Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 632 · 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. 1.33 × 8 =
2. 2.20 + 71 + 69 + 35 =
3. 3.1325 ÷ 25 =
4. 4.20 × 4 =
5. 5.1200 ÷ 25 =
6. 6.Best estimate of 801 × 3? (a) 24000 (b) 240 (c) 4800 (d) 2400
7. 7.85 + 83 + 62 + 43 =
8. 8.69² =
9. 9.32 × 5 =
10. 10.17 × 8 =
11. 11.16 × 12 =
12. 12.83 × 5 =
13. 13.7 + 3 + 6 + 8 =
14. 14.19² =
15. 15.89 + 28 =
16. 16.87 + 54 + 57 + 21 =
17. 17.113 + 29 =
18. 18.Check with nines: 47 × 12 = 564. Correct or wrong? (a) wrong (b) correct
19. 19.21 × 4 =
20. 20.260 + 18 =
21. 21.6 × 15 =
22. 22.63 × 15 =
23. 23.12 × 13 =
24. 24.55 × 4 =
25. 25.550 ÷ 50 =
26. 26.17 × 15 =
27. 27.11 × 16 =
28. 28.125 + 37 =
29. 29.59² =
30. 30.₹21.85 + ₹49.90 =
31. 31.3 + 3 + 4 + 7 + 7 =
32. 32.Check with nines: 329 + 276 = 605. Correct or wrong? (a) wrong (b) correct
33. 33.101 + 18 =
34. 34.Check with nines: 621 + 185 = 808. Correct or wrong? (a) correct (b) wrong
35. 35.Best estimate of 701 × 7? (a) 4900 (b) 490 (c) 49000 (d) 9800
36. 36.183 + 97 =
37. 37.480 − 96 =
38. 38.308 − 88 =
39. 39.13 × 19 =
40. 40.Best estimate of 42 × 71? (a) 5600 (b) 280 (c) 2800 (d) 28000

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