Solve 24 - Circle: Basic Subtraction with Symbol Substitution

Symbol Substitution with Basic Subtraction

If

=8 \circ=8

Solve the following subtraction problem:

24= 24-\circ=

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

If

=8 \circ=8

Solve the following subtraction problem:

24= 24-\circ=

2

Step-by-step solution

To solve this problem, we will follow these steps:

  • Step 1: Substitute the value of \circ with 8 8 .
  • Step 2: Perform the subtraction.

Now, let's work through each step:

Step 1: The problem tells us that =8 \circ = 8 .

Step 2: Substitute 8 8 into the equation where \circ appears: 248 24 - 8 .

Step 3: Calculate the result of the subtraction:
Start from 24 and count backward by 8 units:

  • Subtracting 4 from 24 gives us 20.
  • Then, subtracting another 4 from 20 results in 16.

Therefore, the solution to the problem is 16 16 .

3

Final Answer

16 16

Key Points to Remember

Essential concepts to master this topic
  • Rule: Replace the symbol with its given numerical value first
  • Technique: Substitute =8 \circ = 8 to get 248=16 24 - 8 = 16
  • Check: Verify by counting backward from 24 by 8 units ✓

Common Mistakes

Avoid these frequent errors
  • Trying to subtract the symbol directly without substitution
    Don't try to calculate 24 - ○ = some number! This ignores the given value and makes the problem unsolvable. Always substitute the symbol's value first, then perform the arithmetic operation.

Practice Quiz

Test your knowledge with interactive questions

If we have 85 blocks in total, how many blocks will remain if we remove 4 tens and 1 one?

FAQ

Everything you need to know about this question

Why can't I just guess what the circle symbol means?

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The problem specifically tells you that =8 \circ = 8 . In math, symbols have exact values - never guess! Always use the given information.

What if I see other symbols like triangles or squares?

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The same rule applies! Look for where the problem tells you the symbol's value. For example, if =5 \triangle = 5 , then substitute 5 wherever you see the triangle.

How do I subtract 8 from 24 if I'm not good at mental math?

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Try breaking it down: Start at 24, subtract 4 to get 20, then subtract another 4 to get 16. Or use counting backwards on a number line!

Can the symbol equal something other than a whole number?

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Yes! Symbols can represent any number - whole numbers, fractions, or decimals. Always check what value the problem gives you for each symbol.

What if I forget to substitute and get a wrong answer?

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This is very common! Always double-check your first step - did you replace every symbol with its number? If you skip substitution, you can't solve the problem correctly.

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