Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 644 · 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. 1.12 × 12 =
2. 2.Check with nines: 538 + 256 = 794. Correct or wrong? (a) wrong (b) correct
3. 3.Best estimate of 52 × 62? (a) 30000 (b) 300 (c) 3000 (d) 6000
4. 4.₹69.15 + ₹10.35 =
5. 5.29² =
6. 6.41 × 8 =
7. 7.15% of 400 =
8. 8.400 ÷ 50 =
9. 9.Best estimate of 603 × 5? (a) 300 (b) 6000 (c) 3000 (d) 30000
10. 10.81 + 55 + 33 + 48 =
11. 11.Best estimate of 29 × 19? (a) 600 (b) 60 (c) 1200 (d) 6000
12. 12.417 + 77 =
13. 13.89² =
14. 14.399 + 87 =
15. 15.17 × 15 =
16. 16.442 − 16 =
17. 17.Check with nines: 935 + 276 = 1211. Correct or wrong? (a) wrong (b) correct
18. 18.41 + 47 + 80 + 21 =
19. 19.800 ÷ 25 =
20. 20.430 − 37 =
21. 21.4 + 6 + 8 + 4 + 3 =
22. 22.17 × 16 =
23. 23.43 + 67 + 17 + 81 =
24. 24.₹47.75 − ₹27.60 =
25. 25.2 + 2 + 8 + 6 + 2 =
26. 26.15 × 50 =
27. 27.₹45.90 − ₹11.75 =
28. 28.237 − 28 =
29. 29.316 + 87 =
30. 30.21 + 18 + 44 + 21 =
31. 31.52 × 5 =
32. 32.39 × 15 =
33. 33.₹25.20 + ₹18.35 =
34. 34.Check with nines: 528 + 869 = 1397. Correct or wrong? (a) wrong (b) correct
35. 35.178 + 18 =
36. 36.16 × 13 =
37. 37.Best estimate of 302 × 5? (a) 150 (b) 1500 (c) 3000 (d) 15000
38. 38.Check with nines: 82 × 77 = 6314. Correct or wrong? (a) wrong (b) correct
39. 39.5% of 130 =
40. 40.9 + 3 + 5 + 3 + 5 =

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