Using Subtraction to Find Missing Numbers

The video tutorial explains how to determine the number of children who voted for strawberry ice cream using a table of known values for other flavors. The instructor demonstrates two methods: adding known values and subtracting from the total. The preferred method involves step-by-step subtraction, ensuring accuracy and understanding of the process. The tutorial emphasizes the importance of showing work to earn full marks.

How many children voted for strawberry?

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What is the total number of children that voted?

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Describe the importance of showing your method in calculations.

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What method can be used to find out how many children voted for strawberry?

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Explain the process of subtracting the known values from the total to find the number of children who voted for strawberry.

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What was the final value of children who chose strawberry?

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What alternative method could be used to find the number of children who voted for strawberry?

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