Kỳ Thi Olympic Toán Học Quốc Tế

Michael’s class has 5 boys and 6 girls. How many classmates does he have?

• 11

• 10

• 12

• 9

If today is Wednesday and also the first day of March. Which day of the week is 9th March?

• Wednesday (Thứ Tư)

• Saturday (Thứ Bảy)

• Friday (Thứ Sáu)

• Thursday (Thứ Năm)

• …

• 
• 

Dan celebrated his 6th birthday 3 years ago. How old will he be 2 years later?

• 1

• 11

• 7

• 5

According to the pattern below, what is the value of the next number?

• 13

• 15

• 25

• 30

Find the value of 5 + 6 + 7 + 8 + 9 + 10.

• 50

• 55

• 40

• 45

Calculate 13 – 11 + 9 – 7 + 5 – 3 + 1.

• 14

• 6

• 7

• 10

Gordon thinks of a number. He adds 38 then subtracts 42 to get the smallest 2-digit odd number. Find Gordon’s number.

• 15

• 25

• 14

• 7

Let X and Y be different 1-digit numbers. If the equation below is correct, find the value of Y.

Let X and Y be different 1-digit numbers. If the equation below is correct, find the value of Y.

• 4

• 8

• 9

• 7