Solve the Division Problem: 4/7 ÷ 5 Step by Step

Fraction Division with Whole Number Divisors

47:5= \frac{4}{7}:5=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Any number divided by 1 is always equal to itself
00:13 Convert division to multiplication by reciprocal
00:24 Make sure to multiply numerator by numerator and denominator by denominator
00:29 Calculate the multiplications
00:32 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

47:5= \frac{4}{7}:5=

2

Step-by-step solution

To solve the problem of dividing 47\frac{4}{7} by 5, we will follow these steps:

  • Step 1: Understand that dividing by a number is the same as multiplying by its reciprocal.
  • Step 2: Convert the division problem into a multiplication problem using the reciprocal.
  • Step 3: Perform the multiplication of fractions.

Now, let's implement these steps:

Step 1: We have the fraction 47\frac{4}{7} and need to divide it by the whole number 5. In terms of fractions, 5 can be written as 51\frac{5}{1}.

Step 2: Change the division into multiplication. This requires us to multiply 47\frac{4}{7} by the reciprocal of 51\frac{5}{1}, which is 15\frac{1}{5}. Thus, the expression becomes:

47÷5=47×15\frac{4}{7} \div 5 = \frac{4}{7} \times \frac{1}{5}

Step 3: Multiply the fractions. To multiply fractions, multiply the numerators and multiply the denominators:

47×15=4×17×5=435\frac{4}{7} \times \frac{1}{5} = \frac{4 \times 1}{7 \times 5} = \frac{4}{35}

Therefore, the final result of dividing 47\frac{4}{7} by 5 is 435\frac{4}{35}.

3

Final Answer

435 \frac{4}{35}

Key Points to Remember

Essential concepts to master this topic
  • Division Rule: Dividing by a number equals multiplying by its reciprocal
  • Technique: Convert 47÷5 \frac{4}{7} \div 5 to 47×15 \frac{4}{7} \times \frac{1}{5}
  • Check: Multiply result by divisor: 435×5=47 \frac{4}{35} \times 5 = \frac{4}{7}

Common Mistakes

Avoid these frequent errors
  • Dividing denominators instead of using reciprocal multiplication
    Don't divide 7 by 5 to get 435 \frac{4}{35} = wrong process! This might give the right answer by accident but shows no understanding. Always convert division to multiplication by the reciprocal first.

Practice Quiz

Test your knowledge with interactive questions

\( \frac{1}{2}:3= \)\( \)\( \)\( \)

FAQ

Everything you need to know about this question

Why can't I just divide the denominator by 5?

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Dividing just the denominator would be like doing 47÷5=475 \frac{4}{7 \div 5} = \frac{4}{\frac{7}{5}} , which is completely different! Always use the reciprocal method to avoid confusion.

What's the reciprocal of a whole number like 5?

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The reciprocal of any whole number is 1 over that number. So 5 becomes 15 \frac{1}{5} , 3 becomes 13 \frac{1}{3} , and so on.

Do I need to simplify 435 \frac{4}{35} ?

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Check if 4 and 35 have any common factors. Since 4 = 2×2 and 35 = 5×7, they share no common factors, so 435 \frac{4}{35} is already fully simplified!

How do I multiply fractions step by step?

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Follow this pattern: ab×cd=a×cb×d \frac{a}{b} \times \frac{c}{d} = \frac{a \times c}{b \times d} . So 47×15=4×17×5=435 \frac{4}{7} \times \frac{1}{5} = \frac{4 \times 1}{7 \times 5} = \frac{4}{35} .

Why does dividing make the fraction smaller?

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When you divide by a number greater than 1, you're splitting the original amount into more pieces, so each piece becomes smaller. Dividing 47 \frac{4}{7} by 5 gives you one-fifth of 47 \frac{4}{7} !

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