Estimating Sums and Differences with Fractions

The video tutorial covers estimating sums and differences with fractions using a number line. It begins with an introduction to estimating fractions by determining their proximity to 0, 1/2, or 1. The tutorial provides examples with fractions like 4/12, 11/14, and 3/8, demonstrating how to place them on a number line and estimate their values. It then moves on to adding and subtracting fractions using these estimation techniques, providing step-by-step guidance on how to simplify the process by rounding fractions to the nearest 0, 1/2, or 1.

What is the first step in estimating fractions?

• Draw a number line

• Multiply the fractions

• Convert fractions to decimals

• Divide the fractions

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CCSS.5.NBT.B.7

Where does the fraction 4/12 fall on the number line?

• Exactly at 1

• Closest to 1

• Closest to 0

• Closest to 1/2

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

How many equal parts do you divide the number line into for the fraction 11/14?

• 8

• 10

• 14

• 12

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CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Which value is 11/14 closest to on the number line?

• 1

• 0

• 1/4

• 1/2

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CCSS.4.NF.A.2

What is the estimated value of 3/8?

• 3/4

• 0

• 1/2

• 1

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CCSS.4.NF.A.2

When estimating 5/8, what is its closest value?

• 1

• 1/2

• 3/4

• 0

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CCSS.4.NBT.B.5

What is the estimated value of 3/9?

• 1/3

• 1

• 1/2

• 0

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CCSS.4.NF.A.2

What is the result of adding the estimated values of 5/8 and 3/9?

• 3/4

• 2

• 1/2

• 1

What is the estimated value of 8/10?

• 3/4

• 1/2

• 0

• 1

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CCSS.4.NF.A.2

If 1/4 is equally distant from 0 and 1/2, which value can you choose for estimation?

• 0

• 1/2

• 1

• 1/4

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CCSS.6.NS.C.7A

CCSS.6.NS.C.7B