Skip to content / Đến nội dung
ThichHocToan.com

TIMO 2026 Grade 5 Preliminary SET 1 - Self-study

Question 1

4 years ago, the father was 4 times as old as his son. In 12 years from today, the father will be twice as old as his son. How old is the father now?
  1. 32
  2. 36
  3. 40
  4. 44

Question 2

Trees are planted along a straight road of length 240 meters at equal intervals of 8 meters. If trees are planted at both ends of the road, how many trees are planted in total?
  1. 30
  2. 31
  3. 32
  4. 62

Question 3

Find the next number in the pattern:

$3,7,15,31,63,\ldots$
  1. 95
  2. 125
  3. 127
  4. 128

Question 4

If October 1st of a year is a Tuesday, what day of the week is December 25th of the same year?
  1. Wednesday
  2. Thursday
  3. Friday
  4. Sunday

Question 5

A test has 25 questions. Each correct answer gains 4 points, while each wrong or unanswered question loses 2 points. If a student gets 70 points in total, how many questions did he answer correctly?
  1. 18
  2. 19
  3. 20
  4. 21

Question 6

Calculate the value of $1\times2+2\times3+3\times4+\cdots+19\times20$.
  1. 2660
  2. 1920
  3. 2021
  4. 2627

Question 7

Find the value of: $2+5+8+11+\cdots+59$
  1. 580
  2. 610
  3. 640
  4. 670

Question 8

A number is multiplied by 3, then 3 is added, then divided by 0.5, and finally 14 is subtracted to get 40. Find the original number.
  1. 6
  2. 7
  3. 8
  4. 9

Question 9

In the addition sum $\overline{A4B}+\overline{2C6}=811$, find the value of $A+B+C$.
  1. 15
  2. 16
  3. 17
  4. 18

Question 10

When a positive integer $N$ is divided by 7, the remainder is 5. What is the remainder when $(3N+4)$ is divided by 7?
  1. 2
  2. 3
  3. 4
  4. 5

Question 11

Find the sum of all positive factors of 36.
  1. 80
  2. 85
  3. 91
  4. 96

Question 12

Find the digit $X$ such that the 5-digit number $\overline{3X524}$ is divisible by 9.
  1. 2
  2. 4
  3. 6
  4. 8

Question 13

If $a\otimes b=a\times b-a-b$, find the value of $(6\otimes4)\otimes3$.
  1. 23
  2. 25
  3. 27
  4. 29

Question 14

Find the units digit of $3^{2026}$.

($3^{2026}=3\times3\times\cdots\times3\times3$, the product of 2026 factors equal to 3.)
  1. 1
  2. 3
  3. 7
  4. 9

Question 15

How many 3-digit numbers are divisible by both 4 and 6?
  1. 74
  2. 75
  3. 76
  4. 80

Question 16

How many triangles are there in the given figure?

Question illustration
  1. 20
  2. 25
  3. 30
  4. 35

Question 17

As shown in the figure, a square of side 8 cm contains four identical quarter circles drawn from its vertices. Find the area of the shaded region in the center (Take $\pi=3.14$).

Question illustration
  1. 13.76 cm²
  2. 15.24 cm²
  3. 18.24 cm²
  4. 24.16 cm²

Question 18

In triangle ABC, D is a point on BC such that $BD=2DC$. If the area of triangle ABC is 45 cm², find the area of triangle ABD.

Question illustration
  1. 15 cm²
  2. 20 cm²
  3. 30 cm²
  4. 40 cm²

Question 19

A large cube with edge length 5 cm is painted red on all faces and then cut into small unit cubes of edge length 1 cm. How many unit cubes have exactly 2 faces painted red?

Question illustration
  1. 24
  2. 36
  3. 48
  4. 54

Question 20

A rectangle has a length of 18 cm and a width of 12 cm. If its length is decreased by 3 cm and its width is increased by 3 cm, how does its area change?
  1. Increases by 9 cm²
  2. Decreases by 9 cm²
  3. Increases by 15 cm²
  4. Unchanged