Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 72 · 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.Best estimate of 798 × 4? (a) 32000 (b) 320 (c) 3200 (d) 6400
2. 2.1450 ÷ 50 =
3. 3.79 + 78 =
4. 4.515 ÷ 5 =
5. 5.92 × 5 =
6. 6.173 − 39 =
7. 7.15% of 670 =
8. 8.15% of 170 =
9. 9.44 + 73 + 36 + 42 =
10. 10.Best estimate of 49 × 51? (a) 5000 (b) 250 (c) 25000 (d) 2500
11. 11.Best estimate of 58 × 69? (a) 420 (b) 4200 (c) 42000 (d) 8400
12. 12.Check with nines: 20 × 28 = 561. Correct or wrong? (a) correct (b) wrong
13. 13.20% of 610 =
14. 14.269 − 96 =
15. 15.90 ÷ 5 =
16. 16.64 × 50 =
17. 17.Check with nines: 32 × 67 = 2144. Correct or wrong? (a) wrong (b) correct
18. 18.₹41.40 + ₹14.10 =
19. 19.329 − 38 =
20. 20.36 × 15 =
21. 21.₹8.05 − ₹7.85 =
22. 22.395 − 97 =
23. 23.137 − 16 =
24. 24.55 + 84 + 59 + 56 =
25. 25.118 − 87 =
26. 26.310 ÷ 5 =
27. 27.92 − 19 =
28. 28.Check with nines: 588 + 768 = 1356. Correct or wrong? (a) wrong (b) correct
29. 29.₹77.25 + ₹9.90 =
30. 30.19 × 5 =
31. 31.57 × 15 =
32. 32.Best estimate of 62 × 69? (a) 42000 (b) 420 (c) 4200 (d) 8400
33. 33.5% of 160 =
34. 34.Check with nines: 23 × 30 = 690. Correct or wrong? (a) wrong (b) correct
35. 35.885 ÷ 5 =
36. 36.3 + 5 + 4 + 2 + 6 =
37. 37.23 × 5 =
38. 38.409 − 46 =
39. 39.Best estimate of 81 × 59? (a) 4800 (b) 9600 (c) 480 (d) 48000
40. 40.489 − 36 =

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