To do addition, you need to know how to count. Let's do the problem 4+5. Start from four, and count five numbers. One, two, three, four, five. (Starting at four) Five, six, seven, eight, nine. 4+5=9.
Here is some practice:
5+6
2+1
3+2
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Sum is addition.
Subtraction is used to check addition.
addition
Addition is putting things together
The answer to an addition problem is called the sum.
Sum is addition.
Subtraction is used to check addition.
Addtion
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what is the answer for a addition math problem
kind of an addition
Subtraction is the opposite of addition.
The opposite of addition is subtraction.