Unit 3

When fractions are being __________, you can follow the rule "keep, change, flip".

• subtracted

• added

• multiplied

• divided

For the rule "keep, change, flip", what does the "change" refer to?

• change the operation from division to multiplication

• change the operation from subtraction to addition

• change the operation from multiplication to division

• change the operation from addition to subtraction

What does this division problem mean?   30  $\div$  6

• How many groups of 30 are in 6?

• How many groups of 6 are in 30?

If the problem   100  $\div$  25   was written in long division form, which number would be "inside" the long division symbol?

• 100

• 25

What is a mixed number?

• A number that contains a whole number and a proper fraction

• A number that contains a whole number and an improper fraction.

How would you begin to change a mixed number into an improper fraction?

• Multiply the whole number and numerator, and then add the denominator.

• Multiply the whole number and denominator, and then add the numerator.

When multiplying or dividing a mixed number by a fraction, what should you do first?

• keep, change, flip

• change the fraction into a mixed number

• panic

• change the mixed number into an improper fraction

Once you have a fraction times another fraction, what do you do?

• cross multiply

• numerator times numerator, denominator times denominator

• change the operation symbol to division

• flip the numerators and the denominators

How do you begin to change an improper fraction into a mixed number?

• ask yourself "how many times does the denominator go into the numerator?"

• simplify it

• multiply the numerator by the denominator

• ask yourself "what is a number that goes into both the numerator and the denominator?"

What are you doing when you simplify a fraction?

• creating an equivalent fraction that uses smaller numbers

• creating a mixed number

• making the value of the fraction larger