高小組 Senior Primary 4-6 | 邏輯之星2026數學挑戰賽 Logic Star Asia-Pacific Mathematics Championship 2026

Q1: If the four-digit number "12N4" is divisible by 4, how many possible values are there for N? 若四位數" 12N4 "能被 4 整除，則 N 有多少個可能的數值？

A. 3

B. 4

C. 5

Q2: Jack bought 4 apples with $20 and received $3.60 in change. How much would 2 apples have cost him? 傑克用 20 元買了 4 個蘋果，並找回 3.60 元。那麼2個蘋果要多少元？

A. 5

B. 8.2

C. 10

Q3: In the photo all the different letters stand for different digits. Find the sum of A+B+C+D is? 圖中不同的字母代表不同的數字，求 A+B+C+D 的和。

A. 18

B. 19

C. 20

Q4: Which of the following numbers is closest to zero? 下列哪一個數值最接近零？

A. 1+0

B. 0.01+ 0.01

C. 9.1-9

Q5: Jack sees a clock in the mirror, where it looks like this photo.What is the actual time? 傑克在鏡子裡看到一個時鐘如圖所示。請問實際時間是？

A. 5:10

B. 6:50

C. 7:10

Q6: Which of the following is closest to 1000 seconds? 以下哪個選項最接近1000秒？

A. 1 minute 1分鐘

B. 10 minutes 10分鐘

C. 15 minutes 15分鐘

Q7: Two trains leave from the same station at the same time but move in opposite directions.One train moves at 250 km/h and the other moves at 300 km/h. How far apart will the trains be after three hours? 兩列火車同時從同一車站出發，朝相反方向行駛。其中一列火車時速 250 公里，另一列時速 300 公里。三小時後，兩列火車相距多遠？

A. 450km

B. 1350km

C. 1650km

Q8:How many squares are there ? 圖中有多少個正方形？

A. 16

B. 29

C. 30

Q9: 16 students need to cross a river. Only one boat is available which can carry max 4 people each time (include the rower). If students remain on the starting bank after each trip, 1 person must row back. What’s the minimum number of one-way crossings for all students to cross the river? 16 名學生條河，河邊僅有 1 艘小船，船每次最多可搭載 4 人（包含划船者），每次抵達對岸後若出發岸仍有未過河的學生，須有 1 人將船划回出發岸。要讓所有學生都順利抵達河對岸，最少需要多少次渡河？（以單程計算）

A. 4

B. 8

C. 9

Q10: A group of 9 people visited the local science centre.The ticket price for an adult is $10 and the ticket price for a child is $5. The group paid $70 for the tickets. How many children are in this group? 一組 9 人參觀當地科學館，成人門票每張 10 元，兒童門票每張 5 元。這組人總共付了 70 元門票費，請問這組中有多少名兒童？

A. 3

B. 4

C. 5