1. Which ratio below is the same as 2 : 3?

2. Find the missing number in the blank.
___ : 24 = 8 : 6

3. There are 12 boys, 20 girls and 8 adults in a party. What is the ratio of the number of boys to the number of girls to the number of adults?
Express the answer in the simplest form.

4. Mary spent $50 of her weekly allowance of $200.
What percentage of her weekly allowance did she spend?

5. Tim had a total of 120 green and blue marbles in the ratio of 5 : 3. How many more green marbles than blue marbles are there?

6. The mass of object A is 2.8 kg. The mass of object B is 4 kg 30g. Find their total mass. Express the answer in kilograms.

7. The figure shows a rectangular glass box partly stacked with unit cubes. How many unit cubes are there in the glass box?

8. A tank, 50 cm by 20 cm by 30 cm, is filled with 10.2 litres water at first. A pail of water is poured into this tank and the tank is half-filled with water. How much water is in the pail?

9. The solid below is made up of 10 identical cubes.

On the square grid below, which of the following drawings shows the top view of the solid?

10. Peter and John wanted to divide a number by 10.
Peter multiplied the number by 20 instead and submitted 64 as the answer.
John had used correct method. Find the answer John had submitted.