Common Core: 1st Grade Math : Use the Unknown-Addend to Subtract: CCSS.MATH.CONTENT.1.OA.B.4

Study concepts, example questions & explanations for Common Core: 1st Grade Math

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Example Questions

Example Question #12 : Operations & Algebraic Thinking

What can we add to  to get

 

Possible Answers:

Correct answer:

Explanation:

  or as a subtraction problem, .

Example Question #13 : Operations & Algebraic Thinking

What can we add to  to get to  

 

Possible Answers:

Correct answer:

Explanation:

 or as a subtraction problem, .

Example Question #14 : Operations & Algebraic Thinking

What can we add to  to get 

Possible Answers:

Correct answer:

Explanation:

 or as a subtraction problem, .

Example Question #15 : Operations & Algebraic Thinking

What can we add to  to get to  

 

Possible Answers:

Correct answer:

Explanation:

  or as a subtraction problem, .

Example Question #16 : Operations & Algebraic Thinking

What can we add to  to get to  

 

Possible Answers:

Correct answer:

Explanation:

 or as a subtraction problem, .

Example Question #17 : Operations & Algebraic Thinking

What can we add to  to get to  

 

Possible Answers:

Correct answer:

Explanation:

 or as a subtraction problem, .

Example Question #18 : Operations & Algebraic Thinking

What can we add to  to get  

 

Possible Answers:

Correct answer:

Explanation:

 or as a subtraction problem, .

Example Question #19 : Operations & Algebraic Thinking

What can we add to  to get to

 

Possible Answers:

Correct answer:

Explanation:

 or as a subtraction problem, .

Example Question #21 : Operations & Algebraic Thinking

What can we add to  to get 

 

Possible Answers:

Correct answer:

Explanation:

 or as a subtraction problem, .

Example Question #22 : Operations & Algebraic Thinking

What can we add to  to get to  

 

Possible Answers:

Correct answer:

Explanation:

 or as a subtraction problem, .

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