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Thủ Thuật về How many different 3 digit numbers can be formed by using the digit 0 to 5 without repeating any digit in the number? 2022

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Complete step-by-step solution:
In this question, we are asked how many 3 digit numbers can be formed using the digits 0, 1, 3, 5, 7 where repetition is allowed.
Given digits: 0, 1, 3, 5, 7
Therefore, there are a total of 5 digits.
Now, as we have to form 3 digit numbers, let us draw three boxes.

Nội dung chính

  • What are 3-Digit Numbers?
  • Place Value of
    3-Digit Numbers
  • Expanded Form of 3-Digit Numbers
  • Important Notes on 3-digit Numbers
  • Common Mistakes of Numbers up to 3-Digits
  • Operations on Numbers up to 3-Digits
  • Smallest 3-Digit Number
  • Greatest 3-Digit Number
  • FAQs on Numbers up to 3-digits
  • How Many 3-Digit Numbers are there?
  • Which is the Largest 3 Digit Number?
  • What is the Sum of the Three Largest 3 Digit Numbers?
  • What is the Smallest 3-Digit Number?
  • How Many Even 3-Digit Numbers are there?
  • Can a 3-Digit Number have Two Zeros?
  • Which is the Smallest 3 Digit Number Divisible by 4?
  • Which 3 Digit Number has the Most Factors?
  • How many 3 digit numbers can be formed by using the digits 0 5 7 without repeating any digit in the number?
  • What is the number of 3 digit number that can be formed using the digits 0 1 5 without repeating a digit in any number?
  • How many 3 digit numbers can be formed without repeating?
  • How many 2 digit and 3 digit numbers can be formed by using digits 3 5 6 without repeating any digit?

First box will be hundreds, the second box will be tens and the third box will be ones.
Now, as the number is 3 – digit, the first box cannot use digit 0, because if we use 0 as first digit, the number will not be a 3 digit number. So, only 4 digits that are 1, 3, 5
and 7 can be used in the first box.

Therefore, there are 4 ways to fill the first box.
Now, for the second box, any out of the 5 given digits can be used to fill the box as repetition is allowed.
Therefore,

And for the third box too, we can fill it using any of the 5 given digits. Therefore, we get

So, therefore the total ways for forming 3 digit number will be
$ Rightarrow $Total ways of arrangement $ = 4 times 5 times 5 = 100$
Therefore, a total of $100$ 3
digit numbers can be formed using the digits 0, 1, 3, 5, 7 when repetition is allowed.

Note: Here, note that if repetition were not allowed, then we would have got different answers.
For first digit:
As we have to form a 3 digit number, we cannot use 0 as the first digit. So,

For second digit:
Now, suppose we used 1 as the first digit, so now it cannot be used again for the second and third digit. So, the second digit can be 0, 3, 5 or 7. Therefore,

For third
digit:
Suppose we used 3 as the second digit, so now 3 cannot be used for the third digit. So, the third digit can be 0, 5 or 7. Therefore,

$ Rightarrow $Total numbers formed when repetition is not allowed$ = 4 times 4 times 3 = 48$

3-digit numbers begin with 100 and end on 999. These numbers consist of 3 digits in which the first digit should be 1 or greater than 1 and the remaining 3 digits can be any number from 0 to 9. Learning 3-digit numbers is the building block for higher-digit numbers. Let us explore more about the importance, formation, and place value of numbers up to 3 digit.

1.
What are 3-Digit Numbers?
2.
Place Value of 3-Digit Numbers
3.
Expanded Form of 3-Digit Numbers
4.
Common Mistakes of Numbers up to 3 Digits
5.
Operations of Numbers up to 3 Digits
6.
FAQs on Numbers up to 3 Digits

What are 3-Digit Numbers?

3-digit numbers are those numbers that consist of only 3 digits. They start from 100 and go on till 999. For example, 673, 104, 985 are 3-digit numbers. It is to be noted that the first digit of a three-digit number cannot be zero because in that case, it becomes a 2-digit number. For example, 045 becomes 45.

