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 given equation is . We are tasked with finding the value of .
Step 2: To find , rearrange the equation to solve for :
.
Step 3: Subtract the known value from the total to isolate :
.
Hence, the 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?
Since 78 is being added to △, you need to do the opposite operation (subtraction) to cancel it out. Think of it like undoing what's already there!
The process is exactly the same! Whether it's or , you still subtract 78 from both sides.
Use the opposite operation: if something is being added (+), subtract it (-). If something is being subtracted (-), add it (+). It's like doing the reverse!
Yes! You can also think: "What number plus 78 equals 80?" Count up from 78 to 80, and you get 2. Both methods should give the same answer.
Negative answers are completely normal! For example, if you had , then . Always check by substituting back.
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