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. O L Y M P I A D C H A M P I O N E D U C A T I O N C E N T R E Room 309-310, 8 Jordan Road, Yau Ma Tei, Kowloon, Hong Kong SAR, CHINA Tel (852) 3153 2028 / 9310 1240 Fax (852) 3153 2074 Website: www.olympiadchampion.com Email: olympiadchampion@gmail.com GUANGDONG-HONG KONG-MACAO GREATER BAY AREA MATHEMATICAL OLYMPIAD 2019 (GREATER BAY AREA REGION) Primary 1 Question Paper Time allowed: 75 minutes Instructions to Contestants: 1. Each contestant should have ONE Question Book which CANNOT be taken away. 2. There are 3 sections in this exam. Section A consists of 10 questions. Each carries 4 marks. Section B consists of 10 questions. Each carries 5 marks. Section C consists of 5 questions. Each carries 7 marks. The total number of questions is 25. Total score is 125 marks. No points are deducted for incorrect answers or empty answers. 3. NO calculators can be used during the contest. All figures in the paper are not necessarily drawn to scale. 4. This Question Book will be collected at the end of the contest. THIS Question Book CANNOT BE TAKEN AWAY. DO NOT turn over this Question Book without approval of the examiner. Otherwise, contestant may be DISQUALIFIED. All answers should be written on the ANSWER SHEET. 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. Section A: 1st to 10th Question (Each carries 4 marks) 1) Find the value of 13 36 18 6 27     . 2) According to the pattern, which number should be filled into the box? 1 、 1 、 2 、 4 、 7 、 13 、 、 44 、 … 3) By observing the numbers, find the smallest odd number of any two digits added up. 12、23、6、11、9、22 4) By observing the pattern, what is the English alphabet in the space provided? Z 、 X 、 U 、 Q 、 __ 、F 5) Find the value of 37 6 13 22 16 18      . 6) Refer to the figure below, how many ○ are required to move such that the number of ○ per row is equal? ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ All answers should be written on the ANSWER SHEET. 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. 7) Refer to the figure below, how many squares are there? Question 7 8) By observing the equation, which number should be filled in the box? + 8 + 9 − 11 ＝ 13 9) By observing the pattern from left to right, what is the missing figure? ■、▲、■、★、▲、■、★、★、▲、？ 10) By observing the numbers, which even number is the smallest? 27、3、41、38、19、46 Section B: 11th to 20th Question (Each carries 5 marks) 11) Refer to the figure below, at least how many matches are needed to move to change the fish toward right? All answers should be written on the ANSWER SHEET. 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. Question 11 12) Refer to the figure below, how many ○ are there in the 10th picture? 1 2 3 4 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Question 12 13) Refer to the figure below, at least how many cubes are there? All answers should be written on the ANSWER SHEET. 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. Question 13 14) Refer to the figure below, how many triangles are there? Question 14 15) A slice of pizza can be split into 8 pieces. Now we have 3 slices of pizza and 12 children. How many pieces can each child have? All answers should be written on the ANSWER SHEET. 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. 16) Ming has 100 candies. Ming eats 10 and exchanges 60 candies with mum for 10 chocolates. Then he splits the rest of candies with Yan. How many candies does Ming have now? 17) Refer to the figure below, how many line segments are there? Question 17 18) Refer to the figure below, which figure should be filled in box E?          A B C          D E F 19) Yan has 8 $1 coins, 6 $2 coins and 2 $20 notes. How many $5 coins can she exchange? All answers should be written on the ANSWER SHEET. 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. 20) Refer to the puzzle, find the value of B. A B + A A 1 3 0 Section C: 21st to 25th Question (Each carries 7 marks) 21) By observing the balance, how many boxes B are needed to be placed on the right side to establish the last balance? 22) By observing the pattern, what is the English alphabet in the space provided? Z 、 W 、 R 、 K 、 __ 、…. 23) The sum of 5 consecutive numbers is 20. What is the largest number? 24) Refer to the figure below, how many points can be the starting point to drawing the picture with one stoke? A B B B A C C ？ C All answers should be written on the ANSWER SHEET. 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. Question 24 25) Refer to the figure below, how many ways are there to remove 3 matches to establish the equation? Question 25 ~ End of Paper ~ All answers should be written on the ANSWER SHEET. 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.