Solve the Number Sequence: 7-2+6 Step by Step

Order of Operations with Mixed Addition

72+6= ? 7-2+6=\text{ ?}

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1

Understand the problem

72+6= ? 7-2+6=\text{ ?}

2

Step-by-step solution

To solve 72+67 - 2 + 6:

  1. Begin with the subtraction: 72=57 - 2 = 5
  2. Then add the result to 6: 5+6=115 + 6 = 11
  3. Thus, the correct answer is 1111.
3

Final Answer

11 11

Key Points to Remember

Essential concepts to master this topic
  • Rule: Work left to right when operations have equal priority
  • Technique: First calculate 7 - 2 = 5, then 5 + 6 = 11
  • Check: Verify by calculating: 7 - 2 + 6 = 5 + 6 = 11 ✓

Common Mistakes

Avoid these frequent errors
  • Calculating addition before subtraction
    Don't add 2 + 6 = 8 first, then subtract from 7 = wrong answer of -1! This ignores left-to-right order for equal priority operations. Always work from left to right when you have addition and subtraction together.

Practice Quiz

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\( 8 - 2 + 6 = \)

FAQ

Everything you need to know about this question

Why can't I add 2 + 6 first since addition is easier?

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When operations have the same priority (like addition and subtraction), you must work left to right. Changing the order changes your answer completely!

What if I forget which direction to go?

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Remember: Left to Right for same-level operations! Think of reading - you start on the left and move right, just like solving these problems.

Are there any shortcuts for problems like this?

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No shortcuts needed! These problems are already simple. Just follow the left-to-right rule and you'll get the right answer every time.

How do I know if subtraction and addition have equal priority?

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Addition and subtraction are always equal priority in order of operations. Same with multiplication and division. When equal, go left to right!

What happens if I use parentheses?

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Parentheses change everything! 7(2+6)=78=17 - (2 + 6) = 7 - 8 = -1 is completely different from 72+6=117 - 2 + 6 = 11. Always solve what's in parentheses first.

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