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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”. 3 21 7,392 There are three 21’s in 73 because 21 - PowerPoint PPT Presentation
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DIVIDING MULTI-DIGIT WHOLE NUMBERSAIM: DIVIDING MULTI-DIGIT WHOLE NUMBERS
MONDAY, SEPTEMBER 29, 2014
STEPS FOR DIVIDING WHOLE NUMBERS:EXAMPLE—What is the value of the quotient 7,392 ÷ 21?
Step 1: Does 21 “go into 7”? No. So, try to find how many 21’s we can get out of “73”.
3
21 7,392 There are three 21’s in 73 because 21
x 3
63
STEPS FOR DIVIDING WHOLE NUMBERS:
EXAMPLE—What is the value of the quotient 7,392 ÷ 21?
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
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.
3 5 109 divided by 21 gives us 5 and some
21 7,3 9 2 remainder which we omit for now.
- 63_____
109
STEPS FOR DIVIDING WHOLE NUMBERS:
EXAMPLE—What is the value of the quotient 7,392 ÷ 21?
Step 6: Multiply 5 by 21 and write the result below the 109.
3 5
21 7,3 9 2
- 63_____
109
105
STEPS FOR DIVIDING WHOLE NUMBERS:
EXAMPLE—What is the value of the quotient 7,392 ÷ 21?
Step 7: Subtract 105 from 109 and write the result below.
3 5
21 7,3 9 2
- 63_____
109
-105
4
STEPS FOR DIVIDING WHOLE NUMBERS:
EXAMPLE—What is the value of the quotient 7,392 ÷ 21?
Step 8: Carry down the 2
3 5
21 7,3 9 2
- 63_____
109
-105
42 We carried down the “2” and now we have 42.
STEPS FOR DIVIDING WHOLE NUMBERS:
EXAMPLE—What is the value of the quotient 7,392 ÷ 21?
Step 9: Divide 42 by 21. We get 2.
3 5 2 42 ÷ 21 = 2
21 7,3 9 2
- 63_____
109
-105
42
STEPS FOR DIVIDING WHOLE NUMBERS:
EXAMPLE—What is the value of the quotient 7,392 ÷ 21?
Step 9: Divide 42 by 21. We get 2.
3 5 2 42 ÷ 21 = 2
21 7,3 9 2
- 63_____
109
-105
42
STEPS FOR DIVIDING WHOLE NUMBERS:
EXAMPLE—What is the value of the quotient 7,392 ÷ 21?
Step 10: Multiply 21 by 2. We get 42. Finally subtract this 42 from the 42 below.
3 5 2
21 7,3 9 2
- 63_____
109
-105
42
- 42
0
