1) 1/4 of a number is 7, what is the number?  
2) 1/3 of a number is 5, what is the number?  
3) 1/4 of a number is 12, what is the number?  
4) 1/10 of a number is 2.6, what is the number?  
5) 1/4 of a number is 2.5, what is the number?  
6) 2/3 of a number is 12, what is the number?  
7) 2/5 of a number is 10, what is the number?  
8) 2/7 of a number is 6, what is the number?  
9) 4/9  of a number is 12, what is the number?  
10) 3/4 of a number is 27, what is the number?  

1) A bag contains red marbles and blue marbles. 4/5​ of the marbles are blue.
There are 24 blue marbles in the bag.
Work out how many marbles in total are in the bag.
Answer

2) A jar contains green candies and purple candies. 7/10 of the candies are green.
There are 35 green candies in the jar.
Work out how many candies in total are in the jar.
Answer

3)In a basket, 3/8​ of the fruits are apples, and the rest are oranges.

If there are 18 apples in the basket, how many fruits are in total?
Answer

4)Sarah buys a box of chocolates. She eats 3/5 of the chocolates and gives the rest to her friend.
If Sarah eats 18 chocolates, how many chocolates does her friend get?
Answer

5)Mark has a jug of juice. He drinks 1/4 of the juice and uses another 2/5 for cooking. The rest is left in the jug.
If Mark uses 1.6 liters of juice for cooking, how much juice is left in the jug?
Answer