Find the sum , then check you answer.
1.
7 Answer
2.
10 Answer
3.
8 Answer
4.
12 Answer
4 + (5 + 4) =
13 Answer
(4 + 7) + 3 =
14 Answer
9 + 4 =
7 + (1 + 4) =
7 + 8 =
15 Answer
Show two ways to group using parentheses ( ). Find the sum.
8 + 1 + 5 =
(8 + 1) + 5 = 14 8 + (1 + 5) = 14 Answer
5 + 4 + 2 =
Answer (5 + 4 ) + 2 = 11 5 + (4 + 2) = 11
3 + 4 + 3 =
(3 + 4) + 3 = 10 3 + ( 4 + 3 ) = 10 Answer
2 + 3 + 5 =
( 2 + 3 ) + 5 = 10 2 + (3 + 5 ) = 10 Answer
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