Math Drills
Multiplying 3 Fractions
C-2Word Problems (Amount per Unit)
What this worksheet covers
Grade 6 (Elementary School) / Multiplication of Fractions / Multiplying 3 Fractions
The center is calculation multiplying three fractions in a row, with word problems in three shapes laid on top: a question applying a percentage twice over, a question multiplying a whole number by two fractions so that the answer comes out whole, and a question using parentheses to gather a sum or a difference into one expression.
In the question gathering into one expression with parentheses, the parentheses get dropped, the first two are multiplied, and the rest is added or subtracted afterward. A paper that went correctly always keeps a stage where what stood inside the parentheses was gathered into a single fraction.
The procedure of producing a product while simplifying is complete here. That procedure works as the part after a division has been rewritten as a multiplication, in Fraction ÷ Whole Number and Whole Number ÷ Fraction.
- 3 Terms, Per-Unit Quantity (Sum and Difference)5 questions
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Problems and answers on this worksheet
These are the problems in “Multiplication of Fractions”, shown with their answers.
(1)There is some milk where 1L weighs 3/4kg. At first there was 3/2L, but 1L was used. What is the weight of the rest in how many kg? Answer □
Answer: 3/8kg
(2)There is some juice where 1L weighs 1/2kg. At first there was 1L, but 2/9L was used. What is the weight of the rest in how many kg? Answer □
Answer: 7/18kg
(3)There is some water where 1L weighs 7/12kg. At first there was 3/4L, but 1/6L was used. What is the weight of the rest in how many kg? Answer □
Answer: 49/144kg
(4)There is 1/3kg of flour per 1L. We used 3/5L yesterday and 5/8L today. What is the total weight of what we used, in how many kg? Answer □
Answer: 49/120kg
(5)There is 3/8kg of sugar per 1L. We used 1/4L yesterday and 1/6L today. What is the total weight of what we used, in how many kg? Answer □
Answer: 5/32kg
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