Length & weight
Use a ruler, and choose cm, m, g or kg.
Learn with Kutty
Go one screen at a time. Press Next when you are ready. Tap 🔊 Read to me to listen.
Measure short things in cm, long things in m. Always start the ruler at 0.
Look: Start the pencil at 0. Read where it ends: 7½ cm.
✏️ Your turn!
Type your answer and press Check. Kutty will tell you if it is right.
1How many cm in 3 m?
2How many grams in 2 kg?
3Which is longer: 1 m or 90 cm?
! Careful!
✗Starting at the edge of the ruler.
✓Start at the 0 mark.
✗Adding 2 m and 35 cm as 37.
✓Use the same unit first.
See the whole lesson on one page
Measure short things in cm, long things in m. Always start the ruler at 0.
100 cm = 1 m. 1,000 m = 1 km. For weight, 1,000 g = 1 kg. Put the end of the thing on the 0 of the ruler.
Think of it like thisA fingernail is about 1 cm wide. One big step is about 1 m.
- cm
- Centimetre: a small length.
- kg
- Kilogram: like a packet of sugar.
Solved together
A ribbon is 2 m 35 cm long. Ammu cuts off 80 cm. How long is it now?
Change it all into cm.
2 m 35 cm = 235 cmTake away 80 cm.
235 − 80 = 155 cm155 cm is 1 m and 55 cm.
= 1 m 55 cm
AnswerThe ribbon is 1 m 55 cm long.
Now practise it
Kanakku makes new questions on length & weight every time. It shows the working and gives a hint when you are stuck.