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1. lesson 7.9 pg471
Multiply mixed numbers
Grade 5
BY Mr.Ala Ayasrah

2. Remember : Multiply Fractions
Example
2
3
×
5
7
=
2 × 5
3 × 7
=
10
21

4. • How to convert mixed number to fraction (eg: 𝟐
𝟑
𝟓
)
• Step 1: Multiply the whole number by the denominator
2 × 5 = 10
Step 2 : add the numerator 3 to your answer
3 + 10 = 13
Step 3 : write your answer as a numerator with same
denominator to get
𝟏𝟑
𝟓
Convert mixed number to fraction

5. 𝟏
𝟏
𝟐
=
𝟐×𝟏+𝟏
𝟐
=
𝟑
𝟐
Example 1: write the mixed number as fraction

6. Example 2
3
𝟒
𝟓
=
𝟓×𝟑+𝟒
𝟓
=
𝟏𝟗
𝟓

7. Your tern : write each mixed number as fraction
5
𝟏
𝟒
=

8. 4
𝟐
𝟖
=
write each mixed number as fraction

9. 7
𝟑
𝟕
=

10. How to multiply mixed number by fraction and by mixed
numbers 3
1
2
×
3
4
• Step 1 : convert the mixed numbers to fraction
3
1
2
×
3
4
=
7
2
×
3
4
• Step 2: multiply the new fractions
7
2
×
3
4
=
21
8
• Step 3:simplify ( write in simplest form )
21
8
= 2
5
8

11. Example : Multiply
1
𝟐
𝟑
× 3
𝟏
𝟐
=
𝟑×𝟏+𝟐
𝟑
×
𝟐×𝟑+𝟏
𝟐
=
𝟓
𝟑
×
𝟕
𝟐
=
𝟑𝟓
𝟔
= 5
𝟓
𝟔