B TàI LiệU Ôn Thi Vòng Lo I Timo 2020 Kindergarten - Primary 1 Đề 1: Thailand Internationnal Mathematical Olympiad Mock Exam 2018 - 2019 [PDF]

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BỘ TÀI LIỆU ÔN THI VÒNG LOẠI TIMO 2020 Kindergarten - Primary 1 ĐỀ 1: ThaiLand Internationnal Mathematical Olympiad Mock exam 2018 – 2019 Open Ended Question 1-30 th(5 points for correct answer, no penalty point for wrong aswer) 1. Amy’s mother has four children. One of them is son. How many sister does Amy have? 2. 5th Aril 2019 is Friday. Which day of the week is 25th Ma this year 3. After 5 years , Amy will be 12 years old. Jenny is 2 years old elder than her. How old is Jenny now? 4. According to the pattern shown below, what is the number in the blank? 2,5,8,11,14,17 ,__... 5. According to the pattern shown below, what is the number in the blank? 2,2,4,6,10,16,__... 6.According to the pattern shown below, how many group?

7. 8. 9. corect 10. correct? 11.

is /are there in the 13th

Find the value of 14 + 37 + 16 + 3 Find value 27 +18 – 7 if A is a 1-digit number, what is the value of a if the equation be low is 3 x A = 15 what is number that should be filled in the blank if the equation below is 62 - … = 54 if B is a 1-Digit number, what is value of B if the equation is correct?

14-B=B 12. Find the value of 1+2 +3 +4 + 5 + 4 + 3 +2 + 1 13. Amy has 16 apples and John has 6 apples. How many apple does Amy have yo give John to make them to have same number of apples? 14. Fill the lines with + ane – to make the equation below correct.(write down the complete equation in the answer sheet) 1_4_5_7=7 15. 4 students have 16 balloons in totaal and each of them has a different number of balloon(s) does the student with the most balloons have? 16. how many 2-digit number that have the unit 0 is/are there? 17. determine the result of 91 + 92+93 +94+95+96+97+98+99+100 18. Find the largest 2-digit even number Geometry 19. How many square is /are there in the figure below?

20. At leat how many cube is/are there in the figure below?

21. How many side is/ are there in the polygon below?

22. According to the pattern shown below, what is the figure in the space provided?

23. How many angles is/are there in te polygon below?

24. How many line segment can be formed in the figure below?

25. Separate 27 candies into three equal groups , how many candy is /are there in each group? 26. Choose 2 digits, whithout repetition, from 2,6,4 and 8 to form two – digit numbers. How many old number is/are there? 27. According to the folowing sequence for first 100th terms, how many even number is/are there? 28. Arranging the following numbers in descending order(from the largest to the smaillest) Find the value of 5th smallest number 29. Peter has 4 $1 coins and 8 $2 coins. How many $5 coins can he exchange? 30 An orange costs $4. An Apple costs $6. How much does it cost if John buys 4 oranges and apples? End of paper

Đề 2: Logical Thinking 1. If tomorrow will be Monday, which day of the week will it be 3 days later?

2. By observing the pattern, what is the number in the space provided? 5, 10, 15, __ 3. By observing the pattern, what is the number in the space provided? 1, 4, 2, 5, 3, __ 4. Tom is 20 years old and Jane is 12 years old. What is the difference between their ages? 5. According to the pattern shown below, how many red square(s) is / are there in the 4 figure? th

Arithmetic 6. Find the value of 4 + 6 + 5 + 5. 7. Find the value of 15 – 5 – 1.

8. If A is a 1 -digit number, what is the value of A if the equation below is correct?

9. Find the value of 4 + 1 + 0 + 4 + 1 + 0 + 4 + 1 + 0. 10. Find the value of A: 3 ×+ 5 × + 4 × = 12 Number Theory 11. chocolates.

Joe has 17 candies. Joe eats 2 and exchanges 5 candies with Tim for 4

Is the sum of Joe’s candies odd or even now? 12. have?

