Wisechamps Grade 3 Number Names and Number Sense (Session 3)

● Comparing Numbers

● Ascending and Descending Order

● Types of Numbers

Number Sense

Grade 3

Comparison of Numbers

4 3 2 1

3 2 1

5811

905

4-digit
3-digit

Comparing Numbers

First we compare Number of digits.

The number with more digits is greater.

Example: Compare 1374 and 999

1374 > 999 as 1374 has 4 digits and 999 has 3 digits

Comparing Numbers

If number of digits are same, we compare the digit having the highest place.

Example: Compare 7234 and 6798

7234 > 6798 as 7 > 6

Multiple Choice

Which among the given numbers is the smallest number?

• 1020

• 1023

• 1223

• 1230

Explanation

Out of the numbers 1020, 1023, 1223, 1230

Thousands place of all these numbers are same

So we will compare hundreds place

In numbers 1020 and 1023 hundreds place is smaller than other two

numbers

Now we will compare these two numbers

In 1020 and 1023, thousands, hundreds and tens places are same

Now comparing ones place

1020 < 1023

Ascending and

Descending Order Of Larger

Numbers

Ascending Order

Numbers are said to be in ascending order
if they are arranged from the smallest to the largest number

Example:

4321, 4962, 7433, 7494, 8856

are in ascending order

Descending Order

Numbers are said to be in descending order
if they are arranged from the largest to the smallest number

Example:

4736, 4708, 3239, 2325, 1867

are in descending order

Multiple Choice

Which among these is the correct arrangement in descending order:

1452, 1245, 2451, 2453

• 2453, 2451, 1452, 1245

• 2453, 2451, 1245, 1452

• 2451, 1452, 2453, 1245

• 2451, 2453, 1452, 1245

Explanation

In descending order, we write from greatest number

to smallest number

So, the correct descending order is:

2453, 2451, 1452, 1245

Ascending and Descending order

(Mind Map)

Descending order means to arrange the number from bigger to smaller.

For example: 5945, 5034, 5000

Ordening
Numbers

Ascending

Order

Descending

Order

Numbers

Count the

digits

If the number
of digits are

same

If the number
of digits are

different

Number with more
digits are bigger.

For example:
5945 > 534

Ascending order means to arrange the number from smaller to bigger.

For example: 4083, 4156, 5243

Compare the digits from the extreme left until unequal.

For example: 4328 < 4399

Comparing
Numbers

Mathematical

Reasoning

Multiple Choice

How many even numbers lie between 1 and 20?

• 11

• 10

• 20

• 1

Explanation

There are 5 even numbers between each set of ten numbers

So, from 1 to 10 , there are 5 even numbers

From 11 to 20, there are 5 even numbers

21 is an odd number

So, total even numbers are 5 + 5 = 10

Multiple Choice

The salary of four persons is given in the options. Which is the minimum amount of salary?

• र 7830

• र 8873

• र 7738

• र 8730

Explanation

We have the numbers: 7830, 7738, 8873, 8730

Comparing thousands place of all these numbers, we get, 7830 and 7738 are smaller than rest two

So we will compare hundred's place of 7830 and 7738

In numbers 7738, hundreds place digit is smaller than that of 7830

So, 7738 < 7830

Hence, minimum salary amount is र 7738

Multiple Choice

Find the greatest and the smallest numbers from the given list of numbers:

4823, 8234, 1005, 4237, 4037

• 8234, 4823

• 8234, 1005

• 1005, 4237

• 4823, 4037

Explanation

8234 has 8 at the thousands place, the greatest amongst the

thousands place of other numbers

So, 8234 is the greatest

Similarly, 1005 is the smallest out of 4823, 1005, 4237, 4037

Multiple Choice

If we interchange the tens and ones place digits in the numbers given in options, which number will be an odd number?

• 7706

• 6724

• 2217

• 6700

Explanation

Numbers are 7706, 6724, 6700, 2217

If we interchange the tens and ones place digit of the following numbers, we get, 7760, 6742, 6700, 2271

7760, 6742, 6700 have even numbers at ones places, so they are even.

2271 has odd digit in ones place, so 2271 is an odd number

Dropdown

Population of a town A ,B, C, D in the year 2021, is given in the table below. Which town had maximum population in 2021? ​

Select answer

Explanation

Arranging the Population in ascending order

7976 < 9798 < 15237 < 47830

Or, D < C < B < A

Population of town A had maximum

Multiple Choice

Which among the following numbers is an even number and is more than 4010?

• 4008

• 4010

• 4013

• 4012

Explanation

Numbers given in options are 4008, 4010, 4013 and 4012

Here, 4013 > 4010 but is not an even number

Only the even number 4012 is more than 4010

Multiple Choice

In a car race, speeds of four cars are given below. Which among these is the correct descending order of the speeds?

• 148 km/h, 107 km/h, 111km/h, 100km/h

• 148 km/h, 111km/h, 107 km/h, 100km/h

• 111 km/h, 107 km/h, 148 km/h, 100km/h

• 100km/h, 107 km/h, 111km/h, 148 km/h

Explanation

On comparing the speeds of the cars and writing the speeds from highest to lowest, we have:

148 km/h, 111 km/h, 107 km/h, 100 km/h

is the correct descending order

Dropdown

The odd number which is less than 4000 is​

Select answer

.

Explanation

Odd numbers ends with 1,3,5,7,9

3641 and 4007 ends with digit 1 and 7

respectively

So, they are odd numbers

3641 < 4000

4007 > 4000

So, answer is 3641