VTMO 2026 - Grade 4 - Semifinal - SET 8 - Self-study

At the beginning and end of his lunch break, Hải sees the classroom clock in a mirror, as shown. How long is his lunch break?

Hoàng lives with his father, mother, younger sister, a dog, a cat, two parrots and four fish. How many legs do they have altogether?

Tiến, Sơn and Đức start with the same amount of money. Tiến buys 3 pencils and 4 notebooks and has 7 dollars left. Sơn buys 3 pencils and 3 notebooks and has 28 dollars left. Đức buys 1 pencil and 4 notebooks and has 21 dollars left. How many dollars more does one notebook cost than one pencil?

A square park has 48 equally spaced trees around its boundary, including one tree at every corner. How many trees are on each side?

The drawings show different views of the same die. Which letter is on the face opposite H?

A teacher numbers the boys 1,2,3,… and separately numbers the girls 1,2,3,… . They stand equally spaced around a circle in this order: boy 1, girl 1, boy 2, girl 2, and so on. There are more boys, so the remaining boys stand consecutively at the end. Exactly 5 boys stand consecutively, and boy 3 is opposite girl 10. Opposite students have equally many students between them in either direction. How many girls are there?

Thanh joins six squares of side 2 cm into the figure shown. What is its perimeter, in centimetres?

The square shown is divided into 9 identical small squares. Each small square has side 4 cm. Find the perimeter of the original square.

Today is Sunday, 26 November 2017. Phương’s birthday is 1 January. Her brother Khang’s birthday is 6 days before hers. On what weekday is Khang’s birthday this year?

An, Bình and Chi have a total age of 30 years now. What will their total age be in 2 years?

What fraction of the whole figure is shaded?

A square has side equal to the width of a rectangle. The rectangle has perimeter 100 cm and length 40 cm. Find the perimeter of the square.

An joins six wooden pieces into the square shown: two equal large triangles, two equal medium triangles, one small triangle and one square. Find the difference between the sum of the perimeters of all six pieces and the perimeter of the assembled square. The marked side of a large triangle is 10 cm.

Find the area of the shaded region if each small square has area 2 square centimetres.

The figure is formed from two squares whose side lengths are natural numbers of centimetres. Their total area is 52 square centimetres. What is the perimeter of the combined figure?

UVW and XYZ are three-digit numbers, and U,V,W,X,Y,Z are six different digits. What is the greatest possible value of $UVW-XYZ$?

Hạnh has completed some tests and has one final test left. If she scores 76 on the final test, her average will be 82; if she scores 97, her average will be 85. How many tests has she already completed?

Practice clarification: do not count the final test that she has not yet taken.

Class 4A has 28 students. Some are absent when their teacher surveys their favourite sports, football and basketball. Every student surveyed likes at least one of the two sports. Ten like basketball, 20 like football, and 4 like both. How many students are absent?

The teacher has four gifts, one teddy bear, one bunch of flowers, one robot and one book, to give to Thảo, Nhi, Đức and Hải, one gift each. Hải does not like flowers; Đức does not like books; Nhi does not like robots; Thảo does not like teddy bears. In how many ways can the teacher distribute the gifts so that nobody receives a disliked gift?

A car’s odometer reads 42924, a palindrome: it reads the same from left to right as from right to left. What is the least additional number of kilometres the car must travel for the odometer to show the next palindrome?