Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 572 · 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: 34 × 44 = 1496. Correct or wrong? (a) wrong (b) correct
2. 2.Best estimate of 801 × 6? (a) 48000 (b) 480 (c) 9600 (d) 4800
3. 3.12 × 13 =
4. 4.147 × 4 =
5. 5.10% of 820 =
6. 6.2 + 8 + 8 + 2 + 4 =
7. 7.34 × 15 =
8. 8.₹66.50 + ₹35.65 =
9. 9.84 + 21 + 26 + 71 =
10. 10.221 + 39 =
11. 11.19 × 13 =
12. 12.₹95.90 + ₹5.10 =
13. 13.770 ÷ 5 =
14. 14.316 − 19 =
15. 15.6 + 9 + 2 + 8 =
16. 16.40 × 15 =
17. 17.₹63.15 + ₹36.20 =
18. 18.52 × 8 =
19. 19.7 + 5 + 8 + 2 =
20. 20.7 + 5 + 6 + 4 =
21. 21.5% of 20 =
22. 22.5% of 220 =
23. 23.Best estimate of 48 × 18? (a) 10000 (b) 2000 (c) 100 (d) 1000
24. 24.28 × 50 =
25. 25.2 + 2 + 7 + 8 =
26. 26.₹55.65 − ₹23.25 =
27. 27.25% of 530 =
28. 28.79² =
29. 29.29² =
30. 30.588 − 28 =
31. 31.39² =
32. 32.1500 ÷ 50 =
33. 33.61 + 26 + 57 + 18 =
34. 34.300 ÷ 50 =
35. 35.750 ÷ 25 =
36. 36.242 − 96 =
37. 37.Check with nines: 146 + 275 = 415. Correct or wrong? (a) wrong (b) correct
38. 38.42 × 15 =
39. 39.Check with nines: 643 + 753 = 1399. Correct or wrong? (a) wrong (b) correct
40. 40.₹54.55 − ₹36.85 =

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