Common Core: 1st Grade Math : Find the Missing Number in Addition and Subtraction Equations: CCSS.MATH.CONTENT.1.OA.D.8

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

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Example Questions

Example Question #622 : Operations & Algebraic Thinking

Fill in the blank. 

__________ 

Possible Answers:

Correct answer:

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. , which means .

Example Question #623 : Operations & Algebraic Thinking

Fill in the blank. 

__________ 

Possible Answers:

Correct answer:

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. , which means .

Example Question #111 : Working With Addition And Subtraction Equations

Fill in the blank. 

__________ 

Possible Answers:

Correct answer:

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. , which means .

Example Question #625 : Operations & Algebraic Thinking

Fill in the blank. 

__________ 

Possible Answers:

Correct answer:

Explanation:

 To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. , which means .

Example Question #626 : Operations & Algebraic Thinking

Fill in the blank. 

__________ 

Possible Answers:

Correct answer:

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. , which means .

Example Question #627 : Operations & Algebraic Thinking

Fill in the blank: 

__________ 

Possible Answers:

Correct answer:

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. , which means .

Example Question #628 : Operations & Algebraic Thinking

Fill in the blank. 

__________ 

Possible Answers:

Correct answer:

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. , which means .

Example Question #621 : Operations & Algebraic Thinking

Fill in the blank. 

__________ 

Possible Answers:

Correct answer:

Explanation:

To find the missing piece of an addition problem, you can take the biggest number minus the smallest number. , which means .

Example Question #181 : How To Add

Fill in the blank. 

__________

 

 

Possible Answers:

Correct answer:

Explanation:

This question is asking what can we add to  to get to 

We can count up from  until we get to , and count the number of numbers we had to add after 

We have to add  numbers to get from  to 

Or we can subtract to find the missing number. 

Example Question #121 : Working With Addition And Subtraction Equations

Fill in the blank. 

__________

 

 

Possible Answers:

Correct answer:

Explanation:

This question is asking what can we add to  to get to 

We can count up from  until we get to , and count the number of numbers we had to add after 

We have to add  numbers to get from  to 

Or we can subtract to find the missing number. 

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