FRACTION OF NUMBERS GRADE 3

Hello, How are you doing? Today, we are going to start a new lesson on Fraction of Numbers.

Fraction Fraction – A fraction is a number that names part of the whole or group.

Model: To find 1/3 of 9 Step 1: use 9 counters. Step 2: Make 3 equal groups. Step 3: Count the number of counters in one group.

Model 1/3 of 9 = 3 Step 1 Step 2Step 3 3 counters in each group

How would you use counters to show 1/5 of 25? 5 equal groups of 5 counters

Divide to find 1/4 of 16 Solution – 1/4 of 16 1/4 x ÷ 4 = 4 Thus, 1/4 of 16 = 4

How many counters you use to find 1/9 of 18? Answer- 18

To find 2/3 of 21 Step 1: 2/3 x 21 Step 2: Divide 21 by 3 to find how many are in each group. 21 ÷ 3 =7 There are 7 in each group Step 3: Multiply the numerator by 7 to find out how many in 2 groups. 7 x 2 = 14 There are 14 in 2 groups.

Let us practice some more questions!

Find 5/6 of 24 Answer - 20

Use counters to solve 1/2 of 6 1/2 of 6 = 3

There are 15 coins in a box. If 2/3 of the coins are nickels, how many nickels are there? Answer - 10

Rock reads book for 1/3 of an hour. For how many minutes does rock read a book? Answer – 20 minutes

ASSESSMENT

1.Tony bake 35 cookies. He puts chocolate chips on 2/7 of them. How many cookies have chocolate chips? Answer - 10

2.Which is greater? a) 3/5 of 25 b) 2/7 of 21 c) 2/3 of 18 d) All are same

3.Find fraction of a number. 1/8 of 32 Answer - 4

4.Mr. Bob buys 1/3 of bags of munchies mix. Of 27 items how many munchies mix bags does he buy? Answer - 9

5.Mr. Baker brought 15 items for the bake sale. Of those items 3/5 were different type of cookies. Are there 8 items of cookies? Answer - no

6.In the Greg’s family, 1/3 of 24 children are boys. How many children are boys? Answer - 8

7.Rachel has 12 muffins. He gave 1/6 of them to his sister. How many muffins are left with him? Answer - 10

8.Wales made 14 sandwiches. He put cheese topping on 1/2 of them. How many sandwiches have cheese topping? Answer - 7

9.Find 5/8 of 24. Answer - 15

10.There are 36 children in the class. If 5/6 of them have completed their homework, how many children have completed their homework? Answer - 30

Recap  Fraction  Model to find parts of a group  Dividing to find parts of group  Solved Examples  Assessment

Well Done! Now Practice Worksheets on the Lesson.