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Zero and the Order
Properties of Addition
Correct Answers:
1.
2 + 1 = 1 +
2.
5 + 4 =
+ 5
3.
4 + 6 =
+ 4
4.
8 + 2 =
+ 8
5.
+ 3 = 3 + 6
6.
5 + 2 =
+ 5
7.
0
+
6
0
+
1
0
+
4
5
+
0
8.
7
+
0
9
+
0
5
+
0
0
+
3