Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 547 · 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.Check with nines: 68 × 45 = 3067. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 66 × 54 = 3571. Correct or wrong? (a) correct (b) wrong
3. 3.Best estimate of 59 × 39? (a) 240 (b) 4800 (c) 24000 (d) 2400
4. 4.₹16.95 + ₹31.55 =
5. 5.Best estimate of 401 × 3? (a) 1200 (b) 12000 (c) 2400 (d) 120
6. 6.2 + 8 + 2 + 7 =
7. 7.105 − 16 =
8. 8.41² =
9. 9.71² =
10. 10.19 × 15 =
11. 11.277 + 19 =
12. 12.52 × 15 =
13. 13.61² =
14. 14.82 + 68 + 61 + 16 =
15. 15.60 × 8 =
16. 16.593 − 69 =
17. 17.391 − 76 =
18. 18.19 × 14 =
19. 19.Check with nines: 546 + 592 = 1138. Correct or wrong? (a) wrong (b) correct
20. 20.250 ÷ 50 =
21. 21.41 × 15 =
22. 22.705 ÷ 5 =
23. 23.466 + 57 =
24. 24.Best estimate of 38 × 58? (a) 240 (b) 24000 (c) 4800 (d) 2400
25. 25.3 + 7 + 8 + 3 + 3 =
26. 26.₹10.15 + ₹14.10 =
27. 27.18 × 50 =
28. 28.Check with nines: 22 × 89 = 1958. Correct or wrong? (a) correct (b) wrong
29. 29.₹10.20 + ₹25.35 =
30. 30.344 − 58 =
31. 31.1 + 2 + 8 + 2 =
32. 32.61 × 15 =
33. 33.477 + 69 =
34. 34.5 + 8 + 1 + 5 =
35. 35.54 + 61 + 64 + 70 =
36. 36.17 + 89 + 19 + 60 =
37. 37.29² =
38. 38.44 + 47 =
39. 39.39² =
40. 40.305 ÷ 5 =

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