Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 71 · 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 297 × 5? (a) 1500 (b) 3000 (c) 150 (d) 15000
2. 2.21² =
3. 3.528 − 57 =
4. 4.539 − 47 =
5. 5.Check with nines: 326 + 705 = 1031. Correct or wrong? (a) wrong (b) correct
6. 6.78 × 50 =
7. 7.11 + 75 + 31 + 17 =
8. 8.79² =
9. 9.85 + 29 =
10. 10.Check with nines: 314 + 278 = 597. Correct or wrong? (a) wrong (b) correct
11. 11.Best estimate of 101 × 3? (a) 30 (b) 300 (c) 600 (d) 3000
12. 12.23 × 5 =
13. 13.Check with nines: 782 + 627 = 1415. Correct or wrong? (a) wrong (b) correct
14. 14.5% of 430 =
15. 15.25 × 15 =
16. 16.Best estimate of 799 × 8? (a) 640 (b) 12800 (c) 64000 (d) 6400
17. 17.₹68.30 − ₹24.95 =
18. 18.19 × 12 =
19. 19.13 × 14 =
20. 20.Check with nines: 70 × 46 = 3219. Correct or wrong? (a) wrong (b) correct
21. 21.49² =
22. 22.91² =
23. 23.50 × 5 =
24. 24.24 × 15 =
25. 25.₹50.15 + ₹34.35 =
26. 26.39 × 15 =
27. 27.48 × 5 =
28. 28.5% of 50 =
29. 29.58 × 15 =
30. 30.21 + 57 + 65 + 11 =
31. 31.231 − 76 =
32. 32.Check with nines: 29 × 39 = 1130. Correct or wrong? (a) correct (b) wrong
33. 33.70 + 85 + 38 + 39 =
34. 34.186 − 99 =
35. 35.68 × 4 =
36. 36.1175 ÷ 25 =
37. 37.8 + 2 + 6 + 4 =
38. 38.61 × 8 =
39. 39.19 × 15 =
40. 40.17 + 62 + 85 + 32 =

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