2019 澳洲 AMC A-MiddlePrimary 真题 答案 详解

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中英双语真题

1-10 Questions 1 to 10, 3 marks each
1. 请问这些蛋匣里有多少颗蛋？
How many eggs are in these cartons?
(A) 12 (B) 15 (C) 16 (D) 18 (E) 21

1. 请问以下哪一个选项内的数最大？
   Which one of the following is the largest number?
   (A) 401 (B) 410 (C) 14 (D) 140 (E) 44

2. 请问以下哪一个选项内的长度等于 3 m？
   Which of the following is equal to 3 m?
   (A) 3 cm (B) 30 cm (C) 300 cm (D) 3000 cm (E) 36 cm

3. 一个果盘内有 8 颗桃子，在每位小孩各取走一颗后，果盘内还剩下一颗桃子。请问有多少位小孩？
   A bowl has 8 peaches. After the children take one each, there is one peach left. How many children are there?
   (A) 5 (B) 6 (C) 7 (D) 8 (E) 9

英文真题

Middle Primary Division
Questions 1 to 10, 3 marks each

1. How many eggs are in these cartons?
   (A) 12 (B) 15 (C) 16 (D) 18 (E) 21

2. Which one of the following is the largest number?
   (A) 401 (B) 410 (C) 14 (D) 140 (E) 44

3. Which of the following is equal to 3 m?
   (A) 3 cm (B) 30 cm (C) 300 cm (D) 3000 cm (E) 36 cm

4. A bowl has 8 peaches. After the children take one each, there is one peach left. How many children are there?
   (A) 5 (B) 6 (C) 7 (D) 8 (E) 9

5. A Runnyball team has 5 players. This graph shows the number of goals each player scored in a tournament. Who scored the second-highest number of goals?
   (A) Ali (B) Beth (C) Caz (D) Dan (E) Evan

2019 AMC – Middle Primary

真题文字详解(英文)

2019 AMC Middle Primary Solutions 1. There are 12 + 6 = 18, hence (D). 2. In order the numbers are 14, 44, 140, 401, 410, hence (B). 3. One metre is 100 centimetres, so 3 m = 300 cm, hence (C). 4. Seven peaches were removed from the bowl, one to each child, so there were 7 children, hence (C). 5. (Also UP2) From the top, Caz scored 8, then Evan scored 7, hence (E). 6. Counting on: 1089, 1090, 1091, ..., hence (A). 7. (Also UP4) A♥ is under 4♥, 4♥ is under 5♥, 5♥ is under 3♥, and 3♥ is under 2♥. So the order of dropping is A♥ > 4♥ > 5♥ > 3♥ > 2♥, hence (B). 8. In the row 'Boys' and the column 'Dog' is Finn, hence (C). 9. (Also UP5) From 1st Street to 4th Street, she walks 3 blocks east. From 1st Avenue to 3rd Avenue, she walks 2 blocks north, hence (D). 10. (Also UP6) In Jake's hand, there are (A) 3 hearts, (B) no diamonds, (C) 2 spades, (D) 2 picture cards, and (E) 1 even-numbered card. All 7 cards are equally likely, so (A) is the most likely, hence (A). 11. In the left-hand circle 1 + 3 + 5 + [ ] = 13. So 4 goes in the empty box on the left. In the right-hand circle 1 + 3 + 7 + [ ] = 13. So 2 goes in the empty box on the right. In the top circle 1 + 2 + 4 + [ ] = 13. So 6 goes in the box [ ]. Hence (E). www.amt.edu.au | 37