Task 7

Multiply the following fractions. Change the answer to the lowest term if needed.

1. 8/12 × 1/5=
2. 3/9 × 1/11=
3. 2/7 × 7/9 =
4. 8/10 × 4/7=
5. 4/5 × 3/8=

Correct answer:

a =  2/15
b =  1/33
c =  2/9
d =  16/35
e =  3/10

Step-by-step explanation:

$a=\frac{8}{12}\cdot \frac{1}{5}=\frac{8\cdot 1}{12\cdot 5}=\frac{8}{60}=\frac{2}{15}=0.1333$

$b=\frac{3}{9}\cdot \frac{1}{11}=\frac{3\cdot 1}{9\cdot 11}=\frac{3}{99}=\frac{1}{33}=0.0303$

$c=\frac{2}{7}\cdot \frac{7}{9}=\frac{2\cdot 7}{7\cdot 9}=\frac{14}{63}=\frac{2}{9}=0.2222$

$d=\frac{8}{10}\cdot \frac{4}{7}=\frac{8\cdot 4}{10\cdot 7}=\frac{32}{70}=\frac{16}{35}=0.4571$

$e=\frac{4}{5}\cdot \frac{3}{8}=\frac{4\cdot 3}{5\cdot 8}=\frac{12}{40}=\frac{3}{10}=0.3$

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