Mastering Multiplication of Mixed Numbers

What is the first step in multiplying two mixed numbers?

• Multiply the denominators

• Convert them to improper fractions

• Simplify the fractions

• Add the whole numbers

Tags

CCSS.5.NF.B.6

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

• Multiply the whole number by the numerator

• Add the whole number to the denominator

• Divide the numerator by the whole number

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

What is the result of multiplying 6 and 1/4 by 1 and 2/3?

• 9 and 7/12

• 11 and 1/3

• 10 and 5/12

• 10 and 1/4

Tags

CCSS.5.NF.B.6

When multiplying a mixed number by a whole number, what should you do with the whole number?

• Leave it as it is

• Multiply it by the denominator

• Add it to the numerator

• Convert it to a fraction by putting it over 1

What is the result of multiplying 5 and 5/6 by 3?

• 17 and 1/2

• 16 and 1/2

• 18 and 1/3

• 15 and 5/6

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

How do you multiply a mixed number by a fraction?

• Multiply the whole number by the fraction

• Convert the mixed number to an improper fraction

• Add the numerator and denominator

• Convert the fraction to a mixed number

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

What is the result of multiplying 4 and 1/4 by 3/5?

• 4 and 3/10

• 2 and 9/20

• 3 and 1/5

• 2 and 11/20

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

What is cross cancellation?

• Simplifying fractions before multiplying

• Converting mixed numbers to improper fractions

• Multiplying the fractions directly

• Adding the numerators and denominators

Tags

CCSS.5.NF.B.6

Which pairs of numbers can be cross-cancelled in the multiplication of 10 and 1/8 by 4 and 4/9?

• 10 and 4

• 1 and 9

• 81 and 9

• 8 and 40

Tags

CCSS.5.NF.B.6

What is the final result of multiplying 10 and 1/8 by 4 and 4/9 using cross cancellation?

• 35

• 40

• 45

• 50

Tags

CCSS.5.NF.B.6