Determine the numerical value of the triangle:
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Determine the numerical value of the triangle:
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: The known numbers in the equation are and . We need to find in .
Step 2: Rearrange the equation to isolate : .
Step 3: Calculate the difference: .
Therefore, the value of the triangle is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
To isolate the triangle, you need to undo what's being done to it. Since 30 is being added to the triangle, you subtract 30 from both sides to cancel it out.
The triangle is just a placeholder for an unknown number - like using x or y. It could be any shape or letter, but it represents the same thing: a mystery value to solve for.
Look at what operation is connecting the unknown to the known number. If it's addition (+), use subtraction (-). If it's subtraction (-), use addition (+).
Yes! You can also think: "What number plus 30 equals 38?" Count up from 30 to 38, and you'll get 8. This confirms your algebraic solution.
Negative answers are perfectly valid! For example, if the equation was , then . Always check by substituting back.
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