TIMO Mock 2021 2022 P2 [PDF]

奧 冠 教 育 中 心 OLYMPIAD CHAMPION EDUCATION CENTRE Room 309-310 & 703, 8 Jordan Road, Yau Ma Tei, Kowloon, Hong Kong SAR, CH

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奧 冠 教 育 中 心 OLYMPIAD CHAMPION EDUCATION CENTRE Room 309-310 & 703, 8 Jordan Road, Yau Ma Tei, Kowloon, Hong Kong SAR, CHINA Tel (852) 3153 2028

Fax (852) 3153 2074

Website: www.olympiadchampion.com

Email: [email protected]

泰國國際數學競賽模擬試 2021 - 2022

THAILAND INTERNATIONAL MATHEMATICAL OLYMPIAD MOCK EXAM 2021 - 2022

小學二年級 Primary 2 時限:90 分鐘 Time allowed:

90

minutes

模擬試題 Mock Paper 考生須知: Instructions to Contestants:

1.

本卷包括 試題 乙份,試題紙不可取走。 Each contestant should have ONE Question-Answer Book which CANNOT be taken away.

2.

本卷共 5 個範疇,每範疇有 6 題,共 30 題,每題 5 分,總分 150 分,答錯不扣分。 There are 5 exam areas and 6 questions in each exam area. There are a total of 30 questions in this Question-Answer Book. Each carries 5 marks. Total score is 150 marks. No points are deducted for incorrect answers.

3.

請將答案寫在 答題紙 上。 All answers should be written on ANSWER SHEET.

4.

比賽期間,不得使用計算工具。 NO calculators can be used during the contest.

5.

本卷中所有圖形不一定依比例繪成。 All figures in the paper are not necessarily drawn to scale.

6.

比賽完畢時,本試題會被收回。 This Question-Answer Book will be collected at the end of the contest. 本試題不可取走。 THIS Question-Answer Book CANNOT BE TAKEN AWAY. 未得監考官同意,切勿翻閱試題,否則參賽者將有可能被取消資格。 DO NOT turn over this Question-Answer Book without approval of the examiner. Otherwise, contestant may be DISQUALIFIED. 請以最簡形式填寫答案,若計算結果是分數,請確保為真分數或帶分數,或將計算結果寫成小數。錯誤單位將不給予任何分數。 Write down the answer in the simplest form. If the calculation result is a fraction, please write down the answer as a proper or mixed fraction, decimal figure is also accepted. Marks will NOT be given for incorrect unit.

請將答案寫在 答題紙 上。 All answers should be written on the ANSWER SHEET. 填空題(第 1 至 30 題)(每題 5 分,答錯及空題不扣分) Open-Ended Questions (1st ~30th) (5 points for correct answer, no penalty point for wrong answer) Logical Thinking 邏輯思維 1.

When Hailey was born, mum was 26 years old. When Hailey will be 25 years old, how old will mum be? 在海莉出生時,媽媽當時 26 歲。當海莉 25 歲時,請問媽媽多少歲? 在海莉出生时,妈妈当时 26 岁。当海莉 25 岁时,请问妈妈多少岁?

2.

According to the pattern shown below, what is the English alphabet in the space provided? 按以下規律,求在橫線上的英文字母。 按以下规律,求在横线上的英文字母。 H 、 K 、 N 、 Q 、 __ 、 W 、 ….

3.

Given Ella’s father has 6 children, how many brother(s) and sister(s) does Ella have? 已知艾拉的父親有 6 個孩子,問艾拉有多少個兄弟姊妹? 已知艾拉的父亲有 6 个孩子,问艾拉有多少个兄弟姐妹?

4.

According to the pattern shown below, how many square(s) is / are there within the 34th symbol counting from the left? 按以下規律,由左數起第 34 個符號中,請問有多少個正方形? 按以下规律,由左数起第 34 个符号中,请问有多少个正方形?

▓▲★▓▲★▓▲★▓▲★▓▲★ … 5.

According to the pattern shown below, how many Ä is / are there in the 7th group? 按以下規律,問第 7 組有多少個 Ä? 按以下规律,问第 7 组有多少个 Ä? Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä 1st Group 2nd Group 3rd Group 第1組 第2組 第3組 第1组 第2组 第3组 Question 5 第5題

6.

2nd April 2022 is Saturday. What day of the week is 3rd June that year? 2022 年 4 月 2 日是星期六,當年 6 月 3 日是星期幾? 2022 年 4 月 2 日是星期六,当年 6 月 3 日是星期几? 請以最簡形式填寫答案,若計算結果是分數,請確保為真分數或帶分數,或將計算結果寫成小數。錯誤單位將不給予任何分數。 Write down the answer in the simplest form. If the calculation result is a fraction, please write down the answer as a proper or mixed fraction, decimal figure is also accepted. Marks will NOT be given for incorrect unit.

