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Chapter 4: We the Travellers , II

The trip is not over yet! In the first travellers' chapter, we added and subtracted distances. Now we level up. We will multiply when a journey repeats, divide when we share a long road into smaller bits, and play with speed, time, and distance , the three friends that travel together.

How long will a bus take to cover 240 km if it moves at 60 km in one hour? How many litres of petrol will a 600-km drive need if the car runs 15 km on one litre? These are classic travel puzzles. Multiplication and division are the keys.

What's inside

  • Multiplying to find the total distance of repeated trips.
  • Dividing to share a long journey or calculate fuel use.
  • The relation between speed, time and distance.
  • Solving word problems mixing all four operations.

How to read this chapter

Read in order. Each page builds on what came before. After every worked example, redo the calculation in your own notebook without looking , that is the only way to remember the method.

Sub-topics

3 pages
01
Multiplying distances
Multiplying to find total distance when a trip is repeated.
02
Dividing distances
Sharing long distances and finding rates with division.
03
Speed, time and distance
Linking speed, time and distance , the three best friends of every journey.

Practice quiz

Answer the questions; explanations appear after each.

Quiz
Chapter 4 : Mixed practice
8 questions · pick the best answer
Q1

A bus travels 80 km/h for 3 hours. Distance covered?

Q2

If 4 buses each carry 65 passengers, total passengers?

Q3

A trip of 420 km is split equally among 7 days. Daily distance?

Q4

A car covers 360 km in 4 hours. Average speed?

Q5

Time to travel 200 km at 50 km/h?

Q6

12 boxes of sweets, each 25 pieces. Total pieces?

Q7

Divide 945 by 9.

Q8

A train at 60 km/h travels for 2 hours 30 minutes. Distance?