# 2-Digit Numbers on Abacus | What is an abacus?

We’ve details about them and those. Now let’s learn to show two-digit numbers on an abacus.

What’s an abacus?

Abacus is a instrument or toy for counting. An abacus with two sticks.

We’re studying 2-digit numbers on an abacus, so this abacus consists of two sticks: the tens bar and those bar. Every stick can have as much as 9 beads.

For instance:

one. get quantity 10

10 = 1 bead on tens bar

and 0 beads on a stick

So 10 = 1 ten and 0 ones.

That is the expanded type of 10.

The quantity could be written in phrases as ten.

2. get quantity 21

21 = 2 beads on tens bar

and 1 bead on a stick

So 21 = 2 tens and 1 ones.

That is the expanded model of 21.

The quantity could be written as twenty-one.

3. get quantity 35

35 = 3 beads on tens bar

and 5 beads on a stick

So 35 = 3 tens and 5 ones.

That is the expanded type of 35.

The quantity could be written as thirty-five.

4. get quantity 55

55 = 5 beads on the tens bar and 5 beads on those bar

So 55 = 5 tens and 5 ones.

That is the expanded model of 55.

The quantity could be written as fifty-five in writing.

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Three-digit numbers are from 100 to 999. We all know that there are 9 single digit numbers i.e. 1, 2, 3, 4, 5, 6, 7, 8 and 9. There are 90 two-digit numbers, i.e. from 10 to 99. one digit numbers