請將答案寫在 答題紙 上。 All answers should be written on the ANSWER SHEET. Arithmetic 算術 7.

Find the value of 11´12 + 11´ 2 - 11´ 3 . 求 11´12 + 11´ 2 - 11´ 3 的值。 求 11´12 + 11´ 2 - 11´ 3 的值。

8.

Find the value of 4 - 5 + 9 - 8 + 12 - 19 + 23 - 22 + 26 . 求 4 - 5 + 9 - 8 + 12 - 19 + 23 - 22 + 26 的值。 求 4 - 5 + 9 - 8 + 12 - 19 + 23 - 22 + 26 的值。

9.

Find the value of 8 + 13 + 17 + 6 + 12 + 4 . 求 8 + 13 + 17 + 6 + 12 + 4 的值。 求 8 + 13 + 17 + 6 + 12 + 4 的值。

10. If A and B are both 1-digit numbers, what is the value of B - A if the equation with carrying is correct? 若 A 和 B 均為一位數字,且以下有進位的算式正確,求 B - A 的值。 若 A 和 B 均为一位数字,且以下有进位的算式正确,求 B - A 的值。

A +

A

B

5

2

Question 10 第 10 題 11. If A and B are different 1-digit numbers, what is the value of B if the equation is correct? 若 A 和 B 為不同的 1 位數字,且以下算式正確,求 B 的值。 若 A 和 B 为不同的 1 位数字,且以下算式正确,求 B 的值。

A

B

-

A

=

4

4

12. Find the value of 12 ÷ 4 + 16 ÷ 4 + 20 ÷ 4 - 48 ÷ 6 . 求 12 ÷ 4 + 16 ÷ 4 + 20 ÷ 4 - 48 ÷ 6 的值。 求 12 ÷ 4 + 16 ÷ 4 + 20 ÷ 4 - 48 ÷ 6 的值。

請以最簡形式填寫答案,若計算結果是分數,請確保為真分數或帶分數,或將計算結果寫成小數。錯誤單位將不給予任何分數。 Write down the answer in the simplest form. If the calculation result is a fraction, please write down the answer as a proper or mixed fraction, decimal figure is also accepted. Marks will NOT be given for incorrect unit.

請將答案寫在 答題紙 上。 All answers should be written on the ANSWER SHEET. Number Theory 數論 13. 10 students have odd number of scores of mathematics test in total. 3 students have odd number of scores and 4 students has even number of scores. At most how many student(s) have even numbers of scores among the remaining students? 10 名學生的數學考試成績總和為奇(單)數,其中 3 名學生得到奇(單)數分數,4 名學生得到 偶(雙)數分數。在餘下的學生中,最多有多少名學生得偶(雙)數分數? 10 名学生的数学考试成绩总和为奇(单)数,其中 3 名学生得到奇(单)数分数,4 名学生得到 偶(双)数分数。在余下的学生中,最多有多少名学生得偶(双)数分数? 14. Fill the lines with ‘ + ’ and ‘ – ’ to make the equation below correct. (Write down the complete equation on the answer sheet) 在橫線上填上加號或減號,使下列算式正確。(在答題紙上寫上完整算式) 在横线上填上加号或减号,使下列算式正确。(在答题纸上写上完整算式)

9

6

2

12 = 5

15. What is the largest 2-digit number that can be divisible by 3 and 5? 求最大的兩位數能同時被 3 及 5 整除。 求最大的两位数能同时被 3 及 5 整除。 16. The numbers below follow the arithmetic sequence, what is the 15th number? 根據以下的等差數列,問第 15 個數是甚麼? 根据以下的等差数列,问第 15 个数是什么? 31、34、37、40、43、… 17. How many 2-digit number(s) that is / are multiples of 4 is / are there? 有多少個兩位數是 4 的倍數? 有多少个两位数是 4 的倍数? 18. Fill the lines with ‘ + ’ and ‘ ´ ’ to make the equation below correct. (Write down the complete equation in the answer sheet) 在橫線上填上加號或乘號,使下列算式正確。(在答題紙上寫上完整算式) 在横线上填上加号或乘号,使下列算式正确。(在答题纸上写上完整算式)

1

2

3

3

4

= 15

請以最簡形式填寫答案,若計算結果是分數,請確保為真分數或帶分數,或將計算結果寫成小數。錯誤單位將不給予任何分數。 Write down the answer in the simplest form. If the calculation result is a fraction, please write down the answer as a proper or mixed fraction, decimal figure is also accepted. Marks will NOT be given for incorrect unit.

請將答案寫在 答題紙 上。 All answers should be written on the ANSWER SHEET. Geometry 幾何 19. One unit square is one square face of a small cube. At least how many unit square(s) can be seen if viewing the figure below from the top? 一個單位正方形是一個小正方體的一個正方形面。如果從上面俯視下圖的立體,最少可以看見多 少個單位正方形? 一个单位正方形是一个小正方体的一个正方形面。如果从上面俯视下图的立体,最少可以看见多 少个单位正方形?

