Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 403 · 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 498 × 7? (a) 3500 (b) 350 (c) 35000 (d) 7000
2. 2.69² =
3. 3.13 × 12 =
4. 4.Check with nines: 146 + 507 = 653. Correct or wrong? (a) wrong (b) correct
5. 5.69² =
6. 6.38 × 50 =
7. 7.15 + 35 + 16 + 18 =
8. 8.50 × 50 =
9. 9.299 − 39 =
10. 10.17 × 16 =
11. 11.15 × 5 =
12. 12.153 × 4 =
13. 13.8 + 5 + 5 + 1 + 5 =
14. 14.₹38.85 − ₹6.95 =
15. 15.₹37.80 − ₹25.95 =
16. 16.565 − 18 =
17. 17.22 × 8 =
18. 18.15% of 780 =
19. 19.78 × 50 =
20. 20.89² =
21. 21.97 × 50 =
22. 22.52 + 49 + 30 + 78 =
23. 23.80 − 56 =
24. 24.487 − 77 =
25. 25.66 × 8 =
26. 26.5 + 1 + 5 + 6 =
27. 27.Best estimate of 297 × 8? (a) 240 (b) 24000 (c) 4800 (d) 2400
28. 28.29² =
29. 29.17 × 19 =
30. 30.64 × 15 =
31. 31.7 + 4 + 6 + 7 + 3 =
32. 32.3 + 1 + 4 + 6 =
33. 33.13 × 18 =
34. 34.414 − 89 =
35. 35.7 + 2 + 4 + 8 =
36. 36.10% of 60 =
37. 37.325 − 18 =
38. 38.20% of 290 =
39. 39.₹63.20 − ₹31.70 =
40. 40.Check with nines: 932 + 275 = 1207. Correct or wrong? (a) wrong (b) correct

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