Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 782 · 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.₹17.25 + ₹40.10 =
2. 2.1450 ÷ 50 =
3. 3.₹80.10 − ₹27.40 =
4. 4.76 − 26 =
5. 5.Check with nines: 50 × 14 = 701. Correct or wrong? (a) correct (b) wrong
6. 6.21 × 5 =
7. 7.950 ÷ 50 =
8. 8.4 + 1 + 3 + 9 + 9 =
9. 9.8 + 5 + 2 + 9 =
10. 10.10% of 460 =
11. 11.18 × 13 =
12. 12.107 − 38 =
13. 13.306 − 16 =
14. 14.Best estimate of 59 × 31? (a) 3600 (b) 180 (c) 18000 (d) 1800
15. 15.4 + 2 + 2 + 6 + 7 =
16. 16.68 × 4 =
17. 17.Best estimate of 71 × 58? (a) 4200 (b) 420 (c) 42000 (d) 8400
18. 18.377 + 17 =
19. 19.20% of 170 =
20. 20.46 × 15 =
21. 21.29 + 44 + 51 + 28 =
22. 22.28 × 8 =
23. 23.Check with nines: 337 + 348 = 684. Correct or wrong? (a) correct (b) wrong
24. 24.11 × 15 =
25. 25.1650 ÷ 50 =
26. 26.945 ÷ 5 =
27. 27.Best estimate of 71 × 28? (a) 2100 (b) 210 (c) 4200 (d) 21000
28. 28.31² =
29. 29.389 + 97 =
30. 30.51 × 8 =
31. 31.416 − 57 =
32. 32.8 + 9 + 1 + 1 =
33. 33.382 + 57 =
34. 34.Best estimate of 62 × 48? (a) 6000 (b) 30000 (c) 300 (d) 3000
35. 35.Best estimate of 42 × 32? (a) 120 (b) 12000 (c) 1200 (d) 2400
36. 36.426 + 27 =
37. 37.12 × 11 =
38. 38.65 + 82 + 18 + 78 =
39. 39.19² =
40. 40.51² =

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