Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 773 · 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. 1.89 × 50 =
2. 2.Best estimate of 297 × 4? (a) 12000 (b) 1200 (c) 120 (d) 2400
3. 3.568 − 37 =
4. 4.Check with nines: 14 × 15 = 210. Correct or wrong? (a) wrong (b) correct
5. 5.42 × 4 =
6. 6.421 − 38 =
7. 7.111 − 77 =
8. 8.Best estimate of 69 × 51? (a) 35000 (b) 3500 (c) 7000 (d) 350
9. 9.85 + 47 + 78 + 41 =
10. 10.50 × 4 =
11. 11.10% of 270 =
12. 12.19² =
13. 13.₹41.95 + ₹34.90 =
14. 14.Check with nines: 68 × 20 = 1362. Correct or wrong? (a) wrong (b) correct
15. 15.20% of 550 =
16. 16.Check with nines: 30 × 93 = 2791. Correct or wrong? (a) correct (b) wrong
17. 17.5% of 620 =
18. 18.129 + 37 =
19. 19.10% of 20 =
20. 20.125 − 29 =
21. 21.₹19.35 + ₹11.35 =
22. 22.Best estimate of 29 × 88? (a) 270 (b) 2700 (c) 5400 (d) 27000
23. 23.24 × 5 =
24. 24.Best estimate of 28 × 49? (a) 15000 (b) 1500 (c) 3000 (d) 150
25. 25.₹61.95 + ₹32.55 =
26. 26.65 × 5 =
27. 27.141 − 19 =
28. 28.₹79.15 + ₹44.05 =
29. 29.226 + 69 =
30. 30.17 × 8 =
31. 31.47 × 15 =
32. 32.3 + 8 + 9 + 2 =
33. 33.251 − 86 =
34. 34.19 × 16 =
35. 35.Check with nines: 730 + 398 = 1123. Correct or wrong? (a) wrong (b) correct
36. 36.36 + 85 + 72 + 54 =
37. 37.19 × 17 =
38. 38.Check with nines: 14 × 28 = 400. Correct or wrong? (a) correct (b) wrong
39. 39.478 + 47 =
40. 40.255 + 59 =

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