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DIVIDING BY 8 & 9

Grade3

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Hello, How are you doing?Today we are going to begin new lesson on

Division.

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Related Multiplication FactRelated Multiplication Fact - Related

multiplication fact could be used to find the quotient

Example – 27 ÷ 9 = 316 ÷ 8 = 2

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Related Division fact Related Division Fact- Related Division fact

can also be used to find the quotient or missing number.

Example 24 ÷ 3 = nn = 3

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Divide48 ÷ 8

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Find the value of n.8 x n = 24Solution:Related multiplication fact can be used to

find the missing number.8 times 3 is equal to 24Thus, n = 3

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Skip – counting (Dividing by 8 and 9)Use skip-counting on the number line to find

the quotient.

Example : 40 ÷ 8

0 8 16 24 32 40

Thus, 40 ÷ 8 = 5

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Use an ArrayProblem can be modeled using counters.Example –

16 ÷ 8 = 2

Number in array number of rows number in each row

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There are 80 cans in all. If there are 8 groups of Cans, how many cans are there in each group?

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Divide( 17 – 8) ÷ 9

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Using the fact 56 ÷ 8 = 7, write the three related facts.

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The table below shows the number of students taking part in various games. How many students are taking part in Soccer? Each represents 9 students.

a) 28b) 25c) 45d) 53

Game Number of students

Rugby

Soccer

Football

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ASSESSMENT

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1. Dividea) 72 ÷ 8 =b) 72 ÷ 9 =

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2. Find the value of a.( 12 + 15) ÷ 9 = a

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3. Alice travels 64 miles along a river in 8 days. She travels the same number of miles each day. How many miles did she travel each day?

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4. Rachel paid $45 for 9 burgers. How much did each burger cost?

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5. How many female volunteer for the Anti- pollution squad? Each represents 8 people.a) 56b) 48c) 56d) 75 Volunteer Number of persons

Male

Female

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6. Which of the following numbers are not divided by 9?

36

45

19

72

77

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7. A group of 8 children go to the picnic. They share 32 candies equally. How many candies did each child gets?

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8. There are 36 chairs with 9 chairs in each row in a Game Show. How many rows of chairs are there?

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9. George has 12 cents in his piggy bank and another 24 cents in his pocket. He divided all the cents among himself and 8 of his friend. How many cents did each person gets?

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10. Morgan spend $90 in 9 days on food. How much money he would have spend everyday?

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Recap• Multiplication Fact• Division Fact• Skip- counting• Use an Array• Solved Examples• Practice Problems

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Well Done!Now Practice worksheets on the Lesson.