Solve the Expression: 10+5-3 Step by Step

Addition and Subtraction with Multiple Operations

Solve:

10+53 = 10+5-3\text{ }=

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Step-by-step written solution

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1

Understand the problem

Solve:

10+53 = 10+5-3\text{ }=

2

Step-by-step solution

To solve 10+53 10+5-3 follow these steps:

1. 10+5=15 10 + 5 = 15

2. 153=12 15 - 3 = 12

So the answer is 12 12 .

3

Final Answer

12

Key Points to Remember

Essential concepts to master this topic
  • Order: Work left to right for addition and subtraction operations
  • Technique: First calculate 10 + 5 = 15, then 15 - 3 = 12
  • Check: Count forward 5 from 10, then back 3: 10→15→12 ✓

Common Mistakes

Avoid these frequent errors
  • Calculating subtraction before addition
    Don't solve 5 - 3 = 2 first, then 10 + 2 = 12! This ignores left-to-right order and can give wrong answers in other problems. Always work from left to right when operations have equal priority.

Practice Quiz

Test your knowledge with interactive questions

\( 8 - 2 + 6 = \)

FAQ

Everything you need to know about this question

Why do I work from left to right instead of doing addition first?

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Addition and subtraction have equal priority in the order of operations! When operations have the same priority, you must work left to right. This prevents confusion in more complex problems.

What if I get confused about which operation to do first?

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Remember PEMDAS: Parentheses, Exponents, Multiplication/Division (left to right), Addition/Subtraction (left to right). Since this problem only has addition and subtraction, go left to right!

Does it matter if I group the operations differently?

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Actually, for this specific problem 10+53 10+5-3 , you get the same answer either way because of how numbers work. But always follow left-to-right to build good habits for harder problems!

How can I double-check my answer quickly?

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Try working backwards: Start with your answer 12, add 3 to get 15, then subtract 5 to get 10. If you get the first number from the problem, you're correct!

What if the problem had bigger numbers?

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The same rule applies! Work left to right, one step at a time. You might want to write down your intermediate steps to avoid mental math errors with larger numbers.

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