Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 845 · 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. 1.42 × 5 =
2. 2.13 × 50 =
3. 3.72 + 16 + 13 + 67 =
4. 4.370 − 68 =
5. 5.30 × 15 =
6. 6.Best estimate of 51 × 92? (a) 45000 (b) 450 (c) 4500 (d) 9000
7. 7.61² =
8. 8.16 × 17 =
9. 9.380 + 97 =
10. 10.20 × 15 =
11. 11.19 + 52 + 76 + 32 =
12. 12.58 × 15 =
13. 13.42 × 15 =
14. 14.19 × 15 =
15. 15.₹81.05 − ₹31.30 =
16. 16.25% of 550 =
17. 17.241 − 18 =
18. 18.49² =
19. 19.30 + 69 =
20. 20.163 + 28 =
21. 21.12 × 15 =
22. 22.82 + 78 =
23. 23.200 ÷ 25 =
24. 24.30 × 8 =
25. 25.20 × 15 =
26. 26.6 + 4 + 8 + 8 + 5 =
27. 27.₹47.35 − ₹17.25 =
28. 28.1125 ÷ 25 =
29. 29.7 + 2 + 6 + 8 =
30. 30.Best estimate of 78 × 48? (a) 400 (b) 4000 (c) 8000 (d) 40000
31. 31.Check with nines: 991 + 410 = 1404. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 73 × 32 = 2336. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 148 + 866 = 1014. Correct or wrong? (a) wrong (b) correct
34. 34.448 + 57 =
35. 35.53 × 50 =
36. 36.59 + 47 + 71 + 39 =
37. 37.925 ÷ 5 =
38. 38.Check with nines: 40 × 15 = 600. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 63 × 38 = 2394. Correct or wrong? (a) correct (b) wrong
40. 40.14 × 50 =

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