Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 913 · 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. 1.25% of 570 =
2. 2.1800 ÷ 50 =
3. 3.48 × 15 =
4. 4.93 × 5 =
5. 5.1500 ÷ 25 =
6. 6.6 + 8 + 1 + 3 + 2 =
7. 7.9 + 1 + 9 + 5 + 8 =
8. 8.1% of 470 =
9. 9.32 × 15 =
10. 10.50% of 30 =
11. 11.₹13.65 + ₹31.80 =
12. 12.Check with nines: 571 + 918 = 1489. Correct or wrong? (a) correct (b) wrong
13. 13.186 − 17 =
14. 14.Check with nines: 57 × 42 = 2392. Correct or wrong? (a) wrong (b) correct
15. 15.89 + 29 =
16. 16.20% of 440 =
17. 17.14 × 14 =
18. 18.9 + 2 + 1 + 8 =
19. 19.86 × 5 =
20. 20.19 × 19 =
21. 21.69² =
22. 22.42 + 39 + 88 + 88 =
23. 23.57 × 15 =
24. 24.20% of 310 =
25. 25.Best estimate of 79 × 48? (a) 400 (b) 8000 (c) 40000 (d) 4000
26. 26.Best estimate of 21 × 78? (a) 3200 (b) 1600 (c) 16000 (d) 160
27. 27.78 + 80 + 42 + 39 =
28. 28.81 × 5 =
29. 29.5% of 60 =
30. 30.18 × 14 =
31. 31.71² =
32. 32.₹76.80 + ₹17.75 =
33. 33.292 + 18 =
34. 34.35 × 15 =
35. 35.89² =
36. 36.208 − 89 =
37. 37.54 × 15 =
38. 38.85 + 67 =
39. 39.2 + 6 + 4 + 2 =
40. 40.1 + 6 + 9 + 2 =

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