### Math Olympiad K1_23 on Day:.........Month:..........Year:...........

Total Core =

Question 1: According to the pattern below, what is the number in the blank ?

1, 6, 3, 8, 5, 10,.....
Question 2: According to the pattern below, what is the number in the blank ?

1, 2, 3, 4, 5, 6,.....
Question 3: According to the pattern below, what is the number in the blank ?

1, 8, 3, 10, 5, 12,.....
Question 4: According to the pattern below, what is the number in the blank ?

2, 5, 4, 7, 6, 9, 8,......
Question 5: According to the pattern below, what is the number in the blank ?

3, 4, 5, 6, 7, 8,.....
Question 6: According to the pattern below, what is the number in the blank ?

5, 6, 7, 8, 9,.....
Question 7: If Y is a 1-digit number, that is the value of Y in the equation below is correct ?

17 - Y = 8
Question 8: If Y is a 1-digit number, that is the value of Y in the equation below is correct ?

19 - Y = 10
Question 9: If Y is a 1-digit number, that is the value of Y in the equation below is correct ?

20 - Y = 15
Question 10: If Y is a 1-digit number, that is the value of Y in the equation below is correct ?

30 - Y = 13