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She puts 2 beads on the hundreds spike, 3 beads on the tens spike and 4 beads on

the ones spike. This represents 2 hundreds, 3 tens and 4 ones.

Thus, the abacus shows the number 234, read as two hundred thirty-four.

Now, look at the abacus given alongside.

It has 5 hundreds, 0 tens and 9 ones.

So, the abacus shows the number 509, read as H T O

five hundred nine. No beads in the tens

place means 0 tens.

Knowledge Desk
Think Tank
ABACUS is the standard form of Abundant Beads, A spike cannot have more than 9
Addition and Calculation Utility Systems. beads. Can you think why?

Practice time 1C

1. Write the numbers shown on the abacus. One has been done for you.

(a) (b) (c) (d)

H T O H T O H T O H T O

243

2. draw beads on each abacus to represent the given number.

(a) (b) (c) (d)

H T O H T O H T O H T O

194 371 490 798

Think Tank Critical Thinking PLaCE VaLUE aND FaCE VaLUE
Mishka has an abacus with
3 spikes showing hundreds, tens and Place Value
ones respectively. She has 3 beads.
Which is the smallest 3-digit number The place value of a digit in a number depends
that can be formed by these beads? upon its place or position in the number.

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