Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 484 · 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. 1.82 × 5 =
2. 2.12 × 5 =
3. 3.₹56.40 + ₹27.40 =
4. 4.89 × 50 =
5. 5.79² =
6. 6.19² =
7. 7.5% of 410 =
8. 8.12 + 83 + 56 + 17 =
9. 9.294 + 37 =
10. 10.₹47.95 + ₹10.95 =
11. 11.486 + 77 =
12. 12.Best estimate of 503 × 3? (a) 15000 (b) 150 (c) 1500 (d) 3000
13. 13.17 × 18 =
14. 14.11 × 19 =
15. 15.Best estimate of 68 × 82? (a) 11200 (b) 560 (c) 5600 (d) 56000
16. 16.4 + 6 + 1 + 6 =
17. 17.9 + 1 + 1 + 3 =
18. 18.29² =
19. 19.34 × 15 =
20. 20.1500 ÷ 25 =
21. 21.233 − 26 =
22. 22.12 × 17 =
23. 23.₹50.70 + ₹20.90 =
24. 24.Check with nines: 64 × 53 = 3390. Correct or wrong? (a) wrong (b) correct
25. 25.Best estimate of 31 × 58? (a) 1800 (b) 18000 (c) 180 (d) 3600
26. 26.Check with nines: 85 × 52 = 4421. Correct or wrong? (a) correct (b) wrong
27. 27.4 × 15 =
28. 28.₹15.45 + ₹36.85 =
29. 29.361 − 38 =
30. 30.1400 ÷ 25 =
31. 31.66 − 26 =
32. 32.Check with nines: 876 + 266 = 1144. Correct or wrong? (a) wrong (b) correct
33. 33.230 ÷ 5 =
34. 34.Best estimate of 298 × 3? (a) 9000 (b) 900 (c) 1800 (d) 90
35. 35.13 × 11 =
36. 36.₹26.90 + ₹28.20 =
37. 37.20% of 650 =
38. 38.₹91.75 + ₹9.95 =
39. 39.369 − 18 =
40. 40.8 + 4 + 2 + 2 + 2 =

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