A set of breakfast has 2 eggs. How many eggs do 3 sets of breakfast

13. Fill in the blanks with ‘ + ’ and ‘ - ’ to make the equation below correct. (Write down the signs from left to right). 1

__1__2__2=6

14. Fill in the blanks with ‘ + ‘ and ‘ – ‘ to make the equation below correct. (Write down the signs from left to right) 5

__4__2__1=0

15. Gwen has more marbles than Jane and fewer marbles than Kyle. Jane has only 1 marble and Kyle has 3 marbles. How many marbles does Gwen have ? Geometry 16.

How many square(s) is / are there in the figure below ?

17.

At least how many cube(s) is / are there in the figure below ?

18.

How many side(s) is / are there in the polygon below ?

19.

How many interior angle(s) is / are there in the figure below ?

20.

Observe the pattern to find the missing figure. - - - - - - ? - - - - - -  Combinatorics

21. Separate 10 circles into 2 equal groups, how many circle(s) is / are there in each group? 22. What is the smallest 3-digit number formed by digits 1, 2 and 0? (Each number can only be used once) 23.

Given the following sequence, how many odd number(s) is / are there ? 2,6,25,13,44,51,19,38

24.

Which number below is the largest ? 202013, 201991, 202009, 201945

25. Arranging the following numbers in descending order (from the largest to the smallest), find the value of the 3rd largest number. 28, 1, 19, 5, 24, 13 ĐỀ 3: Logical Thinking 1. John has two sons and one daughter. How many children does he have?

2. Given that the beam is balanced in both cases, which figure is the heaviest among square, triangle and circle?

3. According to the pattern shown below, what is the number in the blank?

4. According to the pattern shown below, what is the number in the blank? 1、1、2、1、1、2、3、2、1、 1、2、3、__、3、….

5. According to the following pattern, how many stars are there in the fourth group?

Arithmetic 6. Find the value of 1 + 1 + 1 + 1 + 1 + 1 + 1. 7. Find the value of 17 − 2 − 8. 8. If A is an 1-digit number, what is the value of A if the equation is correct? 12-A= 8 9. Find the value of 3 + 2 + 1 + 8. 10.

If B is an 1-digit number, what is the value of B if the equation is correct? 6+B=9

Number Theory 11. Hermione has 6 oranges and Harry has 4 oranges. How many orange(s) does Hermione have to give Harry to make them have the same number of oranges? 12. Fill in the blanks with ‘ + ‘ and ‘ – ‘ to make the equation below correct. (Write down the signs from left to right) 1…2 …3 ….4=4 13. Fill in the blanks with ‘ + ‘ and ‘ – ‘ to make the equation below correct. (Write down the signs from left to right) 4…3…5=6

14.

Counting from 0 to 9, how many 1-digit numbers are there?

15. According to the following pattern, find the value of the next term. 10, 9, 8, 7, 6, __ Geometry 16.

How many squares are there in the figure below?

17.

How many cubes are there in the figure below?

18.

How many pentagons (5-sided polygon) are there in the figure below?

19.

How many hexagons (6-sided polygon) are there in the figure of question

18? 20. provided? ○

According to the pattern shown below, what is the figure in the space □△○□△○__△○□△…

Combinatorics 21. 12 candles are divided into two equal groups. How many candles are there in each group? 22.

How many odd numbers are there in the following sequence? 8,9,2,7,6,5,4,1,2,4

23. sequence?

How many even numbers are there in the following 6,3,9,4,2,7,4,5,1,3

24. What is the largest 3-digit number formed by 4, 8 and 6? (Each number can only be used once) 25. Peter has one $1 coin, two $2 coins and one $5 coin, what is the maximum value of souvenir that he can buy?

ĐỀ 4: Logical Thinking 1. Jacob has three children, two of them are sons. How many daughter(s) does Jacob have? 2. In the figure below, there are 2 cases when the beam is balanced. Which one is the lightest among ○、△、□?

3. According to the pattern shown below, what is the number in the box?

4. According to the pattern shown below, what is the number in the blank? 1

、2、3、2、1、2、3、2、1、 2、3、2、__、2、….

5. According to the following pattern, how many  are there in the fourth figure?

Arithmetic 6. Find the value of 2 + 2 + 2 + 2 + 2. 7. Find the value of 15 − 7 − 5. 8. If A is an 1-digit number, what is the value of A if the equation below is correct? 11–A= 2 9. Find the value of 13 + 12 + 15. 10. correct?

