Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 560 · 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. 1.196 − 96 =
2. 2.77 × 50 =
3. 3.55 × 50 =
4. 4.259 + 77 =
5. 5.Check with nines: 50 × 93 = 4642. Correct or wrong? (a) correct (b) wrong
6. 6.311 + 89 =
7. 7.154 × 4 =
8. 8.69² =
9. 9.620 ÷ 5 =
10. 10.13 × 13 =
11. 11.49 × 4 =
12. 12.₹21.85 + ₹19.85 =
13. 13.446 − 28 =
14. 14.128 × 4 =
15. 15.85 × 50 =
16. 16.Best estimate of 68 × 18? (a) 1400 (b) 2800 (c) 140 (d) 14000
17. 17.31² =
18. 18.Check with nines: 74 × 69 = 5106. Correct or wrong? (a) correct (b) wrong
19. 19.35 × 5 =
20. 20.Best estimate of 51 × 38? (a) 200 (b) 2000 (c) 20000 (d) 4000
21. 21.81² =
22. 22.36 × 8 =
23. 23.₹40.40 + ₹32.50 =
24. 24.55 × 15 =
25. 25.Check with nines: 738 + 150 = 888. Correct or wrong? (a) correct (b) wrong
26. 26.71² =
27. 27.1300 ÷ 25 =
28. 28.12 × 15 =
29. 29.272 − 96 =
30. 30.Check with nines: 48 × 50 = 2398. Correct or wrong? (a) wrong (b) correct
31. 31.245 − 26 =
32. 32.18 × 15 =
33. 33.₹27.65 + ₹10.10 =
34. 34.Best estimate of 198 × 6? (a) 12000 (b) 120 (c) 1200 (d) 2400
35. 35.52 × 15 =
36. 36.850 ÷ 25 =
37. 37.128 − 59 =
38. 38.1950 ÷ 50 =
39. 39.147 + 19 =
40. 40.Best estimate of 69 × 31? (a) 2100 (b) 4200 (c) 21000 (d) 210

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