To find an unknown addend, you can use the equation format of addition. For example, if you have the equation (a + b = c) and need to find (b), rearrange the equation to isolate (b) by subtracting (a) from both sides: (b = c - a). This will give you the value of the unknown addend.
missing addend
The addend is one of the numbers that you're adding to find the sum.Ex: 5 + 6 = 11The six would also be an addend.
addend
An addend
Sum
addend
Addend + Addend=Sum
Addend
you have to count up all of the addends
Both are called addend
Addend Addend Sum
addendaddend