Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 479 · 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. 1.79² =
2. 2.10% of 830 =
3. 3.40 × 15 =
4. 4.423 − 49 =
5. 5.303 + 29 =
6. 6.Check with nines: 64 × 78 = 4992. Correct or wrong? (a) wrong (b) correct
7. 7.81 + 58 + 30 + 80 =
8. 8.Check with nines: 49 × 71 = 3487. Correct or wrong? (a) wrong (b) correct
9. 9.7 + 3 + 1 + 7 + 5 =
10. 10.127 × 4 =
11. 11.57 × 4 =
12. 12.470 ÷ 5 =
13. 13.1 + 8 + 3 + 1 + 9 =
14. 14.472 + 58 =
15. 15.1% of 330 =
16. 16.Check with nines: 353 + 669 = 1029. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 836 + 733 = 1577. Correct or wrong? (a) correct (b) wrong
18. 18.486 − 26 =
19. 19.Best estimate of 51 × 22? (a) 2000 (b) 100 (c) 1000 (d) 10000
20. 20.175 + 17 =
21. 21.46 × 15 =
22. 22.59² =
23. 23.102 × 4 =
24. 24.42 × 8 =
25. 25.44 + 39 + 14 + 34 =
26. 26.12 × 14 =
27. 27.₹51.15 − ₹9.30 =
28. 28.375 + 29 =
29. 29.410 + 69 =
30. 30.38 × 5 =
31. 31.19 × 50 =
32. 32.7 + 5 + 4 + 3 =
33. 33.₹92.85 + ₹21.25 =
34. 34.79² =
35. 35.₹61.90 + ₹7.35 =
36. 36.4 + 7 + 4 + 6 + 9 =
37. 37.53 × 4 =
38. 38.240 + 59 =
39. 39.11 × 12 =
40. 40.65 + 67 =

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