Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 414 · 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. 1.54 + 30 + 75 + 75 =
2. 2.27 × 8 =
3. 3.71 + 39 + 27 + 53 =
4. 4.9 + 9 + 2 + 8 =
5. 5.336 − 17 =
6. 6.Best estimate of 499 × 3? (a) 15000 (b) 150 (c) 3000 (d) 1500
7. 7.Best estimate of 58 × 82? (a) 480 (b) 48000 (c) 9600 (d) 4800
8. 8.95 × 50 =
9. 9.88 + 87 + 33 + 19 =
10. 10.79 × 5 =
11. 11.5 + 7 + 8 + 5 + 3 =
12. 12.363 + 88 =
13. 13.₹6.40 + ₹17.95 =
14. 14.33 × 4 =
15. 15.61 + 15 + 72 + 35 =
16. 16.5 × 15 =
17. 17.560 − 48 =
18. 18.Check with nines: 236 + 729 = 966. Correct or wrong? (a) correct (b) wrong
19. 19.Best estimate of 82 × 49? (a) 8000 (b) 40000 (c) 4000 (d) 400
20. 20.10% of 810 =
21. 21.1 + 1 + 9 + 2 + 7 =
22. 22.473 + 49 =
23. 23.41² =
24. 24.78 − 57 =
25. 25.43 × 50 =
26. 26.71² =
27. 27.36 + 69 =
28. 28.83 × 50 =
29. 29.59 × 50 =
30. 30.61² =
31. 31.Best estimate of 31 × 38? (a) 1200 (b) 2400 (c) 12000 (d) 120
32. 32.537 − 38 =
33. 33.271 + 18 =
34. 34.₹6.70 + ₹10.50 =
35. 35.5% of 380 =
36. 36.50% of 490 =
37. 37.6 + 6 + 4 + 6 =
38. 38.10% of 700 =
39. 39.Best estimate of 79 × 32? (a) 240 (b) 24000 (c) 2400 (d) 4800
40. 40.13 × 11 =

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