Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 489 · 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. 1.13 × 15 =
2. 2.97 − 56 =
3. 3.50% of 120 =
4. 4.43 × 8 =
5. 5.Best estimate of 52 × 22? (a) 100 (b) 2000 (c) 1000 (d) 10000
6. 6.34 × 50 =
7. 7.5 + 6 + 9 + 5 =
8. 8.54 + 15 + 30 + 84 =
9. 9.17 × 12 =
10. 10.Best estimate of 71 × 59? (a) 4200 (b) 8400 (c) 42000 (d) 420
11. 11.Best estimate of 898 × 7? (a) 12600 (b) 6300 (c) 63000 (d) 630
12. 12.49² =
13. 13.3 + 1 + 7 + 9 =
14. 14.67 × 50 =
15. 15.5% of 510 =
16. 16.227 + 39 =
17. 17.48 × 15 =
18. 18.55 + 85 + 43 + 59 =
19. 19.468 + 88 =
20. 20.95 × 5 =
21. 21.Best estimate of 91 × 72? (a) 630 (b) 6300 (c) 63000 (d) 12600
22. 22.396 − 48 =
23. 23.21² =
24. 24.7 + 4 + 3 + 9 =
25. 25.547 − 49 =
26. 26.17 × 18 =
27. 27.36 × 15 =
28. 28.₹55.80 + ₹2.40 =
29. 29.75 ÷ 5 =
30. 30.Check with nines: 22 × 49 = 1076. Correct or wrong? (a) correct (b) wrong
31. 31.41² =
32. 32.1050 ÷ 50 =
33. 33.₹78.85 − ₹21.10 =
34. 34.5% of 210 =
35. 35.36 × 8 =
36. 36.Best estimate of 498 × 7? (a) 35000 (b) 3500 (c) 350 (d) 7000
37. 37.Check with nines: 46 × 53 = 2442. Correct or wrong? (a) correct (b) wrong
38. 38.950 ÷ 5 =
39. 39.21 × 15 =
40. 40.₹46.30 + ₹35.55 =

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