VTMO 2026 - Grade 3 - Semifinal - SET 9 - Self-study

Question 1

A pet shop has 30 white and grey animals altogether. Of the 20 white animals, 7 are rabbits. Among the grey animals, 8 are not rabbits. How many rabbits are in the shop?

1. 7
2. 9
3. 10
4. 12
5. 15

Question 2

The picture shows a square park. A total of 48 trees are planted at equal intervals around its boundary, with a tree at every corner. How many trees are on each side of the park?

1. 11
2. 12
3. 13
4. 14
5. 15

Question 3

The digit sum of 123 is $1+2+3=6$. How many three-digit numbers have a digit sum of 6?

1. 12
2. 16
3. 18
4. 20
5. 21

Question 4

What does the block look like when viewed from the back?

Question 5

How many minutes does a clock’s minute hand take to move from 2 to 11?

1. 20 minutes
2. 25 minutes
3. 30 minutes
4. 35 minutes
5. 45 minutes

Question 6

The chart shows Grade 3 students’ favourite travel destinations. Each student chose exactly one destination. There are 24 more students choosing Đà Nẵng than Hải Phòng. How many students took part in the survey?

1. 112
2. 168
3. 116
4. 120
5. 336

Question 7

The operation is defined by $x\otimes y=x×y+x$. For example, $4\otimes5=4×5+4=24$. Find $3\otimes7$.

1. 21
2. 24
3. 28
4. 32
5. 30

Question 8

Tí thinks of three different natural numbers. All three are even, greater than 10 and less than 20. What is the smallest possible sum of the three numbers?

1. 36
2. 42
3. 48
4. 30
5. 44

Question 9

Find the dividend when the divisor is the largest one-digit number and the quotient is 2.

1. 9
2. 14
3. 16
4. 18
5. 20

Question 10

Minh thinks of a number. He multiplies it by 6, adds 4, then adds the original number to obtain 74. What number did Minh think of?

1. 6
2. 7
3. 24
4. 10
5. 14

Question 11

How many three-digit numbers less than 319 have only odd digits? Examples include 135 and 151.

1. 30
2. 35
3. 33
4. 34
5. 29

Question 12

Anh, Bình and Châu start with equal numbers of candies. In each round, Anh takes 3 more candies, Bình takes 4 more and Châu takes 9 more. After 7 rounds, Châu has as many candies as Anh and Bình combined. How many candies did Anh have at first?

1. 7
2. 10
3. 14
4. 16
5. 20

Question 13

An glues small cubes onto a cylindrical box as shown. He paints the top faces of the cubes, then presses those painted faces onto a sheet of paper. Which picture shows the print?

Question 14

An has 2 more books than Bình. Bình has 3 fewer books than Châu. Dũng has 4 more books than Châu. Which statement is NOT correct?

1. Châu has 3 more books than Bình.
2. Châu has 1 more book than An.
3. Dũng has 7 more books than Bình.
4. An has 1 more book than Châu.
5. An has 5 fewer books than Dũng.

Question 15

Each small square has area $1\text{ cm}^2$. Find the area of the shaded region.

1. $20\text{ cm}^2$
2. $18\text{ cm}^2$
3. $22\text{ cm}^2$
4. $24\text{ cm}^2$
5. $36\text{ cm}^2$

Question 16

Anh arranges five wooden sticks numbered 1 to 5 as shown. By moving exactly two of sticks 1, 3 and 5, which of the following shapes CANNOT be made?

Question 17

How many cubes are in the figure, including those hidden from view?

1. 7
2. 8
3. 9
4. 10
5. 12

Question 18

What number should replace each flower so that the equality is true? $\ast×\ast=2×2×3×3$.

1. 2
2. 3
3. 4
4. 9
5. 6

Question 19

In the $3×3$ table below, every row, every column and both diagonals have the same sum. What is the value of A?

1. 22
2. 31
3. 72
4. 56
5. None of these

Question 20

The matchstick pictures follow the pattern shown below. How many matchsticks are needed for Picture 4?