Learn Class 4 Math - Number Sense
Grade 4 Maths focuses on 6 digits numbers.
Here you will learn the place value of 6-Digit numbers, Expanded Forms, Comparison of two numbers, Ascending Order, Descending Order, Indian Number System and International Number System.
Place Value of 6-Digit Number
| Number | Lakh | Ten-Thousands | Thousands | Hundreds | Tens | Ones |
|---|---|---|---|---|---|---|
| 100251 | 1 | 0 | 0 | 2 | 5 | 1 |
| 106972 | 1 | 0 | 6 | 9 | 7 | 2 |
| 675231 | 6 | 7 | 5 | 2 | 3 | 1 |
| 999999 | 9 | 9 | 9 | 9 | 9 | 9 |
Expanded Forms of Six Digit Numbers
Example: Write 654213 in expanded form.
Solution: 654213 = 600000 + 50000 + 4000 + 200 + 10 + 3
Comparison of Two Numbers
Rules for comparing 2 6 digit numbers are as follows:
- Rule 1: Number which contains more digits is greater than the number having less digits.
- Rule 2: When two numbers contain same digits then we compare left most digits of both the numbers.
Number which is having greater digit should be considered as larger number. If the left most digits of both the numbers are same, then we compare the next digits to the right. This process continues till we get a greater digit to decide which number is greater.
Example: Which number is greater? 665785 and 676865
Solution:676865 is greater than 665785 as '7' in ten thousand place for 676865 is greater than '6' in ten thousand place for 665785
Ascending Order
Ascending order means, writing a given group of numbers in increasing order. Let’s have a look at an example...
Example: Arrange the below given numbers in ascending order.
506780, 500789, 506098, 567893
Solution:500789, 506098, 506780, 567893
Descending Order
Descending order means writing a given group of numbers in decreasing order. Let’s have a look at an example...
Example: Arrange the below given numbers in descending order.
156798, 156780, 155634, 165020
Solution:165020, 156798, 156780, 155634
Indian Number System
International Number System
