × 14 — where does the decimal point go? (a) 2.94 (b) 0.294 (c) 29.4 (d) 0.0294
8. 8.5.6 × 2 — where does the decimal point go? (a) 0.112 (b) 112 (c) 1.12 (d) 11.2
9. 9.1.8 × 1.3 — where does the decimal point go? (a) 0.0234 (b) 23.4 (c) 0.234 (d) 2.34
10. 10.0.59 × 6 — where does the decimal point go? (a) 35.4 (b) 0.0354 (c) 3.54 (d) 0.354
11. 11.6.3 × 3.8 — where does the decimal point go? (a) 239.4 (b) 0.2394 (c) 23.94 (d) 2.394
12. 12.1.6 × 4.8 — where does the decimal point go? (a) 76.8 (b) 0.768 (c) 0.0768 (d) 7.68
13. 13.0.57 × 5 — where does the decimal point go? (a) 0.0285 (b) 0.285 (c) 28.5 (d) 2.85
14. 14.0.93 × 1.8 — where does the decimal point go? (a) 16.74 (b) 0.01674 (c) 0.1674 (d) 1.674
15. 15.4.8 × 3 — where does the decimal point go? (a) 14.4 (b) 1.44 (c) 0.144 (d) 144
16. 16.6.7 × 15 — where does the decimal point go? (a) 10.05 (b) 100.5 (c) 1.005 (d) 1005
17. 17.4.4 × 4 — where does the decimal point go? (a) 0.176 (b) 1.76 (c) 17.6 (d) 176
18. 18.8.6 × 0.9 — where does the decimal point go? (a) 77.4 (b) 0.0774 (c) 0.774 (d) 7.74
19. 19.0.93 × 27 — where does the decimal point go? (a) 2.511 (b) 25.11 (c) 251.1 (d) 0.2511
20. 20.0.81 × 0.4 — where does the decimal point go? (a) 0.0324 (b) 3.24 (c) 0.00324 (d) 0.324
21. 21.0.18 × 7 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 0.126 (d) 12.6
22. 22.0.19 × 0.7 — where does the decimal point go? (a) 0.0133 (b) 0.00133 (c) 1.33 (d) 0.133
23. 23.8.5 × 0.3 — where does the decimal point go? (a) 0.0255 (b) 0.255 (c) 2.55 (d) 25.5
24. 24.3.9 × 16 — where does the decimal point go? (a) 6.24 (b) 0.624 (c) 62.4 (d) 624
25. 25.0.52 × 22 — where does the decimal point go? (a) 11.44 (b) 1.144 (c) 0.1144 (d) 114.4
26. 26.0.33 × 5 — where does the decimal point go? (a) 16.5 (b) 0.165 (c) 1.65 (d) 0.0165
27. 27.0.57 × 0.2 — where does the decimal point go? (a) 0.0114 (b) 0.00114 (c) 0.114 (d) 1.14
28. 28.1.5 × 11 — where does the decimal point go? (a) 165 (b) 16.5 (c) 0.165 (d) 1.65
29. 29.7.1 × 0.6 — where does the decimal point go? (a) 0.0426 (b) 0.426 (c) 4.26 (d) 42.6
30. 30.8.2 × 14 — where does the decimal point go? (a) 114.8 (b) 11.48 (c) 1.148 (d) 1148
31. 31.0.18 × 8 — where does the decimal point go? (a) 14.4 (b) 0.0144 (c) 0.144 (d) 1.44
32. 32.4.6 × 2 — where does the decimal point go? (a) 0.092 (b) 9.2 (c) 0.92 (d) 92
33. 33.8.7 × 4.8 — where does the decimal point go? (a) 41.76 (b) 417.6 (c) 0.4176 (d) 4.176
34. 34.0.57 × 7 — where does the decimal point go? (a) 0.399 (b) 3.99 (c) 39.9 (d) 0.0399
35. 35.3.7 × 0.2 — where does the decimal point go? (a) 0.0074 (b) 0.74 (c) 7.4 (d) 0.074
36. 36.0.57 × 0.3 — where does the decimal point go? (a) 0.171 (b) 0.0171 (c) 1.71 (d) 0.00171
37. 37.0.24 × 8 — where does the decimal point go? (a) 0.192 (b) 19.2 (c) 0.0192 (d) 1.92
38. 38.0.23 × 0.8 — where does the decimal point go? (a) 0.0184 (b) 0.00184 (c) 0.184 (d) 1.84
39. 39.0.58 × 1.1 — where does the decimal point go? (a) 0.00638 (b) 0.638 (c) 0.0638 (d) 6.38
40. 40.0.23 × 8 — where does the decimal point go? (a) 18.4 (b) 0.0184 (c) 0.184 (d) 1.84

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