Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 447 · 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. 1.97 × 50 =
2. 2.117 × 4 =
3. 3.Best estimate of 299 × 8? (a) 4800 (b) 240 (c) 2400 (d) 24000
4. 4.89 × 5 =
5. 5.21 × 50 =
6. 6.55 × 15 =
7. 7.8 + 8 + 8 + 2 =
8. 8.89 + 68 =
9. 9.162 − 69 =
10. 10.481 − 26 =
11. 11.10% of 100 =
12. 12.6 × 15 =
13. 13.35 × 15 =
14. 14.46 × 5 =
15. 15.11 × 15 =
16. 16.₹96.35 + ₹9.60 =
17. 17.49² =
18. 18.Best estimate of 22 × 18? (a) 800 (b) 40 (c) 400 (d) 4000
19. 19.₹31.65 − ₹5.30 =
20. 20.Check with nines: 988 + 618 = 1606. Correct or wrong? (a) wrong (b) correct
21. 21.3 + 3 + 5 + 5 + 9 =
22. 22.23 + 73 + 61 + 30 =
23. 23.170 ÷ 5 =
24. 24.91 × 4 =
25. 25.₹61.20 + ₹4.75 =
26. 26.Check with nines: 222 + 877 = 1091. Correct or wrong? (a) correct (b) wrong
27. 27.78 + 64 + 56 + 39 =
28. 28.225 ÷ 25 =
29. 29.5% of 320 =
30. 30.99 − 39 =
31. 31.15% of 550 =
32. 32.5 × 15 =
33. 33.12 × 15 =
34. 34.4 + 7 + 8 + 9 + 1 =
35. 35.31 × 8 =
36. 36.52 × 4 =
37. 37.Check with nines: 82 × 84 = 6887. Correct or wrong? (a) wrong (b) correct
38. 38.₹39.75 − ₹35.20 =
39. 39.₹51.50 + ₹7.25 =
40. 40.Check with nines: 28 × 26 = 733. Correct or wrong? (a) correct (b) wrong

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