Balance Addition Equations - within 20
Consider the equation:
5 + 2 = __ + 6
Let's identify the missing number that makes the equation true.
To find the missing number, first we need to add 5 + 2:
 
5 + 2    =     ? + 6
 
7          =     ? + 6
 
Now, let’s look for the number which when added to 6 gives 7.
 
6 + 1 = 7
 
5 + 2 = 1 + 6
 
So, the missing number is 1.
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Help
The correct answer is
Remember :
The smallest number is the one that comes first while counting.
Solution :
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21,27,23
21 is the smallest number.
 
               
                 
                     
                    