Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 920 · 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: 63 × 22 = 1386. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 58 × 32 = 1857. Correct or wrong? (a) wrong (b) correct
3. 3.395 − 76 =
4. 4.35 + 39 + 27 + 53 =
5. 5.Best estimate of 103 × 6? (a) 1200 (b) 600 (c) 60 (d) 6000
6. 6.785 ÷ 5 =
7. 7.10 × 15 =
8. 8.46 × 8 =
9. 9.23 × 4 =
10. 10.84 + 29 + 19 + 23 =
11. 11.87 + 67 + 83 + 47 =
12. 12.43 × 50 =
13. 13.20 × 50 =
14. 14.Best estimate of 499 × 3? (a) 15000 (b) 1500 (c) 3000 (d) 150
15. 15.15 × 15 =
16. 16.Check with nines: 185 + 130 = 308. Correct or wrong? (a) wrong (b) correct
17. 17.411 − 58 =
18. 18.15 × 12 =
19. 19.1 + 4 + 1 + 9 =
20. 20.Check with nines: 18 × 28 = 497. Correct or wrong? (a) wrong (b) correct
21. 21.₹6.75 + ₹22.65 =
22. 22.6 + 4 + 8 + 6 + 6 =
23. 23.7 + 2 + 4 + 3 =
24. 24.16 × 16 =
25. 25.69 × 8 =
26. 26.58 × 15 =
27. 27.11 + 65 + 21 + 25 =
28. 28.41² =
29. 29.9 + 7 + 2 + 1 =
30. 30.91² =
31. 31.260 + 97 =
32. 32.18 × 18 =
33. 33.Best estimate of 42 × 68? (a) 28000 (b) 280 (c) 5600 (d) 2800
34. 34.₹45.20 + ₹27.75 =
35. 35.40 + 59 =
36. 36.351 + 69 =
37. 37.Check with nines: 86 × 72 = 6192. Correct or wrong? (a) wrong (b) correct
38. 38.625 ÷ 5 =
39. 39.16 × 12 =
40. 40.7 + 1 + 3 + 9 =

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