Estimating Sums and Differences with Benchmark Fractions

The video tutorial covers benchmark fractions, focusing on halves, fourths, and thirds. It uses number lines and models to represent these fractions and compares them visually. The tutorial also demonstrates estimation techniques and problem-solving with fractions, including addition and subtraction. The video aims to enhance understanding of fractions and their relationships through visual aids and practical examples.

What is the purpose of using benchmark fractions in estimation?

• To make calculations more complex

• To simplify and approximate values

• To avoid using fractions

• To increase the number of steps in a problem

On a number line, where is the fraction one-half located?

• In the middle

• At the end

• At the start

• Three-fourths of the way

How many pieces should a shape be split into to represent one-fourth?

• Two

• Five

• Three

• Four

Which fraction is equivalent to two-fourths?

• One-fourth

• Three-fourths

• One-third

• One-half

How does one-third compare to one-half on a number line?

• One-third is greater than one-half

• One-third is less than one-half

• One-third is equal to one-half

• One-third is not a benchmark fraction

What is the equivalent fraction of one-half when the denominator is three?

• Two-thirds

• One point five out of three

• One and a half

• One-third

When estimating one and four-fifths, what is it closest to?

• One

• Two and a half

• One and a half

• Two

What common denominator can be used for adding fractions with denominators 5 and 3?

• 5

• 10

• 15

• 20

What is the result of adding 12/15 and 10/15?

• 1 and 7/15

• 22/15

• 1 and 5/15

• 2/15

When subtracting one and one-fifth from three and three-fifths, what is the result?

• Two and three-fifths

• Two and one-fifth

• Two and two-fifths

• Two and four-fifths