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To solve the problem of finding , we can follow these steps:
Putting the results together, the difference is .
Therefore, the correct answer to the subtraction is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
You need to borrow from the next column! For example, if you had 62-38, you'd borrow 1 ten from the tens place to make 12-8=4 in the ones place.
Yes! Always start subtracting from the ones place (rightmost column) and work your way left to the tens, hundreds, etc.
Use addition to check! Add your answer to the number you subtracted: . If you get the original number, you're right!
Subtracting left to right doesn't account for borrowing properly! The standard algorithm works right to left because borrowing affects the column to the left.
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