In this lesson, we will learn how to identify the properties of addition we use when adding and use them to solve problems with numbers up to 20.
Q1:
What property is illustrated in the equation 9+0=9?
Q2:
Pick the expression we get when we use the commutative property of addition with the expression 3+9.
Q3:
What property is illustrated in the equation (2+5)+9=2+(5+9)?
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