Mental Maths Questions Worksheet for Class 5
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.
NameDateTime takenScore ___ / 40
- 1.109 − 69 =
- 2.87 − 57 =
- 3.14² =
- 4.1 + ? = 10
- 5.32 × 8 =
- 6.10% of ₹380 =
- 7.35 + ? = 100
- 8.You start your homework at 6:20 and finish at 8:25. How many minutes did you work?
- 9.78 − 44 =
- 10.Double 19 =
- 11.23 × 3 =
- 12.Best estimate of 616 + 345? (a) 900 (b) 1100 (c) 700
- 13.41 children stand in rows of 4. How many full rows can they make?
- 14.5 + 9 =
- 15.16 + ? = 100
- 16.27 + 4 =
- 17.204 ÷ 4 =
- 18.21² =
- 19.You start your homework at 3:30 and finish at 6:45. How many minutes did you work?
- 20.A film starts at 1:50 and ends at 3:05. How many minutes long is the film?
- 21.92 − 66 =
- 22.You buy a water bottle for ₹28 and a pen for ₹17. You pay with a ₹100 note. How much change do you get, in rupees?
- 23.207 − 190 =
- 24.You buy a storybook for ₹339 and pay with a ₹500 note. How much change do you get, in rupees?
- 25.17 × 8 =
- 26.249 ÷ 3 =
- 27.41 + ? = 100
- 28.76 + ? = 100
- 29.75 ÷ 5 =
- 30.Half of 122 =
- 31.122 − 76 =
- 32.36 + 5 =
- 33.48 laddoos are packed in boxes of 5. How many laddoos are left over?
- 34.231 ÷ 7 =
- 35.192 ÷ 8 =
- 36.27 + 9 =
- 37.92 − 15 =
- 38.144 ÷ 8 =
- 39.8 + ? = 10
- 40.88 ÷ 4 =
Answer key
- 40
- 30
- 196
- 9
- 256
- 38
- 65
- 125
- 34
- 38
- 69
- 900
- 10
- 14
- 84
- 31
- 51
- 441
- 195
- 75
- 26
- 55
- 17
- 161
- 136
- 83
- 59
- 24
- 15
- 61
- 46
- 41
- 3
- 33
- 24
- 36
- 77
- 18
- 2
- 22
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths