Fractions Operations Rules Review

What is the rule for dividing with fractions?

• turn both fractions upside down then multiply

• change the division sign, then multiply

• keep, change, flip

• find a common denominator

When you ADD or SUBTRACT fractions, you need to have a COMMON DENOMINATOR first

• TRUE

• FALSE

When you MULTIPLY fractions, you _______

• cross-multiply

• multiply straight across

• find a common denominator

• keep, change, flip

if you are adding 1/2 and 3/4, which one of the answers CANNOT be a common denominator?

• 2

• 4

• 8

• 100

1/6 + 2 1/4

• 29/12

• 12/29

• 11/5

2 ÷ 3/5

• 3/10

• 5/6

• 6/5

• 10/3

4 1/2 - 3 1/5

• 1 1/7

• 1 1/3

• 3/10

• 1 3/10

3/4 × 1/2

• 3/2

• 3/8

• 1/2

• 2/3