Exploring Rational Numbers on a Number Line

This video tutorial teaches how to model addition problems on a number line, focusing on fractions. It covers finding a common denominator, setting up a number line, and solving examples with both positive and negative fractions. The video includes step-by-step demonstrations and encourages viewers to practice independently.

Why is it important to have a common denominator when modeling addition on a number line?

• It makes the fractions whole numbers.

• It makes the fractions easier to add.

• It simplifies the fractions.

• It helps in setting up the number line accurately.

Tags

CCSS.4.NF.B.3A

What is the common denominator chosen for the fractions 4/5 and 1/2?

• 5

• 2

• 20

• 10

How many tenths make a whole number on the number line?

• 5

• 10

• 20

• 15

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

In the first example, what is the result of adding 8/10 and -5/10?

• 1/10

• 3/10

• 8/10

• 5/10

Tags

CCSS.7.NS.A.1C

What common denominator is chosen for the fractions -4 and -6 in the second example?

• 6

• 8

• 10

• 12

Tags

CCSS.7.NS.A.1C

Where is the zero placed on the number line for the second example?

• To the right

• At the end

• To the left

• In the middle

Tags

CCSS.2.MD.B.6

What is the result of adding -3/12 and -2/12 in the second example?

• -7/12

• -1/12

• -5/12

• -6/12

Tags

CCSS.7.NS.A.1C

What is the common denominator for the viewer's problem?

• 27

• 30

• 18

• 15

What is the result of adding -8/27 and 15/27 in the viewer's problem?

• 3/27

• -3/27

• 7/27

• -7/27

Tags

CCSS.7.NS.A.1C

What is the simplified form of -3/27?

• -3/9

• -1/27

• -1/9

• -1/3