Dividing Mixed Numbers and Area Problems

What is the formula to find the area of a rectangle?

• Length - Width

• Length + Width

• Length x Width

• Length / Width

If you know the area and the length of a rectangle, how can you find the width?

• Add the length to the area

• Multiply the area by the length

• Divide the area by the length

• Subtract the length from the area

How do you convert a mixed number to an improper fraction?

• Divide the whole number by the denominator

• Multiply the whole number by the denominator and add the numerator

• Add the whole number to the numerator

• Multiply the whole number by the numerator and add the denominator

What is the first step in solving an area problem with mixed numbers?

• Multiply the mixed numbers

• Convert mixed numbers to improper fractions

• Divide the mixed numbers

• Add the mixed numbers

What should you do after converting mixed numbers to improper fractions?

• Divide the fractions

• Subtract the fractions

• Multiply by the reciprocal of the divisor

• Add the fractions

What is the greatest common factor (GCF) used for in solving these problems?

• To add fractions

• To divide fractions

• To cross-cancel and simplify the equation

• To multiply fractions

What is the result of 7 times 3 in the example problem?

• 10

• 24

• 21

• 14

What is the final step in solving an area problem involving mixed numbers?

• Divide the quotient by the given measure

• Write the quotient as a mixed number and label with the given measure

• Multiply the numerator and denominator

• Convert the quotient to a whole number

What mistake might occur if you use the GCF before converting to multiplication by the reciprocal?

• You might get a whole number instead of a fraction

• You might add the fractions incorrectly

• You might multiply the fractions incorrectly

• You might divide the fractions incorrectly

What is the correct answer for the example problem involving 3/16 divided by 8/14?

• 21/64

• 21

• 42

• 42/2