Solve 69 Minus Circle Symbol: Basic Symbol Substitution Problem

Symbol Substitution with Basic Subtraction

If:

=7 \circ=7

Solve the following subtraction problem:

69= 69-\circ=

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

If:

=7 \circ=7

Solve the following subtraction problem:

69= 69-\circ=

2

Step-by-step solution

To solve this mathematical problem, we utilize the following steps:

  • Step 1: Substitute the value of the symbol \circ into the expression 6969 - \circ.
  • Step 2: Compute the subtraction using the given value.
  • Step 3: Verify the result with the given choices (if applicable).

Let's execute each step:

Step 1: Given that =7\circ = 7, substitute it into the expression: 6969 - \circ.

Step 2: This becomes 69769 - 7. Performing the subtraction:

697=6269 - 7 = 62.

Therefore, the solution to the problem is 62 \boxed{62} .

3

Final Answer

62 62

Key Points to Remember

Essential concepts to master this topic
  • Substitution Rule: Replace symbol with its given numerical value first
  • Technique: Convert 69 69 - \circ to 697=62 69 - 7 = 62
  • Check: Verify =7 \circ = 7 gives 697=62 69 - 7 = 62

Common Mistakes

Avoid these frequent errors
  • Forgetting to substitute the symbol value
    Don't leave the circle symbol \circ as is = you can't subtract a symbol from a number! This makes the problem impossible to solve. Always replace every symbol with its given value before calculating.

Practice Quiz

Test your knowledge with interactive questions

If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?

FAQ

Everything you need to know about this question

What does the circle symbol mean in math?

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The circle symbol \circ is just a placeholder for a number, like using x or y in algebra. In this problem, we're told that =7 \circ = 7 , so everywhere you see the circle, replace it with 7!

Do I need to memorize what circle symbols equal?

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No! The problem will always tell you what each symbol represents. Just look for statements like "=7 \circ = 7 " at the beginning of the question.

What if I see other symbols like triangles or squares?

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The same rule applies! Whether it's \triangle , \square , or any other shape, just substitute the symbol with whatever number the problem says it equals.

Can symbols equal negative numbers or fractions?

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Absolutely! Symbols can represent any real number - positive, negative, fractions, or decimals. The substitution process works exactly the same way.

How do I double-check my substitution work?

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After substituting, read your new expression out loud. Instead of "69 minus circle," you should have "69 minus 7." If you still see any symbols, you missed a substitution step!

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