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VTMO 2026 - Grade 3 - Semifinal - SET 1 - Self-study

Question 1

A father is 36 years old and his child is 6 years old. After how many years will the father be three times as old as the child?

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  1. 30
  2. 15
  3. 6
  4. 9
  5. 12

Question 2

Different shapes represent different digits. What digit does the square represent?

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

Question 3

Find $N$: $7\times6\times5\times9=30\times N$.

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  1. 42
  2. 30
  3. 45
  4. 63
  5. 54

Question 4

How many triangles are there in the figure?

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  1. 6
  2. 7
  3. 8
  4. 9
  5. 10

Question 5

The operation is defined by $a\circledast b=a\times b+a+b$. For example, $8\circledast5=8\times5+8+5=53$. Find $9\circledast3$.

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  1. 36
  2. 39
  3. 42
  4. 45
  5. 48

Question 6

Pi wants to colour the letters in TITAN EDUCATION. Different letters must have different colours, and repeated copies of the same letter must have the same colour. How many different colours does Pi need?

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  1. 7
  2. 8
  3. 9
  4. 10
  5. 11

Question 7

An and Bình travel from A to E. An takes $A\to B\to C\to D\to E$; Bình takes $A\to B\to F\to G\to E$. Given $BF=450$ m and $CD=200$ m, how many metres farther does Bình travel than An?

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  1. 200 m
  2. 250 m
  3. 450 m
  4. 500 m
  5. 650 m

Question 8

Minh is standing in a line with his classmates for a trip. He is 6th from the front and 10th from the back. How many students are in the line altogether?

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  1. 17
  2. 19
  3. 15
  4. 16
  5. 14

Question 9

Việt and Nam have 50 trading cards altogether. After exchanging cards, Việt has 4 more cards than Nam. How many cards does Việt have now?

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  1. 23
  2. 25
  3. 27
  4. 29
  5. 30

Question 10

Which figure can be folded along its dashed lines to make the pyramid shown?

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Question 11

An has 10 more sweets than Bình. An gives Bình 3 sweets. How many more sweets does An have than Bình now?

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

Question 12

What is the last digit of $(1991+1992+\cdots+2022)-(1+2+\cdots+22)+45$?

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

Question 13

In the subtraction shown, A and B are digits. Find $A+B$.

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  1. 10
  2. 6
  3. 4
  4. 9
  5. 14

Question 14

At a birthday party, Thanh joins small tables into one long table as shown. If Thanh invites 20 friends, how many small tables must he join into a long table?

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  1. 10
  2. 9
  3. 11
  4. 8
  5. 5

Question 15

Minh has five stacks of identical books, as shown. He wants all five stacks to have the same height, without changing the number of stacks. In one move he may transfer either one or two books. What is the smallest number of moves needed?

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

Question 16

Tom writes $11,22,33,44,55,66,77,88$ on the board. Jerry rounds each number to the nearest ten. Donald adds Jerry’s rounded numbers. What total does Donald get?

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  1. 410
  2. 380
  3. 390
  4. 396
  5. 400

Question 17

Which option is the mirror image of the figure shown?

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Question 18

An’s clock started running slowly 3 hours ago. It loses 7 minutes every hour. It now shows 2:45. What is the correct time?

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  1. 2:24
  2. 2:38
  3. 2:53
  4. 2:59
  5. 3:06

Question 19

A four-digit number uses each of the digits 0, 1, 6 and 8 exactly once, in an unknown order. Deleting one digit produces a number that is 5410 less than the original. What is the original number?

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Question 20

The product of 13 natural numbers is 13. What is their sum?

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