Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 604 · 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. 1.56 × 5 =
2. 2.Check with nines: 20 × 39 = 780. Correct or wrong? (a) wrong (b) correct
3. 3.₹99.50 + ₹42.55 =
4. 4.15 × 14 =
5. 5.377 + 77 =
6. 6.Check with nines: 446 + 176 = 622. Correct or wrong? (a) correct (b) wrong
7. 7.₹52.65 − ₹15.30 =
8. 8.Best estimate of 51 × 41? (a) 20000 (b) 4000 (c) 2000 (d) 200
9. 9.Check with nines: 52 × 67 = 3486. Correct or wrong? (a) correct (b) wrong
10. 10.10% of 180 =
11. 11.330 + 98 =
12. 12.20 × 4 =
13. 13.26 × 5 =
14. 14.Check with nines: 14 × 36 = 501. Correct or wrong? (a) correct (b) wrong
15. 15.5 + 4 + 5 + 2 + 6 =
16. 16.48 × 50 =
17. 17.49 + 85 + 23 + 75 =
18. 18.52 + 67 + 66 + 64 =
19. 19.278 − 98 =
20. 20.39 × 15 =
21. 21.94 × 5 =
22. 22.1 + 5 + 1 + 8 + 5 =
23. 23.4 + 7 + 5 + 7 + 3 =
24. 24.96 × 50 =
25. 25.28 × 15 =
26. 26.9 + 1 + 1 + 5 =
27. 27.478 + 37 =
28. 28.57 × 50 =
29. 29.Best estimate of 62 × 19? (a) 120 (b) 2400 (c) 12000 (d) 1200
30. 30.445 ÷ 5 =
31. 31.84 + 69 + 33 + 35 =
32. 32.30 × 5 =
33. 33.26 × 8 =
34. 34.665 ÷ 5 =
35. 35.745 ÷ 5 =
36. 36.Check with nines: 69 × 60 = 4140. Correct or wrong? (a) wrong (b) correct
37. 37.56 × 15 =
38. 38.219 + 37 =
39. 39.8 + 2 + 2 + 2 + 7 =
40. 40.Check with nines: 23 × 16 = 370. Correct or wrong? (a) correct (b) wrong

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