Page 55 - NUMINO TG_6A

Learn how to divide a mixed number by a fraction.

Read the example with students. Review the Divide. 1 4 3
math terms with them. 5 4
What is an improper fraction? A fraction where
the numerator is greater than the denominator. Rewrite the mixed number as an improper 1 4 3 = 9 3
What is a reciprocal? A fraction that is flipped fraction. 5 4 5 4
upside down Write a multiplication sentence using the
What is a mixed number? A whole number that reciprocal. 3 4
is combined with a fraction. Rewrite the fraction as a mixed number. 9 3
= 5

1

= 12 =2 2
5 5

3. Have students divide the fractions. 3 When dividing numbers more than once in a problem, students should divide from left to right.

. Divide. Write your answer in simplest form.

4. Have students divide the three numbers. a. 3 3 = 1 1 b. 9 3 = 15 c. 12 4
4 5 4 5 13 13 = 3

Remind them to divide from left to right.

Example: 4a. d. 10 4 = 5 e. 7 1 3 = 49 f. 2 1 3
13 26 8 7 80 4 8 =6
236
777

Step 1: Solve 2 3 first. g. 3 3 4 1 = 5 h. 1 5 1 2 = 1 1 7 49 = 1 3
7 7 4 2 6 9 5 9 i. 8 80 7

2 72 1 2
3 3
7 31

Step 2: 2 6 2 7 14 7 4 . Divide. Write your answer in simplest form.
3 7 3 6 18 9
a. 2 3 6 7 b. 7 4 1
7 7 7 = 9 10 2 2 5 = 8

c. 5 2 1 5 = 4 d. 2 2 1 3 = 1 1
6 3 8 7 3 5 7 6

24

Make sure students understand that whole numbers should be rewritten as improper fractions.

Example: 3b. 9 3
5

Write 9 as 9 .
1

Write the reciprocal of 3 5 .
5 3

The expression is now 9 5 .
1 3

Multiply the numerators, 9 5 = 45. Multiply the denominators, 1 3 3.

Simplify 45 to 15.
3

038 NUMINO Teacher s Guide