Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 799 · 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. 1.84 + 42 + 36 + 25 =
2. 2.72 × 50 =
3. 3.1 + 7 + 3 + 3 =
4. 4.168 − 36 =
5. 5.Best estimate of 501 × 6? (a) 300 (b) 6000 (c) 30000 (d) 3000
6. 6.15 × 15 =
7. 7.51 + 32 + 70 + 85 =
8. 8.880 ÷ 5 =
9. 9.245 + 68 =
10. 10.453 + 49 =
11. 11.500 ÷ 50 =
12. 12.156 × 4 =
13. 13.429 + 67 =
14. 14.49 × 5 =
15. 15.65 + 24 + 61 + 26 =
16. 16.12 × 17 =
17. 17.11 × 12 =
18. 18.10 × 15 =
19. 19.110 × 4 =
20. 20.50% of 250 =
21. 21.Best estimate of 398 × 3? (a) 2400 (b) 12000 (c) 1200 (d) 120
22. 22.11 × 16 =
23. 23.Best estimate of 21 × 69? (a) 140 (b) 2800 (c) 14000 (d) 1400
24. 24.₹91.90 + ₹10.70 =
25. 25.7 + 3 + 1 + 2 + 2 =
26. 26.1 + 6 + 9 + 4 + 6 =
27. 27.Best estimate of 499 × 3? (a) 15000 (b) 1500 (c) 150 (d) 3000
28. 28.₹81.60 + ₹2.70 =
29. 29.42 × 8 =
30. 30.11 × 13 =
31. 31.41² =
32. 32.Check with nines: 363 + 200 = 566. Correct or wrong? (a) wrong (b) correct
33. 33.44 × 4 =
34. 34.80 + 83 + 34 + 28 =
35. 35.7 + 7 + 8 + 3 =
36. 36.9 × 15 =
37. 37.54 × 15 =
38. 38.Best estimate of 18 × 38? (a) 8000 (b) 800 (c) 80 (d) 1600
39. 39.49 × 15 =
40. 40.₹89.10 − ₹32.70 =

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