math olympiad 5 reviewer

A number multiplied by 5 and divided by 3 gives 40. What is the number?

• 24

• 8

• 10

• 6

The greatest even number less than 399 is divided by 10.

What is the remainder?

• 9

• 3

• 8

• 99

Write “forty-eight thousandths” as a decimal.

• 0.018

• 0.48

• 0.048

• 0.0048

A tank is 1/ 6 full of gasoline. When 2 liters are added, the tank becomes 1 /4 full. What is the total capacity of the tank?

• 14 liters

• 24 liters

• 24 liters

• 24 liters

How many grams are there in 0.05 kilogram?

• 50

• 60

• 100

• 90

The digits 1, 2, 3, 4, and 5 are each used once to composed a five-digit number abcde, such that the three-digit number abc is divisible by 4, bcd is divisible by 5, and cde is divisible by 3. What is the value of the digit a?

• 1

• 2

• 3

• 4

Cupcakes are sold in packages of 10 and 15. If you need exactly 100 cupcakes for a children’s party, what is the smallest number of both packages than you need to buy?

• 4 packages each

• 5 packages each

• 2 packages each

• 6 packages each

Two squares with perimeter of 36 cm each are placed side by side. What is the perimeter of the resulting figure?

• 50

• 54

• 45

• 30

A number multiplied by 5 and divided by 3 gives 40. What is the number?

• 4

• 5

• 10

• 24

After 5 tests, a pupil’s average was 80. After taking an examination which was counted as two test grades, his average dropped to 76. What was his grade on that examination?

• 75

• 66

• 88

• 90