Solve Mixed Operations: 68 - 34 + 17 Step by Step

Mixed Operations with Left-to-Right Order

Solve:

6834+17 68 - 34 + 17

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Step-by-step written solution

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1

Understand the problem

Solve:

6834+17 68 - 34 + 17

2

Step-by-step solution

First, perform the subtraction: 6834=34 68 - 34 = 34

Next, perform the addition: 34+17=51 34 + 17 = 51

3

Final Answer

51

Key Points to Remember

Essential concepts to master this topic
  • Order Rule: For same-level operations, work strictly from left to right
  • Technique: First calculate 68 - 34 = 34, then add 17
  • Check: Verify final answer: 34 + 17 = 51 matches our result ✓

Common Mistakes

Avoid these frequent errors
  • Doing addition before subtraction
    Don't calculate 34 + 17 = 51 first, then 68 - 51 = 17! This ignores left-to-right order and gives the wrong answer. Always work from left to right when operations have the same priority level.

Practice Quiz

Test your knowledge with interactive questions

\( 8 - 2 + 6 = \)

FAQ

Everything you need to know about this question

Why can't I just add 34 + 17 first since addition is easier?

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Great question! Even though addition might seem easier, order of operations rules require us to work left to right when we have addition and subtraction together. This keeps math consistent for everyone.

What if I accidentally did the addition first and got 17?

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No worries! This is a super common mistake. Just remember: when you see same-level operations (like + and -), always go left to right. Try the problem again step by step!

How do I remember to go left to right?

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Think of it like reading a sentence! We read left to right, so we solve math problems the same way. You can even point to each number as you work through it.

Are there any shortcuts for this type of problem?

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Not really - and that's actually good! Working step by step from left to right prevents mistakes. Plus, showing your work helps you catch errors if something doesn't look right.

What if the numbers were bigger? Would the rule be the same?

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Absolutely! Whether it's 6834+17 68 - 34 + 17 or 268134+217 268 - 134 + 217 , you always work left to right with same-level operations. The size of numbers doesn't change the rules!

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