Original notes — ready
Chapter 13: Animal Jumps
CBSE (NCERT, English Medium) • Class 5 • Mathematics • Book: Math Mela
Animal Jumps — EG's own notes, in simple words
Book: Math Mela (CBSE, Class 5) | Chapter 13 | Medium: English
Diagram (labels are printed on the image): A frog, a kangaroo and a flea jumping. A general teaching picture; sizes are not to scale.
Animals jumping in a meadow. A general picture about animal jumps.
What the chapter is about
This chapter compares how far different animals can jump: a frog jumps many times its own body length, a kangaroo jumps metres at a time, and a flea jumps 200 times its height!
It is a lesson in measurement and comparison. We measure jumps in centimetres and metres, and we compare using multiplication: if a frog is 10 cm long and jumps 20 times its length, it jumps 200 cm = 2 metres.
The chapter also teaches respect for nature: small animals can do amazing things, and every creature has its own special strength.
Comparing fairly means using the same measure for everyone. A flea's jump sounds small in centimetres, but compared with its own body it is enormous. That is why the chapter compares jumps with body length, not only with metres.
What you should learn
When a problem says 'times its length', multiply the length by that number. Then convert the unit if needed (100 cm = 1 m).
Key Terms
- Jump — To push off the ground and move through the air.
- Body length — The length of the animal's own body.
- Compare — To see which is bigger, smaller or equal.
- Times — Multiplied by, e.g. 20 times means × 20.
- Metre (m) — 100 centimetres.
- Grasshopper — A small insect that jumps far using its strong back legs.
Remember
- Jump distance = body length × number of times.
- 100 cm = 1 m.
- A flea jumps about 200 times its height.
- Compare only after converting to the same unit.
Exam Tip / Common Mistake
Common mistake: comparing a jump in cm with a jump in m directly. Convert first — 2 m is bigger than 150 cm.
Chart / Table: Amazing animal jumps
| Animal | Jump |
|---|---|
| Frog | About 20 times its length |
| Kangaroo | Up to 9 metres |
| Flea | About 200 times its height |
| Grasshopper | About 20 times its length |
Think and try
A grasshopper 5 cm long jumps 20 times its length. How far is that in cm? In metres? Now compare: is that farther than a 90 cm jump? Show your conversion step.
Practice set — try it yourself
- A frog 10 cm long jumps 20 times its length. How far in cm? In metres?
Hint: Multiply, then convert. - Which jumps farther: 2 m or 180 cm?
Hint: Convert to the same unit. - A grasshopper 4 cm long jumps 20 times its length. How far?
Hint: Multiply. - A kangaroo jumps 9 m. How many cm is that?
Hint: Multiply by 100. - Why can small animals jump so far for their size?
Hint: Think about their strong legs.
How to use this page: Read the summary, say the Key Terms in your own words, then try the practice set without looking. Ask your teacher or parent to check your answers.