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Division - Division with Remainder

Grade 4ICSE

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

Division is the process of repeated subtraction or splitting a large group into smaller, equal groups. For example, sharing 1212 cookies among 33 friends means each friend gets 44 cookies equally.

The Dividend is the total number to be divided, while the Divisor is the number of groups or the number we are dividing by. In a long division layout, the Dividend is written inside the division bracket, and the Divisor is written to the left outside.

The Quotient is the result or answer obtained from division, and it is usually written on top of the horizontal line of the division bracket. The Remainder is the amount left over when a number cannot be divided exactly into equal parts.

A very important rule is that the Remainder must always be smaller than the Divisor (Remainder<DivisorRemainder < Divisor). If you find a remainder larger than the divisor, it means you can divide the number one more time.

When dividing by 1010, the digit in the ones place of the dividend always becomes the remainder, and the remaining digits form the quotient. For example, in 58÷1058 \div 10, the 55 is the quotient and 88 is the remainder.

When dividing by 100100, the digits in the tens and ones places of the dividend form the remainder, and the rest of the digits form the quotient. For example, in 725÷100725 \div 100, the 77 is the quotient and 2525 is the remainder.

Division of any number by 11 results in the number itself as the quotient with 00 remainder. Dividing 00 by any number (except 00) always gives 00 as the quotient.

📐Formulae

Dividend=(Divisor×Quotient)+Remainder\text{Dividend} = (\text{Divisor} \times \text{Quotient}) + \text{Remainder}

Remainder<Divisor\text{Remainder} < \text{Divisor}

💡Examples

Problem 1:

Divide 4747 by 66 and verify the answer.

Solution:

Step 1: Find how many times 66 goes into 4747. We know 6×7=426 \times 7 = 42 and 6×8=486 \times 8 = 48. Since 4848 is greater than 4747, we take 6×7=426 \times 7 = 42. \nStep 2: Subtract 4242 from 4747. 4742=547 - 42 = 5. \nStep 3: The Quotient is 77 and the Remainder is 55. \nStep 4: Verification: (Divisor×Quotient)+Remainder=(6×7)+5=42+5=47(\text{Divisor} \times \text{Quotient}) + \text{Remainder} = (6 \times 7) + 5 = 42 + 5 = 47. Since this equals the Dividend, the answer is correct.

Explanation:

We use the multiplication table of 66 to find the closest multiple that is less than 4747. The difference between the dividend and this multiple is our remainder.

Problem 2:

Divide 258258 by 55 and find the quotient and remainder.

Solution:

Step 1: Divide the first two digits (2525) by 55. 5×5=255 \times 5 = 25. Subtracting 2525 gives 00. \nStep 2: Bring down the next digit, which is 88. \nStep 3: Divide 88 by 55. 5×1=55 \times 1 = 5. Subtracting 55 from 88 gives 33. \nStep 4: The Quotient is 5151 and the Remainder is 33.

Explanation:

This is a long division problem. We process the dividend from left to right, bringing down digits one by one until all digits are divided.