If:
Solve the following addition problem:
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If:
Solve the following addition problem:
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: According to the problem, the symbol inside the yellow box equals . This means wherever we see this symbol, we can replace it with .
Step 2: We need to solve . Let's perform this calculation:
Therefore, the correct solution to the problem is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
The yellow box is a variable or placeholder that represents a specific number. In this problem, we're told it equals , so we replace it everywhere we see it.
That first statement is crucial information! It tells you what value to use. Without it, you can't solve the problem because you wouldn't know what number the symbol represents.
For accuracy, write out the calculation: . This helps you avoid mental math errors and shows your work clearly.
Then you'd substitute that different number! For example, if the box equaled , then . Always use whatever value is given.
Not quite! In algebra, you solve for the unknown. Here, the unknown value is already given to you, and you just substitute and calculate.
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