VTMO 2026 - Grade 4 - Semifinal - SET 5 - Self-study

Question 1

What is the area of the shaded figure below?

1. $20\text{ cm}^2$
2. $25\text{ cm}^2$
3. $35\text{ cm}^2$
4. $40\text{ cm}^2$
5. $50\text{ cm}^2$

Question 2

Find the mirror image of the figure below. The five candidate figures are labelled A to E.

1. Figure A
2. Figure B
3. Figure C
4. Figure D
5. Figure E

Question 3

Linh is 5 years older than Minh. How old is Minh when Linh is 35 years old?

1. 20
2. 25
3. 30
4. 35
5. 40

Question 4

The sum of the digits of a four-digit number is 3. What is the product of its digits?

1. 0
2. 1
3. 3
4. 4
5. $1\times2\times3\times4$

Question 5

The teacher tells the class: “Think of a number, add 1, then double the result. Give this result to the person beside you. That person subtracts 1, then doubles the result to get the final answer.” An thinks of 6 and gives his result to Bình. What final answer does Bình obtain?

1. 18
2. 24
3. 26
4. 27
5. 38

Question 6

Hải thinks of two different natural numbers with both properties:
• Each is a two-digit number with identical digits.
• Neither is divisible by 2, 3 or 5.
What is their sum?

1. 33
2. 44
3. 55
4. 66
5. 88

Question 7

A rectangular wall pattern uses grey tiles and striped tiles. Some tiles have fallen off, as shown. How many grey tiles have fallen off?

1. 5
2. 6
3. 7
4. 8
5. 9

Question 8

Pi has some sheets of paper. Each time, Pi selects one sheet and cuts it into 4 smaller sheets. After doing this 7 times, Pi has 30 sheets in all. How many sheets did Pi have at first?

1. 3
2. 5
3. 7
4. 9
5. 11

Question 9

A 36-page book is numbered from page 1. How many digits are used to write all its page numbers?

1. 36
2. 72
3. 43
4. 63
5. 11

Question 10

Toby writes the numbers from 1 to 100 on the board. Which digit appears least often?

1. 6
2. 4
3. 3
4. 1
5. 0

Question 11

Lan has blue, red and yellow marbles.
• If she buys twice as many blue marbles as she currently has, blue marbles will be $2/5$ of the new total.
• If instead she buys three times as many red marbles as she currently has, red marbles will be $3/5$ of the new total.
She originally has 275 marbles. How many are yellow?

1. 210
2. 175
3. 120
4. 75
5. 150

Question 12

How many elephants are needed to balance the third scale below?

1. 1
2. 2
3. 3
4. 4
5. 5

Question 13

In July of a certain year, exactly three Fridays have even-numbered dates. What day of the week is 5 September of that year?

1. Sunday
2. Monday
3. Tuesday
4. Wednesday
5. Thursday

Question 14

In December, a shop sold 168 cars in four colours:
• Black cars: five times the number of red cars.
• White cars: three times the number of red cars.
• Grey cars: 18 more than the number of red cars.
How many grey cars were sold?

1. 15
2. 30
3. 48
4. 43
5. 33

Question 15

A cube has six faces, each carrying one of the six symbols shown. The five drawings are views of the same cube, except for one incorrect view. Find that view.

1. View A
2. View B
3. View C
4. View D
5. View E

Question 16

Find the sum of the digits of $101\times101\times101$.

1. 3
2. 4
3. 5
4. 6
5. 8

Question 17

Which calculation below has an even result?

1. $23+24+25+26+27$
2. $20\times7+24\times1+23$
3. $1+3+5+7+\cdots+21$
4. $2024\times7+2025\times3$
5. $1+2+3+4+\cdots+20$

Question 18

How many even two-digit numbers are greater than 19?

1. 39
2. 40
3. 41
4. 42
5. 43

Question 19

Find the puzzle pieces that complete the picture reading “VTMO 2022”. All eight pieces A to H are shown below.

1. ADEH
2. CFBG
3. ADBG
4. AFBH
5. CDEG

Question 20

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