Page 54 - NUMINO TG_6A
P. 54
Activity 2 Multiplying and Dividing Fractions 03Unit
jOb ective Practice multiplying and dividing fractions.
Activity 2 Multiplying and Dividing of Fractions 1. Textbook Instructions
Now, have students practice the multiplication and division of fractions.
Learn how to multiply a mixed number by a fraction.
Read the example with the students. Tell them to
Multiply. 1 3 4 think about factors that can simply the problem,
4 5
such as replacing 4 with 1 as in the example.
Rewrite the mixed number as an 1 3 4 7 4 4 1
4 5 = 4 5
improper fraction. 1
Multiply the numerators and = 7 4
4 5
denominators. 1
Rewrite the fraction as a mixed number. = 7 = 1 2 1. Have students multiply the fractions. Tell
5 5
them to always write any number greater than
Here, students must think about factors that can simplify the fractions. Have them follow the steps 1 as an improper fraction.
1 above to solve the problems. Example: 1i.
. Multiply. Write your answer in simplest form. 3
7
4 6 5 7 5 The mixed number 1 should be written as
9 7 6 10 6
a. = 8 b. 18 = 15 c. 4 = 3 11 10 .
21 12
7
d. 4 3 = 1 1 e. 4 1 = 2 f. 1 1 2 = 8 2. Have students multiply the three fractions
9 3 7 10 35 3 5 15
given in each problem. Remind them that they
5 1 2 3 3 9 should multiply the numerators with the
12 5 5 4 7 20
g. 3 1 = 4 1 h. = 3 i. 1 2 = 3 1 numerators and the denominators with the
10 10 2
denominotors.
2 . Multiply. Write your answer in simplest form. Example: 2b. 15 1 31
6 10 13
a. 1 1 1 = 1 b. 5 1 3 = 1 513 111
3 5 7 105 6 10 13 52 6 10 13 22 2 2 13
c. 4 3 10 = 3 d. 3 1 1 5 3 = 1 3 1
5 8 2 6 14 8 52
3. Mix the Numbers! 23
2. Build Understanding
When converting the mixed number 3 1 to an improper fraction, students sometimes write the answer as 4 ,
2 2
because they just added 3 1 to get the numerator of 4. Remind the students the proper steps to write
3 1 as an improper fraction
2
Multiply the integer by the denominator. 3 2 6 Check your answer by simplifying the fraction.
Add the product to the numerator. 6 1 7 7 3 1 (correct!)
2 2
6A Unit 03 037
jOb ective Practice multiplying and dividing fractions.
Activity 2 Multiplying and Dividing of Fractions 1. Textbook Instructions
Now, have students practice the multiplication and division of fractions.
Learn how to multiply a mixed number by a fraction.
Read the example with the students. Tell them to
Multiply. 1 3 4 think about factors that can simply the problem,
4 5
such as replacing 4 with 1 as in the example.
Rewrite the mixed number as an 1 3 4 7 4 4 1
4 5 = 4 5
improper fraction. 1
Multiply the numerators and = 7 4
4 5
denominators. 1
Rewrite the fraction as a mixed number. = 7 = 1 2 1. Have students multiply the fractions. Tell
5 5
them to always write any number greater than
Here, students must think about factors that can simplify the fractions. Have them follow the steps 1 as an improper fraction.
1 above to solve the problems. Example: 1i.
. Multiply. Write your answer in simplest form. 3
7
4 6 5 7 5 The mixed number 1 should be written as
9 7 6 10 6
a. = 8 b. 18 = 15 c. 4 = 3 11 10 .
21 12
7
d. 4 3 = 1 1 e. 4 1 = 2 f. 1 1 2 = 8 2. Have students multiply the three fractions
9 3 7 10 35 3 5 15
given in each problem. Remind them that they
5 1 2 3 3 9 should multiply the numerators with the
12 5 5 4 7 20
g. 3 1 = 4 1 h. = 3 i. 1 2 = 3 1 numerators and the denominators with the
10 10 2
denominotors.
2 . Multiply. Write your answer in simplest form. Example: 2b. 15 1 31
6 10 13
a. 1 1 1 = 1 b. 5 1 3 = 1 513 111
3 5 7 105 6 10 13 52 6 10 13 22 2 2 13
c. 4 3 10 = 3 d. 3 1 1 5 3 = 1 3 1
5 8 2 6 14 8 52
3. Mix the Numbers! 23
2. Build Understanding
When converting the mixed number 3 1 to an improper fraction, students sometimes write the answer as 4 ,
2 2
because they just added 3 1 to get the numerator of 4. Remind the students the proper steps to write
3 1 as an improper fraction
2
Multiply the integer by the denominator. 3 2 6 Check your answer by simplifying the fraction.
Add the product to the numerator. 6 1 7 7 3 1 (correct!)
2 2
6A Unit 03 037
