NCERT Solutions for Class 4th Maths Chapter 3 Let Us Count — Let Us Count
Book page 34 Updated on2026-09-19
Q1.
How many coconut trees does Gundappa have? ___________ How do you know?Gundappa’s coconut grove, seen from the top. The trees stand in square blocks.
Answer
Gundappa’s coconut grove, seen from the top. The trees stand in square blocks.
Gundappa has 81 coconut trees.
Do not count the trees one by one. The picture is already made of square blocks, so count a block first.
One block = 3 rows of 3 trees 3 + 3 + 3 = 9 trees in one block The blocks stand in 3 rows, 3 blocks in each row 3 + 3 + 3 = 9 blocks One row of blocks = 9 + 9 + 9 = 27 trees All three rows = 27 + 27 + 27 = 81 trees
How do you know? I counted one block, found 9 trees, and then added the blocks. Because every block looks the same, I did not have to count each tree.
Why it happens: When things are planted in equal groups, you only need to count one group and then add that group again and again.
Tip: A farmer plants trees in rows so that a bullock cart or a water pipe can pass between them. The rows also make the trees easy to count.
Q2.
Gundappa has plucked 5 coconuts from each tree. How many coconuts has he plucked?________Gundappa’s coconut grove, seen from the top. The trees stand in square blocks.
Answer
Gundappa’s coconut grove, seen from the top. The trees stand in square blocks.
He has plucked 405 coconuts.
Every tree gives the same 5 coconuts, so count block by block again.
Why it happens: Adding two equal numbers is easy, so pairing the tall pile with the tall pile keeps the sum simple.
Tip: Put a small mark on the top cup of a pile once you have counted it. Then you will not count the same pile twice.
Q4.
How many coconut laddoos are there in the trays? ____________One tray of Muniamma’s sweets. Three such trays are stacked, all laid out the same way.
Answer
One tray of Muniamma’s sweets. Three such trays are stacked, all laid out the same way.
There are 36 coconut laddoos.
In one tray the laddoos sit on the two slanting lines. They make a cross like the letter X.
The X has 4 arms Each arm has 3 laddoos 3 + 3 + 3 + 3 = 12 laddoos in one tray All the trays are laid out the same way, and there are 3 trays 12 + 12 + 12 = 36 laddoos
Why it happens: The three trays hold the same pattern, so we count one tray and then add it three times.
Tip: The middle place of the tray is not a laddoo — a white peda sits there. Do not count it with the laddoos.
Q5.
How many milk pedas are there in the trays? ____________One tray of Muniamma’s sweets. Three such trays are stacked, all laid out the same way.
Answer
One tray of Muniamma’s sweets. Three such trays are stacked, all laid out the same way.
There are 39 milk pedas.
In one tray the white pedas make a plus sign (+) — one line going down and one line going across.
The down line has 7 pedas The across line has 7 pedas 7 + 7 = 14 But the middle peda lies on both lines, so it was counted twice 14 − 1 = 13 pedas in one tray 3 trays = 13 + 13 + 13 = 39 pedas
Why it happens: The two lines cross at the middle. The sweet at the crossing belongs to both lines, so we count it only once.
Check it yourself: One tray holds 12 laddoos and 13 pedas — that is 25 sweets. Three trays hold 25 + 25 + 25 = 75 sweets, and 36 + 39 = 75 as well.