Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 589 · 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. 1.10% of 390 =
2. 2.49² =
3. 3.₹31.50 − ₹22.60 =
4. 4.Best estimate of 52 × 88? (a) 9000 (b) 4500 (c) 45000 (d) 450
5. 5.52 + 49 + 73 + 37 =
6. 6.21 × 50 =
7. 7.Best estimate of 203 × 6? (a) 12000 (b) 120 (c) 1200 (d) 2400
8. 8.29 × 8 =
9. 9.4 + 1 + 8 + 7 + 3 =
10. 10.67 × 8 =
11. 11.₹31.15 + ₹36.95 =
12. 12.6 + 7 + 7 + 4 + 8 =
13. 13.₹30.40 + ₹22.20 =
14. 14.1% of 620 =
15. 15.640 ÷ 5 =
16. 16.775 ÷ 25 =
17. 17.5% of 540 =
18. 18.178 + 57 =
19. 19.660 ÷ 5 =
20. 20.610 ÷ 5 =
21. 21.15% of 810 =
22. 22.Check with nines: 84 × 32 = 2680. Correct or wrong? (a) wrong (b) correct
23. 23.50 × 5 =
24. 24.55 × 15 =
25. 25.45 × 5 =
26. 26.Check with nines: 98 × 31 = 3043. Correct or wrong? (a) wrong (b) correct
27. 27.508 − 26 =
28. 28.10% of 780 =
29. 29.Best estimate of 199 × 7? (a) 2800 (b) 140 (c) 1400 (d) 14000
30. 30.52 × 50 =
31. 31.Best estimate of 21 × 68? (a) 140 (b) 2800 (c) 14000 (d) 1400
32. 32.12 × 17 =
33. 33.51² =
34. 34.361 − 97 =
35. 35.₹5.85 + ₹28.45 =
36. 36.₹22.25 + ₹33.10 =
37. 37.Check with nines: 53 × 48 = 2538. Correct or wrong? (a) wrong (b) correct
38. 38.₹94.90 + ₹34.65 =
39. 39.1200 ÷ 50 =
40. 40.15% of 70 =

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