Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 446 · 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. 1.42 × 5 =
2. 2.42 × 50 =
3. 3.39² =
4. 4.21² =
5. 5.₹46.30 + ₹49.50 =
6. 6.Check with nines: 60 × 44 = 2640. Correct or wrong? (a) wrong (b) correct
7. 7.Best estimate of 51 × 68? (a) 3500 (b) 350 (c) 35000 (d) 7000
8. 8.40 × 8 =
9. 9.23 × 5 =
10. 10.95 × 5 =
11. 11.54 × 15 =
12. 12.290 − 69 =
13. 13.35 × 15 =
14. 14.19 × 4 =
15. 15.1700 ÷ 50 =
16. 16.15 × 12 =
17. 17.154 + 89 =
18. 18.459 + 57 =
19. 19.Best estimate of 203 × 7? (a) 140 (b) 1400 (c) 14000 (d) 2800
20. 20.Best estimate of 797 × 5? (a) 8000 (b) 400 (c) 40000 (d) 4000
21. 21.390 + 49 =
22. 22.11 × 14 =
23. 23.402 + 29 =
24. 24.16 + 88 + 11 + 17 =
25. 25.₹88.70 + ₹6.25 =
26. 26.690 ÷ 5 =
27. 27.Best estimate of 32 × 22? (a) 1200 (b) 6000 (c) 60 (d) 600
28. 28.35 × 8 =
29. 29.37 × 8 =
30. 30.32 + 19 + 72 + 85 =
31. 31.14 × 13 =
32. 32.Best estimate of 62 × 42? (a) 24000 (b) 240 (c) 4800 (d) 2400
33. 33.39 + 17 =
34. 34.1% of 50 =
35. 35.11 × 16 =
36. 36.22 + 15 + 44 + 41 =
37. 37.19 + 42 + 18 + 35 =
38. 38.₹80.90 + ₹32.90 =
39. 39.13 × 5 =
40. 40.6 + 4 + 7 + 3 =

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