Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 890 · 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. 1.11 × 13 =
2. 2.18 × 15 =
3. 3.15% of 760 =
4. 4.103 + 39 =
5. 5.41 × 15 =
6. 6.150 × 4 =
7. 7.11 × 12 =
8. 8.21² =
9. 9.65 − 27 =
10. 10.15 × 15 =
11. 11.63 × 15 =
12. 12.67 × 4 =
13. 13.19 × 19 =
14. 14.1 + 2 + 8 + 2 =
15. 15.350 ÷ 25 =
16. 16.10% of 70 =
17. 17.1125 ÷ 25 =
18. 18.41 × 8 =
19. 19.12 × 8 =
20. 20.69² =
21. 21.Best estimate of 71 × 89? (a) 12600 (b) 63000 (c) 630 (d) 6300
22. 22.₹27.40 − ₹21.95 =
23. 23.₹35.20 − ₹26.20 =
24. 24.57 × 15 =
25. 25.Check with nines: 46 × 87 = 3997. Correct or wrong? (a) wrong (b) correct
26. 26.21² =
27. 27.5 + 4 + 2 + 6 =
28. 28.9 + 1 + 2 + 8 + 2 =
29. 29.12 × 50 =
30. 30.150 ÷ 25 =
31. 31.Best estimate of 78 × 89? (a) 14400 (b) 7200 (c) 72000 (d) 720
32. 32.46 × 50 =
33. 33.17 × 19 =
34. 34.47 + 12 + 69 + 35 =
35. 35.1 + 6 + 7 + 9 =
36. 36.Check with nines: 98 × 55 = 5387. Correct or wrong? (a) wrong (b) correct
37. 37.47 × 5 =
38. 38.Check with nines: 312 + 668 = 980. Correct or wrong? (a) correct (b) wrong
39. 39.58 × 15 =
40. 40.Best estimate of 52 × 81? (a) 8000 (b) 40000 (c) 4000 (d) 400

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