Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 735 · 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. 1.16 × 8 =
2. 2.89² =
3. 3.Best estimate of 68 × 62? (a) 420 (b) 42000 (c) 4200 (d) 8400
4. 4.79 × 4 =
5. 5.45 + 42 + 52 + 20 =
6. 6.149 + 19 =
7. 7.650 ÷ 50 =
8. 8.Best estimate of 103 × 5? (a) 50 (b) 1000 (c) 5000 (d) 500
9. 9.37 × 5 =
10. 10.156 × 4 =
11. 11.3 + 2 + 2 + 8 =
12. 12.29 × 5 =
13. 13.77 × 50 =
14. 14.216 + 78 =
15. 15.48 + 66 + 44 + 59 =
16. 16.Best estimate of 698 × 3? (a) 4200 (b) 21000 (c) 2100 (d) 210
17. 17.4 + 6 + 8 + 6 =
18. 18.Check with nines: 223 + 214 = 445. Correct or wrong? (a) correct (b) wrong
19. 19.25 × 15 =
20. 20.Check with nines: 40 × 80 = 3203. Correct or wrong? (a) correct (b) wrong
21. 21.79 + 17 =
22. 22.Best estimate of 82 × 68? (a) 5600 (b) 11200 (c) 560 (d) 56000
23. 23.6 × 15 =
24. 24.50 × 5 =
25. 25.₹52.10 − ₹32.40 =
26. 26.1% of 160 =
27. 27.7 × 15 =
28. 28.7 + 1 + 9 + 9 + 3 =
29. 29.20% of 110 =
30. 30.₹25.80 + ₹37.30 =
31. 31.15% of 470 =
32. 32.1300 ÷ 50 =
33. 33.13 × 13 =
34. 34.262 − 69 =
35. 35.367 − 98 =
36. 36.925 ÷ 25 =
37. 37.288 − 59 =
38. 38.41 + 81 + 24 + 43 =
39. 39.61² =
40. 40.Check with nines: 611 + 323 = 928. Correct or wrong? (a) correct (b) wrong

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