NCERT Solutions for Class 4th Maths Chapter 7 Ram Chacha’s mangoes and Ranganna’s dolls — Let Us Solve
Book page 108 Updated on2026-09-19
Q1.
Estimate the answer. _________ (Ram Chacha’s mangoes)
Answer
About 270 mangoes.
527 → about 530 264 → about 260 530 − 260 = about 270
Why it happens: Rounded to tens the two numbers are easy to subtract, and the answer stays close to the real one.
Tip: An estimate is not the exact answer. It only tells us roughly what to expect, so a silly mistake is easy to spot.
Q2.
Ram Chacha got 264 mangoes from his mango tree last year. This year he got 527 mangoes. How many more mangoes did he get this year?
Answer
He got 263 more mangoes this year.
More mangoes = 527 − 264
The working, written in columns.
7 − 4 = 3 ones 2 tens cannot give 6 tens → regroup 1 H = 10 T 12 − 6 = 6 tens, 4 − 2 = 2 hundreds = 2 H + 6 T + 3 O = 263
Why it happens: Asking “how many more” means finding the difference, so we take the smaller number away from the bigger one.
Check it yourself: 264 + 263 = 527.
Q3.
Estimate the answer. _________ (Ranganna’s dolls)
Answer
About 110 dolls.
639 → about 640 531 → about 530 640 − 530 = about 110
Why it happens: Both numbers move by 1 only, so the estimate is very near the true answer.
Tip: An estimate is not the exact answer. It only tells us roughly what to expect, so a silly mistake is easy to spot.
Q4.
4. During the festival of dolls (Gombe Habba in Dussehra), Ranganna made 639 dolls. He was able to sell 531 dolls. How many dolls are left with him? No. of dolls left = _____________________