If A is an 1-digit number, what is the value of A if the equation below is 26+A= 29 Number Theory

11. Amy has 8 apples and John has no apples. How many apple(s) does Amy have to give John so that they can have the same number of apples? 12. Fill in the blanks with ‘ + ‘ and ‘ – ‘ to make the equation below correct. (Write down the signs from left to right) 1…2…3…4 = 10 13. Fill in the blanks with ‘ + ‘ and ‘ – ‘ to make the equation below correct. (Write down the signs from left to right) 4….7…..9 = 2 14. correct?

If A is an 1-digit number, what is the value of A if the equation below is

2xA=6x3

15.

According to the following pattern, find the value of the next term. 10, 8, 6, 4, __

Geometry 16.

How many circles are there in the figure below?

17.

At least how many cubes are there in the figure below?

18.

How many sides are there in the polygon below?

19.

How many angles are there in the polygon below?

20. provided? ○

According to the pattern shown below, what is the figure in the space △○△○__○△… Combinatorics

21. 6 candies are divided into three equal groups. How many candies are there in each group?

22. How many odd numbers are there among the following numbers? 1, 3, 4, 7, 11, 18, 29, 47, 76 23. How many even numbers are there among the following numbers? 1, 4, 5, 9, 14, 23, 37, 60, 97 24. What is the smallest 3-digit number formed by 1, 2 and 3? (Each number can be used only once). 25. Peter has two $1 coins, two $2 coins and one $5 coin. Given that the price of a souvenir is $3, how many souvenir(s) can he buy if he wants to spend all of his money? ĐỀ 5: Logical Thinking 1. If tomorrow will be Monday, which day of the week will it be 5 days later? 2. By observing the pattern, what is the number in the space provided? 8, 15, 22, _ 3. By observing the pattern, what is the number in the space provided? 1, 4, 2, 6, 3, __ 4. Father is 47 years old and mother is 41 years old. What is the difference between their ages? 5. According to the pattern shown below, how many + is / are there in the 4th figure?

Arithmetic 6.

Find the value of 6 + 4 + 8 + 2 + 3 + 7 .

7.

Find the value of 21 - 6 - 7 .

8.

If A is a 1-digit number, what is the value of A if the equation below is correct? A+7=13

9.

Find the value of 3 + 20 + 3 + 20 - 3 - 20 +2.

10. Solve the puzzle A + AA = 72 to find the value of A. (given that is a 1- digit number and ̅AA is a 2- digit number) Number Theory 11. Peter had 23 candies. Peter ate 4 and exchanged 7 candies with Alice for 4 chocolates. Determine whether the number of candies that Peter has right now is an odd number or an even number. 12.

A set of breakfast has 3 eggs. How many eggs do 4 sets of breakfast have?

13. Fill in the blanks with ‘ + ’ and ‘ – ’ to make the equation below correct. (Write down the signs from left to right) 1__1__2__2=6 14. Fill in the blanks with ‘ + ’ and ‘ – ’ to make the equation below correct. (Write down the signs from left to right) 2__3__5__6 =0 15. Peter has more candies than Alice and fewer candies than Mary. Alice has 5 candies and Mary has 7 candies. How many candies does Peter have?

Geometry 16.

How many square(s) is / are there in the figure below?

17.

How many cube(s) is / are there in the figure below?

18.

How many side(s) is/ are there in the polygon below?

19.

How many interior angle(s) is / are there in the figure below?

20.

By observing the pattern, what is the missing figure?

■、▲、★、■、★、▲、■、▲、？、■、★、▲ Combinatorics 21. each group.

Separate 12 circles into 4 equal groups. Find the number of circle(s) in ○○○○○○○○○○○○

22. What is the largest 3- digit number formed by digits 6, 3 and 7? (Each number can be used only once) 23.

Among the following numbers, how many odd number(s) is / are there? 2, 75, 91, 72, 68, 38, 16, 41

24.

Which number below is the largest? 2019609 、 2019405 、 20180221 、 2019901

25. Arranging the following numbers in descending order (from the largest to the smallest), find the value of 2nd largest number. 42, 17, 23, 50, 5

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