NCERT Maths Mela, Class 4, textbook pages 184–202

How to teach Class 4 Maths Chapter 13, The Transport Museum, at home

Multiplying and dividing bigger numbers, taught with things you already have at home: a 10-minute activity, a game for the week, a 5-day plan and the mistakes to watch for.

5 × 10 = 505 × 5 = 255 × 15 = 75

NCERT Class 4 Maths Chapter 13 The Transport Museum: what it teaches

Buses, trains and tempo travellers give big multiplication problems. Your child multiplies by 10, builds tables like the 15 table by splitting (5 × 15 = 5 × 10 + 5 × 5), multiplies two-digit numbers and divides larger numbers.

Why it matters later. Multiplying two-digit numbers by splitting is the idea behind the standard method used in Class 5.

See it: this chapter in pictures

26 × 10= 26 tens= 26010 tens = 100
Multiplying by 10 turns ones into tens.
1 × 15 = 152 × 15 = 303 × 15 = 454 × 15 = 605 × 15 = 756 × 15 = 907 × 15 = 1058 × 15 = 1209 × 15 = 13510 × 15 = 15015 = 10 + 5
Build the 15 table from the 10 and 5 tables.
87087878787878787878787870 ÷ 10 = 87 each
Dividing by 10 is sharing into 10 equal groups.

You need

  • squared paper
  • counters or pebbles
  • paper for arrays

Tonight’s 10 minutes

  1. Show 5 × 15 as a pebble array and split it into 5 × 10 and 5 × 5.
  2. Build the 15 table using the split: 1 × 15 up to 10 × 15.
  3. Multiply 26 × 10: 26 tens = 260. Then 26 × 4 by splitting 20 × 4 + 6 × 4.
  4. Divide 870 bananas equally among 10 monkeys, then among 5.

Words to use

  • times 10
  • split
  • array
  • product
  • divide
  • quotient
  • share

Watch for

  • Forgetting one part when splitting (5 × 15 = 50). Draw the array and colour both parts before adding.
  • Adding a zero for ×10 without understanding. Say it: 26 tens is 260, because 10 tens is a hundred.

What it sounds like at home

A short example of the conversation. Your words will differ; the questions are what matter.

You5 × 15. Split 15.

Your child5 × 10 = 50 and 5 × 5 = 25.

YouTogether?

Your child75.

You26 × 10?

Your child26 tens is 260.

A game for this week: Mystery matrix

  1. Draw a 2 × 2 grid.
  2. Write two products outside a row or column.
  3. Your child finds the single-digit numbers that fit.
  4. Make harder grids for each other.

A 5-day plan, 10 minutes a day

  1. Day 1Split arrays: 5 × 15.
  2. Day 2Build the 15 table.
  3. Day 3Times 10 with tens.
  4. Day 4Two-digit × one-digit by splitting.
  5. Day 5Divide bigger numbers.

Everyday moments to practise

  • Seats in buses of 50.
  • Tickets for a family trip.
  • Packets in cartons.
  • Sharing bananas among monkeys at the zoo.

Quick check

Ask these at the end of the week. Tap to see the answer.

5 × 15?

75.

26 × 10?

260.

870 ÷ 10?

87.

Ready for the next chapter when your child…

  • Multiplies by 10 and explains why.
  • Multiplies two-digit by one-digit numbers by splitting.
  • Divides larger numbers by 10 and small numbers.

Activities, wording and illustrations are Mathify Kids’ own, following the topics of NCERT’s Maths Mela (Class 4). See the full Class 4 parent guide for every chapter.

Questions parents ask

How is multiplication taught in Class 4?

By arrays, splitting numbers into tens and ones, and building tables like the 15 table.

Why does 26 × 10 give 260?

26 tens make 260, because 10 tens make a hundred.

Is long division in Class 4?

Division of bigger numbers is introduced through sharing and grouping; formal long division comes later.