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Chapter 7 · NCERT Class 4 Maths Mela

The Cleanest Village

A village plans a clean-up: teams, bins, brooms and trees to count and share. Multiplication makes equal groups fast; division shares them fairly. Tap each idea to explore it.

✖️ 3 topics⏱ ~19 min📝 10-question quiz
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Play with it

Six story-sum ideas

Word problems use × and ÷ on equal groups. Tap each term to see what it means, with an example.

Explore · Times & Sharetap a term

Learn

The three big ideas

  • Multiplication is a quick way to add equal groups.
  • 6 buckets with 4 litres each is 6 × 4 = 24 litres — much faster than adding 4 six times.
  • The two numbers are the number of groups and the size of each group.

Worked example. A clean-up team plants 5 rows of trees with 8 trees in each row. How many trees?

5 rows × 8 trees = 40 trees planted.

  • Division shares a total equally or makes equal groups.
  • 36 brooms shared among 9 helpers is 36 ÷ 9 = 4 brooms each.
  • If something is left over, it cannot be shared evenly.

Worked example. 42 dustbins are placed equally along 6 streets. How many bins per street?

42 ÷ 6 = 7 dustbins on each street.

  • Some problems need two steps. Read carefully and decide the order.
  • First find one part (often by multiplying), then add or take away.
  • Always check: does the final answer make sense for the story?

Worked example. 3 teams each collect 12 kg of waste. They give away 10 kg. How much is left?

First 3 × 12 = 36 kg collected. Then 36 − 10 = 26 kg left.

Common mix-up: Read the question twice. Doing the steps in the wrong order — adding before multiplying — gives a wrong answer.

Where you’ll meet it

Times and sharing around us

Village clean-up

Counting bins, brooms and teams uses multiplication and division to plan fairly.

Cooking for many

A cook making 4 plates with 3 rotis each needs 4 × 3 = 12 rotis. Kitchens love multiplication.

Saving money

Buying 5 notebooks at 8 rupees each, then a 2-rupee pen, is a two-step money problem.

Check yourself

Quick quiz

Ten friendly questions — mostly multiple-choice with one assertion–reason — to check you can solve story sums.

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Interactive built to the OpenMAIC approach (THU-MAIC, MIT). Content from the NCERT Class 4 Maths Mela textbook (ncert.nic.in).

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