Page 36 - Revised Maths Wisdom Class - 1

34 MATHS

Less means fewer. We use '<' sign to denote less number of objects and read it as
'less than'.

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› '<' sign is read as 'less than'.
› Closed side of '<' has smaller number.
2
› A one-digit number is always less than a
5 two-digit number.
For example, 3 < 13, 7 < 21, etc.
9

Here, 2 balls are less than 5 balls. Hence, 2 < 5 or 2 is less than 5.

5 balls are less than 9 balls. Hence, 5 < 9 or 5 is less than 9.

Comparison of 2-digit Numbers

We compare numbers by comparing their tens and ones digits.

To compare 2-digit numbers (10 to 50), we follow these steps.

Step 1. Compare the digits at tens place. The number with greater

tens digit is larger.

Step 2. If tens digits are equal, compare the digits at ones place. The
number with greater ones digit is larger.

Let us compare 34 and 28.

34 28

3 tens 4 ones 2 tens 8 ones

3 tens > 2 tens
So, 34 > 28

Let us compare 23 and 25.

23 25
2 tens 3 ones 2 tens 5 ones

2 tens = 2 tens
3 ones < 5 ones
So, 23 < 25