Download dividing multi-digit whole numbers

DIVIDING MULTI-DIGIT
WHOLE NUMBERS
AIM: DIVIDING MULTI-DIGIT WHOLE NUMBERS
MONDAY, SEPTEMBER 29, 2014
 Step 1: Does 21 “go into 7”? No. So, try to find how many 21’s we
can get out of “73”.
STEPS FOR DIVIDING WHOLE
NUMBERS:
EXAMPLE—What is the value
of the quotient 7,392 ÷ 21?
3
21 7,392
There are three 21’s in 73 because 21
x3
63
STEPS FOR DIVIDING
WHOLE NUMBERS:
 Step 2: Multiply the number above the “division bar” by the number
at the left of the division bar. Write the result below the inside of the
division bar as shown below.
3
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
21 7,392
63_____
3 x 21 = 63
STEPS FOR DIVIDING
WHOLE NUMBERS:
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
 Step 3: Subtract the result (from step 2) from the part of the quotient
that is under the division bar. Write the result below.
3
21 7,392
- 63_____
10
73 – 63 = 10
STEPS FOR DIVIDING
WHOLE NUMBERS:
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
 Step 4: Carry down the “9”
3
21 7,3 9 2
- 63_____
109
STEPS FOR DIVIDING
WHOLE NUMBERS:
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
 Step 5: Divide the result by 21.
35
21 7,3 9 2
- 63_____
109
109 divided by 21 gives us 5 and some
remainder which we omit for now.
STEPS FOR DIVIDING
WHOLE NUMBERS:
 Step 6: Multiply 5 by 21 and write the result below the 109.
35
21 7,3 9 2
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
- 63_____
109
105
 Step 7: Subtract 105 from 109 and write the result below.
35
21 7,3 9 2
STEPS FOR DIVIDING
WHOLE NUMBERS:
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
- 63_____
109
-105
4
 Step 8: Carry down the 2
35
21 7,3 9 2
STEPS FOR DIVIDING
WHOLE NUMBERS:
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
- 63_____
109
-105
42
We carried down the “2” and now we have 42.
 Step 9: Divide 42 by 21. We get 2.
352
STEPS FOR DIVIDING
WHOLE NUMBERS:
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
21 7,3 9 2
- 63_____
109
-105
42
42 ÷ 21 = 2
 Step 9: Divide 42 by 21. We get 2.
352
STEPS FOR DIVIDING
WHOLE NUMBERS:
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
21 7,3 9 2
- 63_____
109
-105
42
42 ÷ 21 = 2
 Step 10: Multiply 21 by 2. We get 42. Finally subtract this 42 from
the 42 below.
352
21 7,3 9 2
STEPS FOR DIVIDING
WHOLE NUMBERS:
- 63_____
109
-105
EXAMPLE—
What is the value of the
quotient 7,392 ÷ 21?
42
- 42
0