Solving Unknowns with Addition and Subtraction Fact Families

Interactive Video
•
Mathematics
•
1st - 6th Grade
•
Hard
Wayground Content
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5 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
How many marshmallows were in the bag to begin with?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain how to find the unknown addend in the equation 9 plus blank equals 22.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
What common mistake might someone make when solving for an unknown in a subtraction problem?
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the equation that represents the relationship between the number of marshmallows eaten and the number left?
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
How can you represent the fact family for the numbers 26 and 7?
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