Place Value of
3-Digit Numbers

Every three-digit number’s value can be found by checking the place value of each digit. Let us consider the number 243. The first digit the rightmost position is said to be units place, so it will be multiplied by 1. Hence, the product is 3 × 1 = 3. Then the second number is 4, and because it is tens place, it is multiplied by 10. The value, therefore, is 4 × 10 = 40. The third number 2 is the hundreds place. So 2 is multiplied by 100
and its value is 2 × 100 = 200. Therefore the number is 200 + 40 + 3 = 243.

Decomposing a 3-digit number: In a three-digit number, there are three place values used – hundreds, tens, and units. Let us take one example to understand it better. Here, 465 is a three-digit number and it is decomposed in the form of a sum of three numbers. As 5 is on the units place, 60 is on the tens place and 400 is on the hundreds place.

Significance of Zero in 3-digit
numbers:
The number zero does not make any contribution to a 3-digit number if it is placed in a position where there are no other non-zero numbers to its left. So how is 303 different from 033 or even 003? In 033, the values are (0 × 100) + (3 × 10) + (3 × 1) = 0 + 30 + 3= 33 which means that the number actually becomes a 2-digit number, i.e., 33, or in the case of 003, it becomes a single-digit number, i.e., 3. In these two examples, the zero does not contribute any value to the
number, so the numbers can be expressed as 33 or 3 as well.

Expanded Form of 3-Digit Numbers

The expanded form of a 3-digit number can be expressed and written in three different ways. Consider a three-digit number
457. The number 457 can be written in one form as 457 = (4 × hundreds) + (5 × tens) + (7 × ones). In the second way, the number 457 can be written as 457 = (4 × 100) + (5 × 10) + (7 × 1). And finally the number 457 can be expanded in the form as 457 = 400 + 50 + 7. All the three ways of writing numbers in the expanded form are correct. Writing a 3-digit number in the expanded form helps to know the constituents of the
number.

Basically splitting or expanding a 3-digit number helps us to understand more about the 3-digit number. By splitting we know the number of hundreds, tens, and units available in the 3-digit number.

Important Notes on 3-digit Numbers

  • 100 is the smallest 3-digit number and 999 is the greatest 3-digit number.
  • A 3-digit number cannot start with 0.
  • 10 tens make 1 hundred which is the smallest 3-digit number and 10 hundred make a thousand which is the
    smallest 4-digit number.
  • A 3-digit number can also have two zeros but the two zeros should be in the tens place and the units place, for example, 100, 200, 300, 400. It is to be noted that the zeros cannot be in the hundreds place because in that case it becomes a 2-digit number. For example, 067 becomes 67.

Common Mistakes of Numbers up to 3-Digits

Some of the common mistakes are observed while writing or
reading a 3-digit number. These mistake in reading and interpreting a 3-digit number is often understood as some other number. In the process of reading, writing, and interpreting a 3-digit number, the place value of the digits should be rightly interpreted. Here we have listed below the three common mistakes often committed by children in writing three-digit numbers.

  • Misconception 1: Children make mistakes identifying numbers when there is a zero in the units place
    or tens place. Example: When asked to read 130 and 103, students may get confused. It helps them to model the numbers through Base-10 blocks. That way they can see the ten’s and one’s place value explicitly.
  • Misconception 2: When asked to write “one hundred twenty-three,” students often write 100 first and then attach 23 to it thus ending up with the number “10023” Fact: This misconception arises due to a superficial understanding of
    place values. Using the base-10 blocks or abacus show children that a digit has different values based on its position.
  • Misconception 3: Sometimes when asked to form the smallest 3-digit number given three digits that include zero, children place the zero in the left-most position. Fact: This is incorrect. Zero cannot be in the hundreds place if we are creating a 3-digit number. For example: the smallest 3-digit number using all digits of 5, 0, and 7 is
    507 and not 057

Operations on Numbers up to 3-Digits

The four arithmetic operations of addition, subtraction, multiplication, and
division can be conveniently performed across 3-digit numbers. In the process of performing these arithmetic operations, the place value of the corresponding number should be rightly matched. An error in matching the place value could result in wrong answers. Here we shall look a simple activity using 3 digit numbers, to help us understand the changing pattern in each of the digits of the hundredth place, ten’s place, and
unit’s place. This activity shall help in a better understanding of the learning needed for the 3 digit numbers.

