3digit Numbers on an Abacus
We already know about hundreds, tens and ones. Now let us
learn how to represent 3digit numbers on an abacus.
We know, an abacus is a tool or a toy for counting. An
abacus which has three rods.
We are learning three digit numbers on an abacus so, this abacus has three rods: the hundreds rod, the tens rod and the ones rod. Each rod can have a maximum of nine beads.
For Example:
1. Take the number 270
2 beads on hundreds rod and 7 beads on tens rod and 0 beads on ones rod
Thus, expanded form of 270 = 2 hundreds and 7 tens and 0 one.
The number can be written in words as: two hundred and
seventy.
2. Take the number 422
4 beads on hundreds rod and 2 beads on tens rod and 2 beads on ones rod
Thus, expanded form of 422 = 4 hundreds and 2 tens and 2 ones.
The number can be written in words as: four hundred and twentytwo.
3. Take the number 531
5 beads on hundreds rod and 3 beads on tens rod and 1 bead on ones rod
Thus, expanded form of 531 = 5 hundreds and 3 tens and 1 one.
The number can be written in words as: five hundred and
thirtyone.
4. Take the number 506.
5 beads on hundreds rod and 0 beads on tens rod and 6 beads on ones rod
Thus, expanded form of 506 = 5 hundreds and 0 tens and 6
ones.
The number can be written in words as: five hundred and six.
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