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# Common Core Standard 1.OA.B.3 Questions

Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)

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Grade 1 Fact Families CCSS: 1.OA.B.3
Which is the related addition fact for $3 + 8 = 11$?
1. $8 + 3 = 11$
2. $5 + 6 = 11$
3. $9 + 2 = 11$
4. $6 + 5 = 11$
Grade 1 Fact Families CCSS: 1.OA.B.3
What is the related subtraction fact for $9 - 2 = 7$?
1. $7 - 2 = 5$
2. $8 - 2 = 6$
3. $9 - 7 = 2$
4. $10 - 3 = 7$
$6+4+2=$