CLASS 5 · MATHS MELA · CHAPTER 15
Collect and tabulate data, read scaled pictographs and bar graphs, compare values and support conclusions with visible evidence.
41 worked answers · short steps first, explanations when you need them
Textbook pages 179–180
Question TV table
Count each speech bubble once and group equal times.
Check: 9+13+7+3+3=35.
| Daily TV time | Children |
|---|---|
| 1/2 hour | 9 |
| 1 hour | 13 |
| 1 1/2 hours | 7 |
| 2 hours | 3 |
| More than 2 hours | 3 |
1/2 hour: 9; 1 hour: 13; 1 1/2 hours: 7; 2 hours: 3; more than 2 hours: 3.
Question TV 1
Exclude the 9 children in the half-hour group.
35−9=26.
26 children.
Question TV 2
Add the half-hour, 1-hour and 1 1/2-hour groups.
9+13+7=29.
29 children.
Question TV 3
Read the last frequency.
3 children.
Question TV 4
2 hours has 3 children; half an hour has 9.
3<9.
False.
Question Screen-time reflection
Long unbroken screen use can cause eye strain.
Take breaks, blink often and follow adult or health guidance.
Yes, long sessions can strain the eyes; regular breaks and sensible limits help.
Textbook pages 180–182
Question Shop suggestion
Choose a key such as 1 icon=5 items.
Use a scaled pictograph and clearly write the value of one icon.
Question Shop 1
8×5=40.
40 toys.
Question Shop 2
10×5=50.
50 board games.
Question Shop 3
Toys=40, board games=50, sports items=12×5=60.
40+50+60=150.
150 play items.
Question Shop other scale
40÷10=4; 50÷10=5; 60÷10=6.
Use 4 toy icons, 5 board-game icons and 6 sports-item icons.
Question Road data
Each scooter icon represents 3 two-wheelers.
Monday: 8×3; Wednesday: 4×3; Friday: 12×3.
Monday 24, Wednesday 12, Friday 36.
Question Road 1
Friday has 12 icons, the greatest count.
Friday.
Question Road 2
24+12+36=72.
72 two-wheelers.
Question Road 3
24−12=12.
12 fewer two-wheelers.
Question Road 4
36−12=24.
24 more two-wheelers.
Question Road 5
24÷6=4; 12÷6=2; 36÷6=6.
Monday 4 icons, Wednesday 2 icons, Friday 6 icons.
Textbook pages 182–185
Question Representations
Raman uses repeated one-hour symbols in a table.
Sheela uses the height of vertical bars.
Raman uses a pictograph-like table; Sheela uses a bar graph.
Question Routine values
Count Raman’s one-hour boxes and read Sheela’s bar heights.
| Activity | Raman | Sheela |
|---|---|---|
| Sleeping | 9 h | 8 h |
| School | 6 h | 7 h |
| Studying | 2 h | 4 h |
| Eating and playing | 6 h | 3 h |
| Other activities | 1 h | 2 h |
Raman: 9, 6, 2, 6, 1 hours. Sheela: 8, 7, 4, 3, 2 hours for sleeping, school, studying, eating/playing and other activities.
Question Routine 1
Raman sleeps 9 hours; Sheela sleeps 8.
Raman, by 1 hour.
Question Routine 2
Sheela: 7 hours; Raman: 6 hours.
Sheela, by 1 hour.
Question Routine 3
4−2=2.
2 hours more.
Question Routine 4
Compare each pair: 9/8, 6/7, 2/4, 6/3, 1/2.
No; none of the five activity times are equal.
Question Routine 5
This is a judgement question, so give a reason.
Sheela has 8 hours of sleep and spreads the remaining time more evenly.
A reasonable answer is Sheela’s, because she has 8 hours of sleep and a less uneven spread; other answers need a clear reason.
Question My day
List all activities and their times.
Check that the total is 24 hours, choose a scale, label both axes and draw one bar per activity.
Activity answer; the values depend on the student and must total 24 hours.
Question Finger graph
Measure each strip in centimetres from the same baseline.
The tallest strip gives the longest finger and the shortest gives the smallest.
Activity answer; names and lengths depend on the measured group.
Textbook pages 185–187
Question Food reflection
Serve smaller first portions and take more only if needed.
Store safe untouched food properly or share it through an approved system; compost unsuitable scraps.
Plan portions, avoid taking excess, safely reuse or donate suitable food, and compost unavoidable scraps.
Question Food 1
The tallest bar is 8 kg.
Khichdi on Wednesday, 8 kg.
Question Food 2
The shortest bar is 4 kg.
Idli-sambar on Friday, 4 kg.
Question Food 3
5+6+8+7+4=30.
30 kg.
Question Food 4
30×3=90.
90 children.
Question Food 5
Friday is 4 kg and Monday is 5 kg.
Friday had less food wastage than Monday. Other graph-supported comparisons also work.
Question Food 6
Khichdi has the highest current value, 8 kg.
Khichdi, if next week follows the same pattern.
Question Picture 1
Several girls in the picture do not wear glasses.
False.
Question Picture 2
Counting the caps gives 9.
False.
Question Picture 3
The picture shows more book-holding girls than boys.
False.
Question Picture 4
Fewer than half of the 17 children wear glasses.
False.
Question Picture 5
The book count is greater than the 9-cap count.
True.
Question Picture 6
More girls than boys wear glasses.
False.
Question Picture 7
At least one child clearly has both.
True.
Question Picture 8
The top-left child has all three.
False.