Addition Of Three Digit Numbers To One Digit Numbers free online Math quizzes

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In order that a child gets to learn to add three-digit numbers at a quick pace, the practice has to start with the basics of adding simple single digit numbers to the three digit numbers. This seems to be an efficient way as it helps to build the confidence and skills both gradually. This quiz is doing the same task. Few situations could be encountered while solving the questions in this quiz where he or she might have to carry forward the resulting numbers. A great way to start with for adding the big number when attempting this quiz.

Learn to add three digit number with one digit number

Addition is an important mathematical operation that is used to find the sum of two or more numbers. In this lesson, we’ll be learning how to add a three-digit number and a one-digit number together.

A three-digit number is a number that has three digits, such as 123, 456, and 789. A one-digit number is a number that has only one digit, such as 1, 2, and 3. To add a three-digit number and a one-digit number together, we use a process called column addition.

Column addition is a method of adding numbers by aligning them in columns and adding them up one column at a time. Let’s look at an example to see how it works.

Example: Let’s say we want to add the numbers 123 and 4.

We’ll start by aligning the numbers in columns, with the ones digits, tens digits, and hundreds digits lined up.

  123
+   4
-----

The first column is the ones digits column. We’ll start by adding the ones digit of the three-digit number and the one-digit number, which are 3 and 4. 3 + 4 = 7, so we write the 7 in the ones digit of the answer.

  123
+   4
-----
  127

We don’t need to worry about carrying over any digits, because the sum of the ones digits is less than 10.

Another example

Example: Let’s say we want to add the numbers 876 and 5

  876
+   5
-----

We start adding the ones digit, in this case 6+5=11 so we write 1 in the ones digit of the answer and carry over the 1.

  876
+   5
-----
   1

Since there is no tens digit, we just add the carry over digit to the hundreds digit. 8+1=9 so we write 9 as our answer

  876
+   5
-----
 981

As you can see in this example, when adding three digit numbers to one digit numbers, if the sum of the ones digit is greater than 9, we just carry over the extra digit and add it to the tens digit.

You can use this method when adding a three digit number to any one digit number, or even when adding any two digit number to one digit number.

It is also important to understand that when adding any two numbers together, the process of carrying over is necessary when the sum of any column is greater than 9.

Remember to always line up the digits in columns and add them one column at a time, and always check if carrying over is necessary. Practice makes perfect, so keep practicing adding three digit numbers and one digit numbers together!