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TIMO 2021 Grade 5 Preliminary Set 1

Question 1

Refer to the number pattern below. Find the 5th term in the sequence. 1, 8, 27, 64, __, ...

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  1. 125
  2. 100
  3. 65
  4. 105

Question 2

Tomorrow is Friday. Which day of the week was it 84 days ago?

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  1. Saturday (Thứ Bảy)
  2. Thursday (Thứ Năm)
  3. Tuesday (Thứ Ba)
  4. Friday (Thứ Sáu)

Question 3

It requires 4 minutes to cut a piece of wood into 2 sections. If the time required to cut into each section is the same, how many minutes are required to cut a piece of wood into 3 sections?

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

Question 4

100 students went on a school trip by coaches. At least how many coaches are required to carry all of the students, given that each coach can carry no more than 23 students?

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

Question 5

According to the pattern below, find the most suitable figure for group 5 among 4 answers A, B, C and D.

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

Question 6

Find the value of x, given that 5x+$7=122$.

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  1. 21
  2. 22
  3. 23
  4. 24

Question 7

Find the value of $0+3+6+9$+...+$57+60$.

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  1. 1260
  2. 1800
  3. 1890
  4. 630

Question 8

Calculate 23×$18+39$×$23-7$×23.

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  1. 1150
  2. 1510
  3. 5150
  4. 1105

Question 9

Find the value of $2020-2000+1980-1960$+...+$60-40+20-0$.

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  1. 1000
  2. 1020
  3. 2040
  4. 2000

Question 10

Find the value of 1/(2×3)+1/(3×4)+1/(4×5)+...+1/(98×99)+1/(99×100).

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  1. 49/100
  2. 99/100
  3. 49/50
  4. 1/2

Question 11

If an 8-digit number 1112020A is divisible by 3 and 4, find the value of A.

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

Question 12

Find the unit digit of 6×16×26×...×96×106.

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

Question 13

The sum of A and B is 2020. The value of A is four times the value of B. Find the value of A.

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  1. 505
  2. 1616
  3. 404
  4. 2525

Question 14

Given that X and Y are two 3-digit odd numbers. What is the largest possible difference between X and Y?

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  1. 899
  2. 999
  3. 898
  4. 900

Question 15

How many 3-digit numbers that are divisible by both 3 and 4 are there?

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  1. 80
  2. 75
  3. 150
  4. 70

Question 16

How many right-angled triangles are there in the figure below?

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

Question 17

A big cube is formed by 8 identical cubes with side length 10 cm. Find the side length of the big cube in cm?

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  1. 30 cm
  2. 40 cm
  3. 80 cm
  4. 20 cm

Question 18

Given a rectangle ABCD and a right-angled triangle EDC as the figure below. Find the length of line segment BC given that ED=6 cm, EC=8 cm, DC=10 cm.

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  1. 4.8 cm
  2. 2.4 cm
  3. 4 cm
  4. 5 cm

Question 19

The figure on the right is composed of identical cubes with side length 5 cm. If they paint all top faces of the solid, what is the value of the painted area in cm2?

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  1. 160
  2. 200
  3. 180
  4. 175

Question 20

A square tile has the following pattern. Given that the area of the shaded region is 20 cm2. Find the perimeter of the square tile in cm.

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  1. 40 cm
  2. 60 cm
  3. 80 cm
  4. 20 cm