Posted by **desmiyoung** on Wednesday, August 21, 2013 at 5:13pm.

how to do you do missing digits to make each number sentence true

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**Ms. Sue**, Wednesday, August 21, 2013 at 5:33pm
2 + ___ = 10

What number sentence do you want help with?

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**Anonymous**, Monday, September 22, 2014 at 5:40pm
Use structure what property of addition is shown in the following number sentence ?explain7+(3+5)=(7+3)+5

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**Anonymous**, Thursday, November 19, 2015 at 10:25pm
The average of four numbers is 21. If three numbers are 12, 18, and 28, what is the missing number?

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**Anonymous**, Thursday, November 19, 2015 at 10:26pm
The average of four numbers is 21. If three numbers are 12, 18, and 28, what is the missing number?

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