Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 751 · 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. 1.78 × 50 =
2. 2.2 + 8 + 9 + 2 =
3. 3.25% of 270 =
4. 4.63 + 85 + 13 + 86 =
5. 5.78 × 50 =
6. 6.67 × 8 =
7. 7.17 + 31 + 56 + 36 =
8. 8.₹63.40 + ₹39.85 =
9. 9.16 + 38 + 16 + 67 =
10. 10.59² =
11. 11.3 + 7 + 7 + 1 + 3 =
12. 12.Best estimate of 399 × 9? (a) 36000 (b) 360 (c) 7200 (d) 3600
13. 13.70 + 61 + 31 + 38 =
14. 14.8 + 1 + 5 + 2 =
15. 15.350 ÷ 25 =
16. 16.Best estimate of 62 × 68? (a) 42000 (b) 8400 (c) 420 (d) 4200
17. 17.89² =
18. 18.1% of 70 =
19. 19.₹16.95 − ₹5.45 =
20. 20.6 + 3 + 8 + 4 =
21. 21.Check with nines: 69 × 58 = 3998. Correct or wrong? (a) wrong (b) correct
22. 22.261 − 76 =
23. 23.31² =
24. 24.₹70.25 − ₹26.80 =
25. 25.144 + 28 =
26. 26.18 × 15 =
27. 27.₹19.40 − ₹10.40 =
28. 28.15 × 12 =
29. 29.37 × 15 =
30. 30.75 ÷ 25 =
31. 31.186 + 87 =
32. 32.55 × 15 =
33. 33.62 × 4 =
34. 34.150 ÷ 5 =
35. 35.Check with nines: 26 × 19 = 490. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 14 × 13 = 188. Correct or wrong? (a) correct (b) wrong
37. 37.₹74.55 + ₹3.85 =
38. 38.Best estimate of 51 × 48? (a) 250 (b) 5000 (c) 25000 (d) 2500
39. 39.Check with nines: 61 × 74 = 4514. Correct or wrong? (a) wrong (b) correct
40. 40.12 × 14 =

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