Solve: (3/5 × 2/3) + 2/5 | Mixed Fraction Operations

Fraction Multiplication with Mixed Operations

35×23+25= \frac{3}{5}\times\frac{2}{3}+\frac{2}{5}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Make sure to multiply numerator by numerator and denominator by denominator
00:09 Calculate the multiplications
00:18 Multiply the fraction by 3 to find the common denominator
00:22 Make sure to multiply both numerator and denominator
00:28 Calculate the multiplications
00:36 Add with the common denominator
00:40 Calculate the numerator
00:44 Reduce the fraction as much as possible
00:47 Make sure to divide both numerator and denominator
00:54 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

35×23+25= \frac{3}{5}\times\frac{2}{3}+\frac{2}{5}=

2

Step-by-step solution

To solve the problem 35×23+25 \frac{3}{5} \times \frac{2}{3} + \frac{2}{5} , we proceed with the following steps:

  • Step 1: Multiply the fractions 35\frac{3}{5} and 23\frac{2}{3}.

The multiplication yields:

35×23=3×25×3=615\frac{3}{5} \times \frac{2}{3} = \frac{3 \times 2}{5 \times 3} = \frac{6}{15}

  • Step 2: Simplify the product 615\frac{6}{15}.

Both 6 and 15 share a common factor of 3:

615=6÷315÷3=25\frac{6}{15} = \frac{6 \div 3}{15 \div 3} = \frac{2}{5}

  • Step 3: Add 25\frac{2}{5} to the simplified result 25\frac{2}{5}.

Since the fractions 25\frac{2}{5} and 25\frac{2}{5} have the same denominator, add the numerators while keeping the denominator:

25+25=2+25=45\frac{2}{5} + \frac{2}{5} = \frac{2+2}{5} = \frac{4}{5}

Therefore, the solution to the problem is 45 \frac{4}{5} .

3

Final Answer

45 \frac{4}{5}

Key Points to Remember

Essential concepts to master this topic
  • Order of Operations: Always multiply fractions before adding other terms
  • Technique: Multiply numerators together: 35×23=615=25 \frac{3}{5} \times \frac{2}{3} = \frac{6}{15} = \frac{2}{5}
  • Check: Verify 25+25=45 \frac{2}{5} + \frac{2}{5} = \frac{4}{5} by adding numerators ✓

Common Mistakes

Avoid these frequent errors
  • Adding before multiplying fractions
    Don't add 35+25=55 \frac{3}{5} + \frac{2}{5} = \frac{5}{5} first, then multiply = wrong result! Order of operations requires multiplication before addition. Always multiply 35×23 \frac{3}{5} \times \frac{2}{3} first, then add the remaining fraction.

Practice Quiz

Test your knowledge with interactive questions

Solve the following:

\( \frac{5}{9}:\frac{7}{18}= \)

FAQ

Everything you need to know about this question

Why do I multiply the fractions first instead of adding?

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You follow the order of operations (PEMDAS/BODMAS)! Multiplication always comes before addition, even with fractions. So 35×23 \frac{3}{5} \times \frac{2}{3} must be calculated before adding 25 \frac{2}{5} .

How do I multiply fractions correctly?

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Multiply straight across: numerator × numerator and denominator × denominator. So 35×23=3×25×3=615 \frac{3}{5} \times \frac{2}{3} = \frac{3×2}{5×3} = \frac{6}{15} . Then simplify by dividing both by their GCD.

Why do I need to simplify 615 \frac{6}{15} ?

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Simplifying makes the math easier! Both 6 and 15 are divisible by 3, so 615=25 \frac{6}{15} = \frac{2}{5} . This gives you a cleaner fraction that's easier to work with in the next step.

Can I add 25+25 \frac{2}{5} + \frac{2}{5} without finding a common denominator?

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Yes! Since both fractions already have the same denominator (5), you can add the numerators directly: 2+25=45 \frac{2+2}{5} = \frac{4}{5} . No LCD needed!

How can I check if 45 \frac{4}{5} is the right answer?

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Work backwards! Calculate 35×23=25 \frac{3}{5} \times \frac{2}{3} = \frac{2}{5} , then add 25+25=45 \frac{2}{5} + \frac{2}{5} = \frac{4}{5} . If you get the same result, you're correct!

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