Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 904 · 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.Check with nines: 65 × 85 = 5526. Correct or wrong? (a) wrong (b) correct
2. 2.5% of 710 =
3. 3.23 × 15 =
4. 4.337 + 87 =
5. 5.150 × 4 =
6. 6.429 − 37 =
7. 7.194 − 36 =
8. 8.52 + 24 + 88 + 54 =
9. 9.55 × 15 =
10. 10.485 + 69 =
11. 11.95 × 5 =
12. 12.Best estimate of 51 × 49? (a) 2500 (b) 250 (c) 5000 (d) 25000
13. 13.18 × 17 =
14. 14.1425 ÷ 25 =
15. 15.₹16.90 + ₹11.80 =
16. 16.291 − 37 =
17. 17.5 + 2 + 5 + 5 =
18. 18.5 + 8 + 5 + 8 =
19. 19.93 × 5 =
20. 20.26 × 5 =
21. 21.82 × 4 =
22. 22.39² =
23. 23.Check with nines: 515 + 639 = 1153. Correct or wrong? (a) wrong (b) correct
24. 24.57 + 47 + 21 + 78 =
25. 25.81 × 50 =
26. 26.Best estimate of 61 × 41? (a) 24000 (b) 240 (c) 4800 (d) 2400
27. 27.1800 ÷ 50 =
28. 28.705 ÷ 5 =
29. 29.39 + 33 + 20 + 33 =
30. 30.13 × 12 =
31. 31.₹18.95 + ₹5.10 =
32. 32.96 × 5 =
33. 33.249 + 18 =
34. 34.27 × 50 =
35. 35.Check with nines: 63 × 24 = 1514. Correct or wrong? (a) wrong (b) correct
36. 36.71² =
37. 37.5% of 270 =
38. 38.49² =
39. 39.262 + 29 =
40. 40.47 + 80 + 77 + 64 =

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