Question 19 第 19 題 20. A pyramid has 36 edges, how many face(s) does this pyramid have? 有一個錐體有 36 條棱,問這個錐體有多少個面? 有一个锥体有 36 条棱,问这个锥体有多少个面? 21. How many square(s) is / are there in the figure below? 請問下圖有多少個正方形? 请问下图有多少个正方形?

Question 21 第 21 題

請以最簡形式填寫答案,若計算結果是分數,請確保為真分數或帶分數,或將計算結果寫成小數。錯誤單位將不給予任何分數。 Write down the answer in the simplest form. If the calculation result is a fraction, please write down the answer as a proper or mixed fraction, decimal figure is also accepted. Marks will NOT be given for incorrect unit.

請將答案寫在 答題紙 上。 All answers should be written on the ANSWER SHEET. 22. How many line segment(s) is / are there in the figure below? 下圖有多少條線段? 下图有多少条线段?

Question 22 第 22 題 23. At most how many line(s) can be formed by using 5 points on a plane? 在平面上畫 5 點,最多可連成多少條線? 在平面上画 5 点,最多可连成多少条线? 24. According to the pattern shown below, what is the figure in the space provided? 按以下規律,橫線上的圖案應該是甚麼? 按以下规律,横线上的图案应该是什么? ▓▲●▓●▲▓▲●▓●▲▓▲●▓__▲▓▲● … Question 24 第 24 題 Combinatorics 組合數學 25. What is the smallest 4-digit number by using 0, 3, 5, 6 and 8? (Each number can only be used once) 利用 0、3、5、6 和 8 組合成最小的四位數是多少?(每個數字只能用一次) 利用 0、3、5、6 和 8 组合成最小的四位数是多少?(每个数字只能用一次) 26. Choose 4 digits, without repetition, from 0, 3, 5 and 8 to form two 2-digit numbers. What is the minimum value of the difference? 從 0、3、5、8 中選 4 個不可重複的數位組成 2 個兩位數,求差的最小值。 从 0、3、5、8 中选 4 个不可重复的数位组成 2 个两位数,求差的最小值。

請以最簡形式填寫答案,若計算結果是分數,請確保為真分數或帶分數,或將計算結果寫成小數。錯誤單位將不給予任何分數。 Write down the answer in the simplest form. If the calculation result is a fraction, please write down the answer as a proper or mixed fraction, decimal figure is also accepted. Marks will NOT be given for incorrect unit.

請將答案寫在 答題紙 上。 All answers should be written on the ANSWER SHEET. 27. There are 3 ways from canteen to library. There are 5 ways from the library to swimming pool. There are 3 ways from the swimming pool to cinema. How many different way(s) is / are from the canteen to the cinema through the library and the swimming pool respectively? 從餐廳到圖書館有 3 條路可走,從圖書館乘車到游泳池有 5 條路可走,從游泳池到戲院有 3 條路 可走。那麼,從餐廳到戲院,當中經過圖書館及游泳池,有多少種不同的走法? 从餐厅到图书馆有 3 条路可走,从图书馆乘车到游泳池有 5 条路可走,从游泳池到戏院有 3 条路 可走。那么,从餐厅到戏院,当中经过图书馆及游泳池,有多少种不同的走法? 28. According to the values of the following expressions, how many 2-digit number(s) is / are there? 求下列這些答案中,有多少個兩位數? 求下列这些答案中,有多少个两位数?

4 ´ 3, 17 - 9, 6 + 3, 24 ÷12, 19 - 6, 4 + 6, 35 ÷ 7 29. Donald has 5 $1 coins, 5 $2 coins and 5 $5 coin, how many value(s) of a product can he buy without any changes? 當勞有 5 枚 1 元、5 枚 2 元和 5 枚 5 元硬幣,他可以購買多少種不同面值的貨物而不須找贖? 当劳有 5 枚 1 元、5 枚 2 元和 5 枚 5 元硬币,他可以购买多少种不同面值的货物而不须找赎? 30. Choose 4 digits, without repetition, from 0, 1, 4, 7 and 8 to form two 2-digit numbers and minus them. What is the minimum value of the difference? 從 0、1、4、7、8 中選 4 個不可重複的數位組成 2 個兩位數,然後減起來,求差的最小值。 从 0、1、4、7、8 中选 4 个不可重复的数位组成 2 个两位数,然后减起来,求差的最小值。

~ 全卷完 ~ ~ End of Paper ~

請以最簡形式填寫答案,若計算結果是分數,請確保為真分數或帶分數,或將計算結果寫成小數。錯誤單位將不給予任何分數。 Write down the answer in the simplest form. If the calculation result is a fraction, please write down the answer as a proper or mixed fraction, decimal figure is also accepted. Marks will NOT be given for incorrect unit.