Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 948 · 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.Best estimate of 763 + 855? (a) 1700 (b) 1900 (c) 1500
2. 2.396 ÷ 9 =
3. 3.15² =
4. 4.56 − 48 =
5. 5.234 ÷ 6 =
6. 6.45 laddoos are packed in boxes of 4. How many laddoos are left over?
7. 7.Best estimate of 876 + 880? (a) 1800 (b) 2000 (c) 1600
8. 8.136 ÷ 8 =
9. 9.25 + 27 =
10. 10.Double 51 =
11. 11.112 ÷ 8 =
12. 12.You buy a water bottle for ₹32 and pay with a ₹100 note. How much change do you get, in rupees?
13. 13.Best estimate of 308 + 861? (a) 1000 (b) 1200 (c) 1400
14. 14.What is the remainder when 34 is divided by 5?
15. 15.120 ÷ 4 =
16. 16.109 − 78 =
17. 17.104 − 55 =
18. 18.You buy a water bottle for ₹38 and a pen for ₹13. You pay with a ₹100 note. How much change do you get, in rupees?
19. 19.21 children stand in rows of 4. How many full rows can they make?
20. 20.25% of ₹530 =
21. 21.264 ÷ 8 =
22. 22.You buy a water bottle for ₹19 and a pen for ₹26. You pay with a ₹100 note. How much change do you get, in rupees?
23. 23.Best estimate of 17 × 42? (a) 800 (b) 8000 (c) 80
24. 24.You buy a kite for ₹86 and pay with a ₹100 note. How much change do you get, in rupees?
25. 25.18 + 7 =
26. 26.Double 43 =
27. 27.67 − 19 =
28. 28.10% of ₹650 =
29. 29.Double 39 =
30. 30.81 − 13 =
31. 31.You start your homework at 5:55 and finish at 7:05. How many minutes did you work?
32. 32.11² =
33. 33.74 + 67 =
34. 34.28 + 9 =
35. 35.28 + 27 =
36. 36.13 × 6 =
37. 37.88 × 3 =
38. 38.5 + ? = 10
39. 39.26 × 8 =
40. 40.151 + 99 =

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