Missing Number in the Addition concept will lay a foundation of Basic Addition Facts and helps you to understand the relation of addition with subtraction. While Solving Addition Problems your child will learn to find the missing addend in a sentence. Go through the entire article to be well versed with the details like How to Find the Missing Number in Addition and Solved Examples on the same.
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How to Find Missing Numbers in Addition Sentence?
Go through the below steps and learn how to solve missing numbers in addition problems. Let us learn how to find the missing number in addition having an + sign and = sign.
There are different scenarios in the missing number addition
4+5 =……
Here, the missing number is simply the addition of two numbers before the equal sign.
4+…..=7
If the Missing Number is before the equal sign we will use the counting method to check how many more added to addend makes the resultant.
…..+3 =6
If the Missing Number is at the beginning of the sentence we can subtract the other number next to the plus sign from the total.
Cases in Missing Number Addition
There are three different cases in finding the missing number in addition. They are along the lines
- If the Missing Number is at the end of the missing number sentence. In this case, you can simply add the number together to obtain the missing number.
- If the Missing Number is alone after the + sign. You can use the counting method to check how many more added can result in the value after the equal sign.
- The Other Case is if the Missing Number is at the beginning of the sentence Subtract the other number next to the addition sign from the total.
This guide might help you while dealing with the Missing Number Subtraction Problems. If you want to know how these works refer to the solved examples provided below.
Finding Missing Digits in Addition Examples
Example 1.
Find the Missing Addend in the Sum 4 + ? = 8
Solution:
Since the missing number is alone after the + sign we will use the counting method. Thus, see how many more added to 4 makes the sum 8.
4+4=8
Therefore, 4 added to 4 makes the sum of 8 i.e. 4+4=8
Example 2.
Find How many more make 5 when 3 is added to it i.e.? +3 =5?
Solution:
Given ?+3 =5
Here the missing digit is at the beginning of the Addition Sentence so we will subtract the number next to the + sign from the sum value.
5-3=2
Therefore, 2 when added to 3 produces the total 5.
Example 3.
Find the Sum of 6+3=?
Solution:
Given 6+3=?
Here the Missing Number is at the end of the sentence. So, we simply add the numbers together to obtain the sum.
6+3=9
Therefore, the sum of 6+3 is 9.
Example 4.
What must be added to 6 to make it 9?
Solution:
6+?=9
Here the missing digit is next to the + sign so we will use the counting method. Check how many more added to 6 makes 9
6+3=9
Therefore, 3 must be added to 6 to make it 9.