Skip to content / Đến nội dung
ThichHocToan.com

TIMO 2021 Grade 3 Preliminary Set 5

Question 1

According to the pattern shown below, what is the number in the blank? 1, 7, 13, 19, 25, 31, __

Question illustration
  1. 35
  2. 36
  3. 37
  4. 38

Question 2

Tomorrow will be Friday. Which day of the week will 20 days later be?

Question illustration
  1. Tuesday
  2. Wednesday
  3. Thursday
  4. Friday

Question 3

The age of Sammy 5 years ago is equal to the age of Joseph 9 years ago. How old is Sammy when Joseph is 23 years old?

Question illustration
  1. 19
  2. 27
  3. 37
  4. 9

Question 4

A tree is planted every 12m in a street from one end. There are 10 trees on the street on one side. How long in m is the street?

Question illustration
  1. 108
  2. 120
  3. 96
  4. 132

Question 5

According to the pattern shown below, how many ⊗ more than → is / are there in the 115th group?

Question illustration
  1. 5
  2. 4
  3. 2
  4. 1

Question 6

Find the value of $13+15+17+19+45+21+23+25+27$.

Question illustration
  1. 180
  2. 185
  3. 200
  4. 205

Question 7

Find the value of 29×$33+67$×29.

Question illustration
  1. 2842
  2. 2871
  3. 2900
  4. 2929

Question 8

Find the value of 2×5×4×25÷1000.

Question illustration
  1. 5
  2. 1
  3. 10
  4. 25

Question 9

Find the value of 240÷$8+320$÷$4+400$÷10.

Question illustration
  1. 150
  2. 225
  3. 250
  4. 300

Question 10

Find the value of $2+4+6+8$+...+$24+26+28$.

Question illustration
  1. 210
  2. 420
  3. 200
  4. 400

Question 11

Define operation symbol a⊕b=a+b+2×a, find the value of (3⊕2)⊕4.

Question illustration
  1. 9
  2. 37
  3. 24
  4. 21

Question 12

Amy and John have 100 peanuts in total. John has 22 peanuts more than Amy. How many peanuts does Amy have?

Question illustration
  1. 61
  2. 78
  3. 22
  4. 39

Question 13

The numbers below follow the arithmetic sequence, what is the value of the 100th term? 13, 19, 25, 31, 37, ...

Question illustration
  1. 613
  2. 595
  3. 601
  4. 607

Question 14

The sum of 5 consecutive numbers is 50. Find the value of the smallest number among all the numbers.

Question illustration
  1. 7
  2. 8
  3. 9
  4. 10

Question 15

Amy and John have 150 peanuts in total. John has 2 times as Amy’s. How many peanuts does John have?

Question illustration
  1. 50
  2. 75
  3. 100
  4. 125

Question 16

How many squares are there in the figure below?

Question illustration
  1. 11
  2. 12
  3. 13
  4. 14

Question 17

The side length of a square is 5. Find the perimeter of this square.

Question illustration
  1. 20
  2. 25
  3. 15
  4. 30

Question 18

At least how many squares can be seen if observing this figure from the side?

Question illustration
  1. 6
  2. 7
  3. 8
  4. 9

Question 19

How many triangles are there in the figure below?

Question illustration
  1. 6
  2. 7
  3. 8
  4. 9

Question 20

At most how many lines can be formed by using 6 points on a plane?

Question illustration
  1. 10
  2. 11
  3. 12
  4. 15