Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 539 · 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.Best estimate of 198 × 8? (a) 160 (b) 1600 (c) 16000 (d) 3200
2. 2.8 + 2 + 7 + 8 + 4 =
3. 3.71² =
4. 4.16 × 15 =
5. 5.25% of 230 =
6. 6.575 ÷ 25 =
7. 7.23 × 50 =
8. 8.Check with nines: 89 × 77 = 6853. Correct or wrong? (a) wrong (b) correct
9. 9.11 × 16 =
10. 10.53 × 15 =
11. 11.19 × 50 =
12. 12.92 + 29 =
13. 13.81² =
14. 14.Best estimate of 48 × 31? (a) 150 (b) 1500 (c) 15000 (d) 3000
15. 15.41² =
16. 16.46 × 15 =
17. 17.Best estimate of 801 × 9? (a) 720 (b) 72000 (c) 14400 (d) 7200
18. 18.21² =
19. 19.5 + 5 + 8 + 2 + 8 =
20. 20.₹44.25 + ₹26.10 =
21. 21.62 + 88 + 20 + 24 =
22. 22.6 + 4 + 4 + 6 + 4 =
23. 23.62 × 5 =
24. 24.88 + 67 =
25. 25.Check with nines: 333 + 465 = 791. Correct or wrong? (a) correct (b) wrong
26. 26.23 × 15 =
27. 27.470 + 88 =
28. 28.15% of 240 =
29. 29.212 + 59 =
30. 30.2 + 1 + 4 + 9 =
31. 31.550 − 69 =
32. 32.1350 ÷ 25 =
33. 33.Best estimate of 19 × 28? (a) 600 (b) 1200 (c) 6000 (d) 60
34. 34.81² =
35. 35.620 ÷ 5 =
36. 36.50 × 4 =
37. 37.22 + 65 + 39 + 44 =
38. 38.₹96.55 − ₹22.25 =
39. 39.57 + 64 + 51 + 38 =
40. 40.Best estimate of 302 × 3? (a) 900 (b) 9000 (c) 1800 (d) 90

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