  • Get students to skip count by 10 and 100 to build fluency with 3-digit numbers. First, start 100. Then start from any random 3-digit number like 136.

  • Help children spot the pattern that when skip counting by 10, the digit in the ones place value does not change. Similarly, when skip counting by 100, the digits in the ones place
    and tens place does not change
    .

  • Use a 100-square grid to build fluency. Let students spot the pattern that moving one row up or down is the same as skip counting by 10. Moving columns (left or right) increases or decreases numbers by 1.

  • Often children are given three digits and asked to find the largest and smallest number three-digit number using all digits. The trick here is to arrange all digits in descending order to find the
    largest number.
    To find the smallest number, arrange all digits in ascending order
    . But keep in mind that if zero is one of the digits, it cannot be placed to the left. E.g. Using the digits 7, 3, and 6, the largest number is 763 (digits in descending order) and the smallest number is 367 (digits in ascending order). Using the digits 4, 0, and 8, the largest number will be 840 but the smallest 3-digit number is 408 and not 048.

Smallest 3-Digit Number

The
smallest 3-digit number is 100 because its predecessor is 99 which is a two-digit number. 3-digit numbers start from 100 and end on 999.

Greatest 3-Digit Number

The greatest 3-digit number is 999 because its successor is 1000 which is a four-digit number. 3-digit numbers start from 100 and end on 999.

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  • Numbers Up to 8 Digits
  • Numbers Up to 9 Digits
  • Numbers Up to 10 Digits

FAQs on Numbers up to 3-digits

How Many 3-Digit Numbers are there?

There are a
total of 900 three-digit numbers. These include the smallest 3 digit number – 100 to the largest 3 digit number – 999. The numbers beyond these 3-digit numbers are the 4-digit numbers, and the numbers less than the 3-digit numbers are 2-digit numbers.

Which is the Largest 3 Digit Number?

The largest 3-digit number is 999. Adding 1 more to it will make it a 4-digit number, that is, 1000.

What is the Sum of the Three Largest 3 Digit Numbers?

The three largest 3-digit
numbers are 997, 998, 999. Their sum is 2994 as 997 +998 +999 = 2994.

What is the Smallest 3-Digit Number?

The number 100 is the smallest 3-digit number. Subtracting 1 from it makes it a 2-digit number. There are a total of 900 three-digit numbers, of which the number 100 is the smallest 3-digit number.

How Many Even 3-Digit Numbers are there?

There are a total of 900 3-digit numbers. Of these half of them are
even numbers and the remaining half are odd numbers. Hence there are 900/2 = 450 even 3-digit numbers.

Can a 3-Digit Number have Two Zeros?

A 3-digit number can have two zeros. The two zeros should be in the tens place and the units place. Some of the examples of 3-digit numbers with two zeros are 100, 200, 300, and 400. It should be
noted that the hundreds place in a 3-digit number cannot have the number 0 because that will make it a 2-digit number. For example, 098 becomes 98.

Which is the Smallest 3 Digit Number Divisible by 4?

The smallest 3-digit number is 100 and we know that it is divisible by 4 because 100/4 = 25. Therefore, we can say that 100 is the smallest 3-digit number which is divisible by 4.

Which 3 Digit Number has the Most Factors?

The 3-digit number that has the most
factors is 840. The factors of 840 can be listed as, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420 and 840.

How many 3 digit numbers can be formed by using the digits 0 5 7 without repeating any digit in the number?

So, a total of 6 distinct numbers can be formed using these digits.

What is the number of 3 digit number that can be formed using the digits 0 1 5 without repeating a digit in any number?

Answer. Step-by-step explanation: if we directly say 105,150,501,510 hence we want 3 digit number. if u want in detail the above pick will help you..

How many 3 digit numbers can be formed without repeating?

n will be the number of digits that are not in 0, 2, 3, 4, 5 and 6. Hence 1, 7, 8, 9. The value of r will be 3, as we need a form 3 digit number only. Hence, 24 3-digits numbers can be formed without using the digits 0, 2, 3, 4, 5 and 6.

How many 2 digit and 3 digit numbers can be formed by using digits 3 5 6 without repeating any digit?

Hence 12, 2-digit & 3-digit numbers can be formed by using the digits 3, 5, 6 without repeating any digit.
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