Dividing and Multiplying Fractions

The video tutorial explains how to add two fractions, 4/11 and 9/13, by finding a common denominator. It demonstrates calculating the least common multiple of 11 and 13, converting the fractions to have this common denominator, and then adding them. The result is simplified and expressed as a mixed number, 1 and 8/143.

What is the first step in adding fractions with different denominators?

• Multiply the numerators together

• Add the denominators

• Subtract the smaller fraction from the larger one

• Find a common denominator

What is the least common multiple of 11 and 13?

• 130

• 143

• 156

• 121

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

How do you convert 4/11 to a fraction with a denominator of 143?

• Multiply both numerator and denominator by 13

• Add 13 to the numerator

• Subtract 11 from the denominator

• Multiply both numerator and denominator by 11

Tags

CCSS.4.NBT.B.5

What is the result of multiplying 4 by 13?

• 40

• 52

• 44

• 56

Tags

CCSS.4.NBT.B.5

What is the result of multiplying 9 by 11?

• 99

• 81

• 101

• 90

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the sum of 52 and 99?

• 151

• 150

• 153

• 152

What is the simplified form of 151/143?

• 1 and 10/143

• 1 and 9/143

• 1 and 8/143

• 1 and 7/143

Tags

CCSS.4.NBT.B.6

How many times does 143 go into 151?

• 1 time

• 3 times

• 4 times

• 2 times

What is the remainder when 151 is divided by 143?

• 6

• 9

• 7

• 8

Why can't 151/143 be simplified further?

• Because 151 is less than 143

• Because 143 is a prime number

• Because they have no common factors

• Because 151 is a prime number