Page 95 - Math Genius C3

E:\Working\Orange_Education\Math_Genius_3\Open_Files\CHAP_05
\ 01-Oct-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

Division of a 3-digit number

Example 2: Divide 633 by 3.

Solution: Step 1: Arrange the numbers as shown here. 3 633 211 Q

Step 2: Divide 6 hundreds by 3. 6
03
3 × 2 = 6, so 6 hundreds ÷ 3 = 2 hundreds 3
03
Write 2 in the hundreds place of the quotient. 3
Subtract 6 – 6 = 0 0 R

Step 3: Bring down the tens. Divide 3 tens by 3.

3 tens ÷ 3 = 1 ten
Write 1 in the tens place of the quotient. Subtract 3 – 3 = 0

Step 4: Bring down the ones.

Divide 3 ones by 3. Checking:
(Quotient × Divisor) + Remainder = Dividend
3 ones ÷ 3 = 1 one 211 × 3 + 0 = 633

Write 1 in the ones place of the 633 + 0 = 633
quotient. Subtract 3 – 3 = 0 Thus, the answer is correct.

Thus, quotient (Q) = 211, Remainder (R) = 0.
Example 3: Divide 805 by 4.

Solution:

4 805 201 Q Since the second digit Checking:
8
005 is 0 and 0 < 4, bring (Quotient × Divisor) + Remainder = Dividend
4 down the next digit of 201 × 4 + 1 = 805
1 R dividend by putting a 804 + 1 = 805
0 in quotient for that
number. 805 = 805
Thus, the answer is correct.
Thus, Q = 201, R = 1

Think Tank Critical Thinking
Find the dividend, if

1. Q = 12, D = 4 and R = 0 2. Q = 320, D = 3 and R = 2

Teacher’s Encourage students to remember the multiplication tables sincerely before learning division.
Tip

Mathematics-3 93