Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 533 · 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. 1.2 + 3 + 4 + 6 =
2. 2.119 + 89 =
3. 3.80 + 24 + 60 + 31 =
4. 4.Best estimate of 22 × 41? (a) 1600 (b) 8000 (c) 80 (d) 800
5. 5.150 ÷ 25 =
6. 6.150 ÷ 25 =
7. 7.49² =
8. 8.537 − 77 =
9. 9.397 − 56 =
10. 10.19 × 12 =
11. 11.426 + 29 =
12. 12.18 × 13 =
13. 13.49² =
14. 14.6 + 3 + 3 + 2 + 4 =
15. 15.11 × 14 =
16. 16.536 − 87 =
17. 17.1% of 800 =
18. 18.Check with nines: 639 + 686 = 1333. Correct or wrong? (a) wrong (b) correct
19. 19.Best estimate of 799 × 7? (a) 56000 (b) 11200 (c) 5600 (d) 560
20. 20.435 ÷ 5 =
21. 21.384 − 18 =
22. 22.Check with nines: 714 + 718 = 1432. Correct or wrong? (a) wrong (b) correct
23. 23.6 + 6 + 4 + 2 + 4 =
24. 24.Check with nines: 15 × 71 = 1065. Correct or wrong? (a) wrong (b) correct
25. 25.373 + 88 =
26. 26.31² =
27. 27.391 + 98 =
28. 28.23 × 5 =
29. 29.₹75.45 + ₹45.85 =
30. 30.3 + 3 + 6 + 6 + 7 =
31. 31.3 + 2 + 7 + 8 + 3 =
32. 32.₹84.85 − ₹16.85 =
33. 33.9 + 2 + 4 + 8 =
34. 34.Check with nines: 69 × 80 = 5520. Correct or wrong? (a) correct (b) wrong
35. 35.Best estimate of 801 × 7? (a) 5600 (b) 11200 (c) 56000 (d) 560
36. 36.49 + 87 + 25 + 54 =
37. 37.246 + 79 =
38. 38.66 × 50 =
39. 39.1 + 1 + 9 + 9 =
40. 40.₹36.90 + ₹36.30 =

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