What do you get if you subtract 9 units from 48 units?
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What do you get if you subtract 9 units from 48 units?
To solve this problem, we need to subtract 9 from 48. This involves simple subtraction:
By combining these, the subtraction of 9 units from 48 units gives us:
Therefore, the solution to the problem is , which matches the third choice given.
If we have 85 blocks in total, how many blocks will remain if we remove 4 tens and 1 one?
Because 8 - 9 = -1, which is negative! In subtraction problems, we need positive results in each place value. That's why we regroup (borrow) from the tens place first.
Regrouping means borrowing 1 from the next higher place value. In 48 - 9, we take 1 ten (worth 10 ones) and add it to the 8 ones, giving us 18 ones to work with.
Look at each column from right to left. If the top number is smaller than the bottom number, you need to regroup! For example, since 8 < 9, we must regroup in 48 - 9.
Yes! Addition is the opposite of subtraction. Add your answer to the number you subtracted: . If you get the original number, you're correct!
No problem! Work from right to left, regrouping one column at a time. Each time you borrow, reduce the digit you borrowed from by 1 and add 10 to the current column.
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