NCERT Solutions for Class 5th Maths Chapter 1 Travelling, Now and Then — Let Us Do
Book page 10 Updated on2026-09-19
Q1.
1. A cyclist can cover 15 km in one hour. How much distance will she cover in 4 hours, if she maintains the same speed?
Answer
She will cover 60 km.
Step 1 — name what we know. In 1 hour she covers 15 km, and her speed does not change.
Step 2 — add hour by hour.
After 1 hour : 15 km After 2 hours : 15 + 15 = 30 km After 3 hours : 30 + 15 = 45 km After 4 hours : 45 + 15 = 60 km
Step 3 — the short way.
4 × 15 = 60 km
Check it yourself: Go backwards. 60 ÷ 4 = 15 km in one hour, which is what the question said. ✓
Why multiplying works: Each hour adds the same 15 km. Adding the same number 4 times is exactly what 4 × 15 means. Multiplication is a short way of doing repeated addition.
Q2.
2. A school has 461 girls and 439 boys. How many vehicles are needed for all of them to go on a trip using the following modes of travel? (a) Bicycle (2)
Answer
Step 1 — find the total number of children.
461 girls + 439 boys 461 + 439 = 900 children
Step 2 — one bicycle carries 2 people. Share 900 into groups of 2.
900 ÷ 2 = 450
Answer: 450 bicycles are needed.
Check it yourself: 450 × 2 = 900 ✓ Everyone gets a seat and no bicycle is left half empty.
Keep 900 in mind: Every part of this question uses the same 900 children. Only the number of people per vehicle changes.
Q3.
2. (b) Autorickshaw (3)
Answer
Total children = 900. One autorickshaw carries 3.
900 ÷ 3 = 300
Answer: 300 autorickshaws.
Check it yourself: 300 × 3 = 900 ✓
Tip: 900 ÷ 3 is easy if you think of it as 9 hundreds shared among 3 → 3 hundreds each → 300.
Tip: A big car holds 3 times as many as an autorickshaw, so we need one third as many vehicles: 300 ÷ 2 … no — 300 was for 3 people, and 6 is double 3, so 300 ÷ 2 = 150 ✓
Q6.
2. (e) Tempo traveller (10)
Answer
Total children = 900. One tempo traveller carries 10.
900 ÷ 10 = 90
Answer: 90 tempo travellers.
Why it is so quick: Dividing by 10 just removes one zero from the end. 900 → 90.
Check it yourself: 36 × 25 = 900 ✓ (Think of 25 as a quarter of 100: four 25s make 100, so 36 twenty-fives make 9 hundreds.)
Q9.
2. (h) Aeroplane (180)
Answer
Total children = 900. One aeroplane carries 180.
900 ÷ 180 180 × 5 = 900, leaving 0 So the answer is 5
Answer: 5 aeroplanes.
Check it yourself: 180 × 5 = 900 ✓
Look at the whole list: 450 bicycles · 300 autos · 225 cars · 150 big cars · 90 tempo travellers · 45 boats · 36 minibuses · 5 aeroplanes. The bigger the vehicle, the fewer you need. The number of children never changed — only the size of the groups did.