Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 965 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.74 children stand in rows of 8. How many full rows can they make?
2. 2.Half of 138 =
3. 3.369 ÷ 9 =
4. 4.68 ÷ 4 =
5. 5.You buy a pencil box for ₹41 and a pen for ₹26. You pay with a ₹100 note. How much change do you get, in rupees?
6. 6.153 ÷ 9 =
7. 7.148 ÷ 4 =
8. 8.50% of ₹370 =
9. 9.67 + ? = 100
10. 10.Best estimate of 671 + 538? (a) 1200 (b) 1400 (c) 1000
11. 11.13 + 12 =
12. 12.19 × 8 =
13. 13.18 + 20 =
14. 14.You start your homework at 2:30 and finish at 3:20. How many minutes did you work?
15. 15.50% of ₹880 =
16. 16.You buy a box of crayons for ₹32 and a pen for ₹27. You pay with a ₹100 note. How much change do you get, in rupees?
17. 17.A film starts at 8:40 and ends at 12:00. How many minutes long is the film?
18. 18.You start your homework at 2:20 and finish at 4:05. How many minutes did you work?
19. 19.5 + ? = 10
20. 20.206 − 187 =
21. 21.237 ÷ 3 =
22. 22.Best estimate of 716 + 569? (a) 1100 (b) 1500 (c) 1300
23. 23.Double 27 =
24. 24.A cricket match starts at 4:30 and the first innings ends at 5:15. How many minutes did the innings last?
25. 25.47 + 36 =
26. 26.63 + 13 =
27. 27.47 laddoos are packed in boxes of 4. How many laddoos are left over?
28. 28.25 × 7 =
29. 29.66 + 19 =
30. 30.27 + 29 =
31. 31.50 + 19 =
32. 32.Best estimate of 61 × 34? (a) 18000 (b) 180 (c) 1800
33. 33.You buy a kite for ₹50 and pay with a ₹100 note. How much change do you get, in rupees?
34. 34.5% of ₹490 =
35. 35.14 × 8 =
36. 36.64 + ? = 100
37. 37.47 × 9 =
38. 38.19 + 20 =
39. 39.Half of 102 =
40. 40.192 ÷ 4 =

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