Tính:
13 giờ  - 4 giờ = ………giờ.

Nếu Hùng sang nhà bà ngoại từ 9 giờ thì 10 giờ sẽ đến nơi. Hỏi Hùng đi sang nhà bà ngoại trong bao lâu?

Chủ nhật cả gia đình Hà về quê nội chơi, cả nhà xuất phát lúc 8 giờ và đến nơi lúc 12 giờ. Hỏi quãng đường về quê nội, gia đình Hà đi trong bao lâu?

Mai sang chơi nhà Hà lúc 9 giờ sáng và về nhà lúc 11 giờ. Hỏi Mai đã ở nhà Hà mấy giờ?

Tính:
5 giờ + 7 giờ =……giờ       

Hoa đến trường học lúc 8 giờ sáng và tan học lúc 4 giờ chiều. Hỏi Hoa đi học trong khoảng thời gian là mấy giờ?

Tính:
15 giờ - 9 giờ = …… giờ

Đồng hồ hiện đang chỉ 6 giờ, hỏi đến 10 giờ thì kim giờ phải quay thêm bao nhiêu giờ nữa ?

Tính:
23 giờ - 16 giờ =…….giờ    

Mỗi sáng An thức dậy lúc 6 giờ, An vệ sinh cá nhân và ăn sáng, đi đến trường hết 1 giờ. Hỏi An đến trường lúc mấy giờ?

Tính:
13 giờ + 7 giờ  = …….giờ.

Lan chơi nhà ở bà ngoại từ 9 giờ sáng đến 2 giờ chiều thì mẹ Lan qua đón. Hỏi Lan được chơi  ở nhà bà ngoại trong bao lâu?

Tính:
22 giờ - 7 giờ = …….giờ

A box contains blue marbles. Another two boxes contain only white marbles.

Label on Box A: white marbles

Label on Box B: blue marbles

Label on Box C: Box B contains blue marbles

Which box contains blue marbles if two of the above labels are mixed up ?

Andrew, Lolene and Tommy each draw 3 cards from 9 cards numbered 1,2,3,…,9

Andrew: The product of all my numbers is 48

Jolene: The sum of all my numbers is 16

Tommy: The product of all my numbers is 63

What is the largest number among Jolene’s cards ?

Three girls are talking about their ages.

Ashley: I am 12 years old, 3 years Stella’s junior but 1 year older than Melanie

Stella: I am not the youngest. Melanie and I are 4 years apart. Ashley is 11 years old.

Melanie: I am younger than Ashley. She is 10 years old. Stella is 2 years her senior.

One of the above three statements made by each girl is incorrect.

Help them to unscramble this age puzzle.

Among Andy, Kevin and Matthew, one of them is a teacher. The other two are a doctor and a policeman

Matthew is older than the policeman

Andy and the doctor are not of the same age

The doctor is younger than Kevin

Who is the teacher ?

Teddy: Both Leon and Peter lied

Leon: One of them ( Teddy and Peter ) was lying

Peter: One of them ( Teddy and Peter ) told the truth

Who lied ?

One of the three ladies, Amanda, Beatrice and Lodie, comes from Town A. The other two ladies come from Town B and Town C.

Jodie is older than the lady from Town B

Amanda and the lady from Town C are not of the same age.

The lady from Town C is younger than Beatrice.

Who comes from Town A ?

A meteorological report shows the following records of a certain number of days.

It rained 10 times, either in the morning or in the afternoon.

There were 8 dry afternoons.

There were 14 dry mornings

Each wet afternoon was preceded by a dry morning.

How many days did the meteorologist record ?

A football flew right onto the glass window of the Teachers’ Room and shattered it into pieces. Four probable culprits were called to the Discipline Master’s room for investigation.

Colin: Jason did it !

Jason: David did it !

Melvin: Not by me !

David: Jason did it ! His words cannot be trusted.

Only one student told the truth.

Who was the culprit of this act ?

What is the 5^th number in the 15^th row of the number triangle shown below ?

Alicia, Beatrice, Charles, David, Elaine, Florence, Graham and Herman are four couples.

Elaine had attended David’s wedding as a guest

Alicia’s husband is a cousin of Herman

When Herman went overseas with his spouse, Beatrice, Charles and Elaine each represented their own spouses too see the couple off at the airport.

Help to match the four couples.

Four tourists A, B, C and D book into a 18-storey hotel

The countries of their origin are China, Germany, Mexico and Egypt.

The floor number where A is staying is 4 times that of the Mexican’s

The German stays 4 floors highter than B but lower than the Egyptian.

The Egyptian stays 6 floors lower than A

All the floor numbers of their hotel rooms are even

Match A, B, C, and D to the floor numbers of their hotel rooms.

Melissa, Amy and Tony come from different schools, namely Greenville, Bloomsberry and Windschill Elementary Schools.

Each of them likes one of the following sports: swimming, basketball or volleyball.

Melissa does not go to Greenville

Amy does not go to Bloomsberry

The pupil who likes volleyball does not attend Windschill

The pupil who likes swimming is from Greenville

Match the three pupils to their sports and schools