Estimating Fraction Sums and Differences

This video tutorial covers the estimation of fraction sums and differences using rounding techniques. The strategy involves rounding fractions to benchmarks of 0, 1/2, or 1. Several examples are provided to illustrate the process, including the use of a number line for visualization. The tutorial also addresses mixed numbers and concludes with practice problems that resemble upcoming quiz questions.

What benchmarks are used to estimate fraction sums and differences?

• 0, 1/2, 1

• 0, 1/4, 1

• 0, 2/3, 1

• 0, 1/3, 1

Tags

CCSS.4.NF.A.2

To which benchmark would you round 7/8?

• 0

• 1/2

• 3/4

• 1

Tags

CCSS.4.NF.A.2

If you have the fraction 1/6, to which benchmark would it be rounded?

• 1

• 0

• 1/2

• 1/3

Tags

CCSS.4.NF.A.2

What is the estimated sum of 7/8 and 1/6?

• 1/2

• 1

• 1 1/2

• 2

Using a number line, which fraction is closest to 1/2?

• 5/11

• 2/11

• 9/20

• 1/5

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Which fraction would round to 1 on a number line?

• 5/10

• 4/7

• 2/15

• 9/10

Tags

CCSS.4.NF.A.2

How would you round the mixed number 1 and 8/9?

• 1 1/2

• 1

• 2

• 2 1/2

Tags

CCSS.5.NBT.A.4

What is the estimated sum of 1 and 8/9 plus 3 and 2/11?

• 5 1/2

• 5

• 4 1/2

• 4

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

To which benchmark would you round 3 and 7/12?

• 3

• 4 1/2

• 3 1/2

• 4

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the estimated difference of 3 and 7/12 minus 8/15?

• 3 1/2

• 2 1/2

• 3

• 2