$$\frac{2}{7}+\frac{1}{2}\times\frac{4}{5}=$$  

Simplify your answer.

(a)  

$$\left(\frac{1}{3}+\frac{1}{6}\right)\div\frac{3}{7}=$$  

Simplify your answer.

(a)  

$$\frac{1}{10}+\frac{3}{5}\times3=$$  

Simplify your answer.

(a)  

$$\frac{1}{4}\div\frac{2}{3}\times\frac{5}{8}=$$  

Simplify your answer.

(a)  

$$1\frac{1}{2}+\frac{2}{3}\div2=$$  

Simplify your answer.

(a)  

$$\frac{3}{5}+\frac{2}{3}-\frac{1}{5}+\frac{1}{3}=$$  

Simplify your answer.

(a)  

Nathan is playing Planet Zak on his computer.

He finished 1/3 of the levels last week and 1/2 of the remaining levels this week.

He had 7 more levels to complete. How many levels does Planet Zak have?

Answer: There are (a)   levels in Planet Zak.

Four boys shared a certain amount of money.

The first received 1/6 of it, the second 1/4, and the third 1/2.

If the fourth boy received $102, how much was the amount of money shared?

Answer: The shared $ (a)   .