Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 997 · 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. 1.429 + 89 =
2. 2.32 + 19 + 38 + 79 =
3. 3.Check with nines: 14 × 57 = 806. Correct or wrong? (a) wrong (b) correct
4. 4.421 − 58 =
5. 5.74 + 89 + 44 + 75 =
6. 6.7 + 3 + 1 + 8 =
7. 7.875 ÷ 25 =
8. 8.8 + 7 + 7 + 3 =
9. 9.2 + 6 + 5 + 5 =
10. 10.91² =
11. 11.306 + 39 =
12. 12.₹82.75 + ₹40.65 =
13. 13.1450 ÷ 25 =
14. 14.₹63.15 − ₹10.20 =
15. 15.25% of 690 =
16. 16.Best estimate of 499 × 3? (a) 3000 (b) 15000 (c) 150 (d) 1500
17. 17.Check with nines: 406 + 303 = 710. Correct or wrong? (a) correct (b) wrong
18. 18.54 × 15 =
19. 19.₹51.05 − ₹7.55 =
20. 20.253 + 17 =
21. 21.370 − 86 =
22. 22.64 + 59 + 30 + 46 =
23. 23.12 × 14 =
24. 24.44 + 38 =
25. 25.13 × 11 =
26. 26.15 × 13 =
27. 27.29² =
28. 28.49² =
29. 29.81² =
30. 30.151 × 4 =
31. 31.₹32.75 − ₹15.50 =
32. 32.1650 ÷ 50 =
33. 33.Check with nines: 59 × 74 = 4360. Correct or wrong? (a) wrong (b) correct
34. 34.Best estimate of 38 × 71? (a) 2800 (b) 28000 (c) 280 (d) 5600
35. 35.340 − 89 =
36. 36.28 + 74 + 72 + 49 =
37. 37.770 ÷ 5 =
38. 38.Best estimate of 58 × 88? (a) 540 (b) 5400 (c) 10800 (d) 54000
39. 39.8 + 2 + 9 + 9 =
40. 40.400 ÷ 50 =

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