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解題步驟

1. Understand the question

   How to add and subtract fractions

2. Response

   Oh, fractions can be tricky at first but once you get the hang of it, it’s not so bad! The key thing is making sure the denominators (the bottom numbers) are the same.

   Like, if you’re adding 1/4 + 2/4, since the denominators are already 4, you just add the top numbers: 1+2=3, so 3/4. Same with subtraction: 3/5 - 1/5 = 2/5.

   If the denominators are different, you have to find a common denominator first. Let’s say 1/2 + 1/3. The smallest number both 2 and 3 go into is 6. So convert 1/2 to 3/6 (multiply top and bottom by 3) and 1/3 to 2/6 (multiply top and bottom by 2). Then add 3/6 + 2/6 = 5/6. Subtraction works the same way—convert to common denominators first, then subtract the numerators.

   Does that make sense? Want me to walk through a specific example with you?

3. Final answer

   Oh, fractions can be tricky at first but once you get the hang of it, it’s not so bad! The key thing is making sure the denominators (the bottom numbers) are the same.

   Like, if you’re adding 1/4 + 2/4, since the denominators are already 4, you just add the top numbers: 1+2=3, so 3/4. Same with subtraction: 3/5 - 1/5 = 2/5.

   If the denominators are different, you have to find a common denominator first. Let’s say 1/2 + 1/3. The smallest number both 2 and 3 go into is 6. So convert 1/2 to 3/6 (multiply top and bottom by 3) and 1/3 to 2/6 (multiply top and bottom by 2). Then add 3/6 + 2/6 = 5/6. Subtraction works the same way—convert to common denominators first, then subtract the numerators.

   Does that make sense? Want me to walk through a specific example with you?

答案

Question Analysis

OCR Text

How to add and subtract fractions

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