Basics of Multiplication
What is the rule for multiplying fractions?
Multiply the numerators, multiply the denominators, and simplify when needed.
Multiply 2/5 times 3/7
6/35
5/2
A ribbon is 3/4 yard long. If you cut it into 1/2 of its length, how long is the new piece?
3/8 yard
Multiply: 11/12 x 3/8
11/32
Multiply 1/2 times 1/3
1/6
Multiply 4/9 x 2/3
8/27
Multiply 1+1/3 times 2.
Hint. Should be an improper fraction.
8/3
A school bus is 2/3 full. If half of the students leave, how full is the bus now?
1/3 full
Multiply: 4/9 x 6/7 x 3/5
72/315 OR 8/35
True or False: Multiplying fractions always results in a smaller product than the original numbers.
False. If both fractions are greater than 1, the product is larger!
Simply after multiplying: 5/8 times 4/10
1/4
Multiply 3+1/4 x 1+1/2.
39/8 OR 4+7/8
A recipe calls for 3/5 cups of sugar. If you triple the recipe, how much sugar do you need?
9/5 OR 1+4/5 cups
Multiply and simplify: 8/11 x 3/4 x 5/6
5/11
What is 3/4 times 1?
3/4
Remember any fraction times 1 is itself!
Multiply 7/12 x 3/14
Make sure you simplify if needed!
1/8
Multiply 5+2/5 x 3+1/3.
18
270/15 is not simplified.
A car uses 1/4 of a gallon of gas per mile. How much gas is needed for 6+1/2 miles?
13/16 gallons
Find the missing number: ? times 5/6 = 1/2
3/5
If a fraction is multiplied by 0, what is the result?
0
Multiply and convert to a mixed number: 9/5 x 2/3
1 1/5
18/15 = 1+3/15 = 1+1/5
A recipe calls for 1+3/4 cups of flour per batch. How much flour is needed for 2+1/2 batches?
No improper fractions!
4+3/8 cups
A rectangular rug is 2+1/3 feet wide and 4+1/2 feet long. What is the area?
10+1/2 square feet
The length of a garden is 4+2/3 feet and the width is 3+3/5 feet. Find the area of the garden.
Use a mixed number for your answer!
16+4/5 square feet