Estimating Sums of Fractions and Mixed Numbers Using a Number Line

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Skill:

Estimate sums and differences with fractions and mixed numbers.

Estimating Sums of Fractions and Mixed Numbers Using a Number Line

Explore the sum of fractions and mixed numbers by resizing bars on a number line. Estimate the length of each bar separately to find an estimated sum.

Putting It All Together

Answer these open ended questions on your own or with others to form deeper math connections.

Open-ended question 1

Describe your strategy for estimating the sum .

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Open-ended question 2

Dalia needs cups of rice for a family dinner. She thinks making 7 cups will give close to the amount of rice she needs. Do you think this a reasonable estimate to use? Why or why not?

Text and maths input