Determine the numerical value of the triangle:
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Determine the numerical value of the triangle:
To solve the equation , we will follow these steps:
Therefore, the numerical value of the triangle is .
Accordingly, the correct answer choice is , which matches choice 4.
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
Since 33 is being added to the triangle, you need to do the opposite operation (subtraction) to cancel it out. Think of it as undoing what's already there!
The triangle is just a placeholder for an unknown number, like using 'x' in algebra. It represents the missing value we need to find.
Yes! You can count: 33 + ? = 40. Count up from 33 to 40: 34, 35, 36, 37, 38, 39, 40. That's 7 steps, so △ = 7.
Replace the triangle with 7 in the original equation: . Since 40 = 40 is true, your answer is correct!
Double-check your arithmetic! The most common error is using the wrong operation. Remember: to isolate △, you must subtract 33 from both sides.
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