Let's fill in the blanks and provide the calculations step by step.
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Calculate the total number of short stories:
- Each student writes 13 stories, and there are 17 students: \[ 13 \times 17 \]
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Estimate:
- Round 13 to 10 and 17 to 20 for estimation: \[ 10 \times 20 = 200 \]
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Use the breakup strategy:
- Break 13 into (10 + 3) and 17 into (10 + 7): \[ 13 \times 17 = (10 + 3) \times (10 + 7) \]
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Apply the distributive property: \[ (10 \times 10) + (10 \times 7) + (3 \times 10) + (3 \times 7) \]
- Now calculate each term: \[ 10 \times 10 = 100 \] \[ 10 \times 7 = 70 \] \[ 3 \times 10 = 30 \] \[ 3 \times 7 = 21 \]
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Add all the products together: \[ 100 + 70 + 30 + 21 \] \[ = 221 \]
So the completed text is:
A class of 17 students will work on a writing project. Each student will write 13 short stories for a book. How many short stories will the class write in all? 13 x 17 Estimate. 10 x 20 = 200 Use the breakup strategy. 13 x 17 = (10+3) x (10+7) (10x10) + (10x7) + (3x10) + (3x7) 100 + 70 + 30 + 21 221 stories.
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