Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 456 · 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. 1.15 × 5 =
2. 2.Best estimate of 99 × 9? (a) 90 (b) 1800 (c) 900 (d) 9000
3. 3.487 − 47 =
4. 4.16 × 15 =
5. 5.79² =
6. 6.113 × 4 =
7. 7.₹7.20 + ₹12.50 =
8. 8.12 × 17 =
9. 9.8 + 7 + 9 + 3 =
10. 10.84 − 69 =
11. 11.Check with nines: 863 + 554 = 1423. Correct or wrong? (a) correct (b) wrong
12. 12.73 × 8 =
13. 13.26 × 5 =
14. 14.71 + 61 + 84 + 48 =
15. 15.14 × 4 =
16. 16.79² =
17. 17.39 + 47 =
18. 18.650 ÷ 50 =
19. 19.860 ÷ 5 =
20. 20.8 + 7 + 5 + 2 + 7 =
21. 21.11 × 15 =
22. 22.225 ÷ 5 =
23. 23.25% of 60 =
24. 24.17 × 18 =
25. 25.15 × 13 =
26. 26.1400 ÷ 50 =
27. 27.Check with nines: 69 × 25 = 1725. Correct or wrong? (a) correct (b) wrong
28. 28.58 × 15 =
29. 29.104 × 4 =
30. 30.45 × 50 =
31. 31.Check with nines: 639 + 496 = 1135. Correct or wrong? (a) correct (b) wrong
32. 32.Best estimate of 78 × 51? (a) 40000 (b) 4000 (c) 400 (d) 8000
33. 33.47 × 8 =
34. 34.6 + 1 + 3 + 9 + 8 =
35. 35.115 × 4 =
36. 36.29² =
37. 37.₹38.20 − ₹4.80 =
38. 38.27 × 8 =
39. 39.₹43.40 − ₹36.30 =
40. 40.Check with nines: 513 + 411 = 924. Correct or wrong? (a) wrong (b) correct

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