Page 14 - Math Skill - 4

12 Maths

2. Write the standard form for the following expansions.

(a) 70000 + 4000 + 200 + 50 + 6 (b) 30000 + 6000 + 500 + 70 + 8
(c) 60000 + 7000 + 800 + 90 + 1 (d) 80000 + 50 + 6

Comparing Numbers
To find the greater or smaller number, we follow these steps:

™ If number of digits in two numbers are different, then number with more digits is greater.

™ If number of digits in two numbers are same, then:

X to compare numbers, compare their digits from left to right, that is, from the highest
place value to ones.

X if the digits at a place are equal, compare the digits at the next place on the right.

Let’s Attempt

Example 1: Compare 22002 and 2299.
Solution: 22002 is a 5-digit number and 2299 is a 4-digit number.
Thus, 22002 > 2299

Example 2: Compare 35783 and 35873.
Solution: Both the numbers have 5-digits.

TTh Th H T O TTh Th H T O

3 5 7 8 3 3 5 8 7 3
3 = 3

5 = 5

7 < 8

Thus, 35783 < 35873

Exercise 1.4

1. Tick (3) the correct statements and cross (7) out the incorrect ones.

(a) 4776 > 4876 (b) 16158 > 18935 (c) 18966 < 66980

(d) 17250 < 72772 (e) 29490 < 9499 (f) 71807 > 71800
2. Put the appropriate symbols (> or < ) in the boxes.
Absorbing Facts
(a) 6785 7628 (b) 7864 1786 Palindrome Number

(c) 77800 88779 (d) 53786 29845 It is a number that reads the same as in
forwards or in backwards like 121 or 303.
(e) 18250 22121 (f) 17450 19260 They are like secret codes