Whole-number division with typically up to four-digit dividends and two-digit divisors is understood through place value: the dividend is decomposed into groups, and each quotient digit represents how many groups of the divisor fit at that place. The quotient and remainder satisfy , with the remainder less than the divisor; estimation checks the quotient’s size and the remainder is interpreted as a quantity, not appended as another digit. The scope is whole-number quotients and remainders, excluding decimal division and more general rational divisors.
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To divide by a two-digit divisor, use place value and divide one part of the dividend at a time.
Example: Find .
First, estimate:
So the answer should be close to .
does not fit into or , so use .
Ask: How many groups of fit into ?
So write in the tens place of the quotient.
Subtract:
Bring down the to make .
Ask: How many groups of fit into ?
Write another in the ones place of the quotient.
Subtract:
There are no more digits to bring down, so is the remainder.
Check the answer:
The remainder is less than the divisor , so the answer is correct.
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