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Math Worksheets For All Ages

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Math Worksheets For All Ages

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Dividing Whole Numbers by Fractions Word Problems Worksheets

Previously in the curriculum we have worked through solving problems that involved dividing a whole number by a fraction. On this page we will throw that same operation camouflaged inside a real-world word problem. The same basic procedure for solving these types of operations holds here. Once you identify the variables and that the division operation is required, identify which value is the dividend and which is the divisor. Then flip the divisor by finding the reciprocal and also take the opposite operation from division to multiplication. This will result in fraction multiplication problems that you can solve focusing on the product of the numerators and denominators. The exercises that you will find on this page through a series of worksheets and lessons will help understand this process and eventually master them by the time you make your way to the quizzes.

Aligned Standard: Grade 5 Fractions - 5.NF.7

  • Answer Keys - These are for all the unlocked materials above.

Homework Sheets

Some of these problems are truly challenging. I found myself triple checking the answers.

  • Homework 1 - Richard bought a packet of wafers which is 1/6 of a pound. He fills 2 bowls with these wafers in equal amounts. What is the weight of each bowl?
  • Homework 2 - Denise had 1/2 of a pound of cookies. She gave the cookies equally to her 2 daughters. How much did each daughter get?
  • Homework 3 - Bailey made a 1/4 of a pound of donuts. He divided it equally into 2 pieces. What was the weight of each piece?

Practice Worksheets

I definitely encourage children to draw a picture when working on these problems.

  • Practice 1 - Isabel had 1/6 of a pound of pastry. She has to divide it equally into 4 pieces. What was the weight of each piece of pastry?
  • Practice 2 - Brett bought vermicelli that weighed 2/4 of a pound. He distributes the vermicelli into 5 bowls. What is the weight of each bowl?
  • Practice 3 - Rose had 1/3 of a bowl of a hot chocolate. She gave that to her 4 friends. How much of the hot chocolate did each friend get?

Math Skill Quizzes

Again we see how the kitchen and math class meet again.

  • Quiz 1 - Remo bought a muffin that weighed 1/6 of a pound. He distributes the muffin into 3 equal parts. What is the weight of each friend’s muffin?
  • Quiz 2 - Joel had 1/5 of a bundle of candles. He gave it to his 3 friends. How much of the bundle did every friend get?
  • Quiz 3 - Sienna had 1/3 of a pound of popcorn. She has to divide it equally among 7 bowls. What is the weight of each bowl of popcorn?

How to Divide Whole Numbers by Fractions

When you are dividing a whole number with a fraction, you are finding how many groups of the fraction can get fit in the whole. A basic method of dividing whole numbers by fractions is through multiplying the whole number with the reciprocal of the fraction or the inverted copy. This process is easier to understand when you work through a full problem. We will explore this strategy by solving the problem: 7 ÷ ¾

Step 1 : Make the Whole Number an Improper Fraction - You can convert any whole number to a fraction by simply placing it as the numerator over a denominator of 1. When we put this into work for us 7 becomes 7/1. Our problem now looks like this:

7/1 divided by 3/4

Step 2 : Flip the Division Sign to Multiplication While Taking the Reciprocal of Divisor - The divisor is the value that we are dividing by. In this case it is the second fraction (3/4). When we make the divisor a reciprocal, the operation (division) flips to the opposite operation (multiplication). The reciprocal is inverse of a term. So, for 3/4, it is going to be 4/3. Our problem now looks like this:

Flipping Divisor and Operation

Step 3 : Multiply Fractions - Multiply the two fractions with each other. In order to multiply the fractions, first, you need to multiply the numerators with each other. You follow this by doing the same with the denominators. The product of these two fractions will be equivalent to the quotient of the division problem.

Final Solution

Step 4 : Reduce - Simplify the problem is possible. If you have an improper fraction, your teacher might require some change to the mixed number. Usually, the teacher will ask you to reduce the fraction to its lowest possible terms. In our case, there is no common denominator, but we can create a mixed number: 28/3 becomes 9 1/3.

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