Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 737 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.69² =
2. 2.1% of 160 =
3. 3.11 × 16 =
4. 4.Best estimate of 62 × 32? (a) 180 (b) 3600 (c) 1800 (d) 18000
5. 5.₹45.15 + ₹8.05 =
6. 6.43 × 4 =
7. 7.5 + 3 + 3 + 2 + 7 =
8. 8.332 + 49 =
9. 9.297 − 89 =
10. 10.295 ÷ 5 =
11. 11.76 + 59 =
12. 12.Best estimate of 897 × 6? (a) 54000 (b) 10800 (c) 540 (d) 5400
13. 13.16 × 14 =
14. 14.15 × 18 =
15. 15.90 − 79 =
16. 16.39 + 34 + 83 + 83 =
17. 17.Best estimate of 41 × 18? (a) 8000 (b) 80 (c) 1600 (d) 800
18. 18.89² =
19. 19.₹17.45 + ₹37.80 =
20. 20.Check with nines: 821 + 410 = 1231. Correct or wrong? (a) wrong (b) correct
21. 21.Best estimate of 403 × 5? (a) 20000 (b) 4000 (c) 200 (d) 2000
22. 22.40 × 15 =
23. 23.18 × 14 =
24. 24.4 + 2 + 8 + 8 =
25. 25.50 + 48 + 80 + 47 =
26. 26.47 × 5 =
27. 27.7 + 1 + 6 + 3 + 2 =
28. 28.9 + 1 + 1 + 3 =
29. 29.12 × 16 =
30. 30.50% of 80 =
31. 31.89 + 42 + 71 + 24 =
32. 32.₹88.30 − ₹14.15 =
33. 33.Check with nines: 480 + 204 = 684. Correct or wrong? (a) wrong (b) correct
34. 34.1% of 270 =
35. 35.Check with nines: 56 × 13 = 728. Correct or wrong? (a) wrong (b) correct
36. 36.16 × 11 =
37. 37.290 + 27 =
38. 38.8 + 5 + 4 + 6 =
39. 39.13 × 15 =
40. 40.1% of 460 =

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