Chapter 13 · NCERT Class 1 Joyful Mathematics

So Many Toys

So many toys to count! When there are too many, we make bundles of ten. Then counting is easy: count the tens, then the loose ones. We learn numbers all the way to 99. Tap a word to start counting!

🧸 3 topics⏱ ~12 min📝 8-question quiz

Play with it

Five big-number words

Bundling toys into tens makes a huge pile easy to count. Tap each word to see how.

Explore · Tens & onestap a word

Learn

Three big-number ideas

When there are many toys, put them in groups of ten — these are bundles.
Count the bundles in tens: 10, 20, 30, …
Bundling helps us count a big pile quickly and without mistakes.

Let us try. You have 3 bundles of ten blocks and 2 loose blocks. How many blocks?

3 tens are 30, and 2 ones more make 32 blocks.

A two-digit number is made of tens and ones.
24 means 2 tens and 4 ones (20 + 4).
The first digit tells the tens, the second tells the ones.

After 9 comes 10; after 19 comes 20; after 29 comes 30, and so on.
Counting in tens (10, 20, 30, … 90) helps us jump up quickly.
The biggest two-digit number is 99 — that is 9 tens and 9 ones.

Remember: in 32, the 3 means 3 tens (thirty), not three ones. The place of a digit tells its value.

Where you'll use it

Big numbers around us

Counting a big collection

Counting 40 stickers? Make 4 bundles of ten. Counting bundles is faster and you will not lose your place.

Packets in a shop

Biscuits often come ten to a packet. Three packets and two loose biscuits are 30 + 2 = 32 biscuits.

Class strength

If your class has 3 tens and 5 ones of children, that is 35 friends — easy to count in tens.

Check yourself

Practice quiz

A friendly set of questions about bundles of ten, tens and ones, and counting numbers up to 99.

Score 0/8

Buffyyour study buddy

Hi! Ask me about bundles of ten, tens and ones, place value, or counting numbers up to 99.

Buffy is an AI helper and can be wrong — always check your NCERT textbook.