Dividing Rational Numbers: Key Concepts and Examples

What is the first step in dividing rational numbers?

• Change the division symbol to multiplication

• Add the fractions

• Flip the first fraction

• Keep the first fraction the same

What is the term used for flipping a fraction upside down?

• Opposite

• Reciprocal

• Reverse

• Inverse

What is the greatest common factor of 30 and 45?

• 15

• 5

• 10

• 20

What does the cross-cancelling technique help with?

• Changing fractions to decimals

• Adding fractions

• Reducing fractions before multiplication

• Finding the reciprocal

Which numbers are compared in the cross-cancelling technique?

• Numbers in the denominator

• Numbers in the numerator

• Numbers diagonally across from each other

• Numbers in the same fraction

What must be done to mixed fractions before dividing?

• Convert them to improper fractions

• Add them together

• Change them to decimals

• Flip them upside down

How do you convert 2 and 1/4 to an improper fraction?

• 6/4

• 9/4

• 8/4

• 7/4

What is the result of multiplying 9 by 16?

• 154

• 144

• 134

• 124

What is the greatest common factor of 36 and 108?

• 24

• 18

• 36

• 12

Which method is preferred for larger numbers?

• Changing to decimals

• Basic method

• Cross-cancelling technique

• Adding fractions