# Prepare for AMO 2019 – Grade 3 – Đề luyện thi toán tiếng anh AMO 2019 – Khối 3

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Xin giới thiệu với các bạn đề luyện thi toán tiếng anh AMO 2019 – Khối 3

Prepare for AMO 2019 – Grade 3

## Week 1

**Exercise 1.** Find the missing number.

**Exercise 2.** Find the missing term in the following sequence:

4, 5, 8, 13, (), ()…

**Exercise 3.** Look for a pattern in this row of squares. Shade in the last three squares to finish the pattern.

**Exercise 4.** Emma ordered three pizzas which costs $9 each and she gave a $4 tip to the delivery person. How much change did she get back if she give the delivery person 2 twenty-dollar bills?

**Exercise 5.** It was Halloween yesterday. Emma and Ashley went to 48 houses. If 12 of the houses did not answer the door and 9 of the houses did not have the lights on, how many houses did they visit?

**Exercise 6.** Tom and Michael talked about Bob who has a huge collection of car robots. If Tom and Michael have 9 car robots and Bob has 9 times more than that, how many car robots does Bob have?

**Exercise 7.** The sum of five consecutive numbers is 30. What are the five numbers?

**Exercise 8.** What is the sum of the first 40 numbers in the series below

1, 2, 3, 4, 5, 2, 3, 4, 5, 6, 3, 4, 5, 6, 7, 4, 5, 6, 7, 8…

**Exercise 9.** A teacher bought five flags of different countries, to use in a class activity. She added them to the flags she already had in the classroom. She borrowed four more flags, but two of these weren’t used. In the end ten flags were used in the activity. How many flags were there in the classroom already?

## Week 2

**Exercise 1.** The road in front of my school is planted with 35 trees. The trees are 10 m away from each other. How far is the thirty-fifth tree away from the first one?

**Exercise 2.** A road is 60m long. If trees are planted on both its sides at intervals of 5m. How many trees are planted on the both sides of the road if both ends of the road are also planted with trees?

**Exercise 3.** In a straight row, 12 trees are planted at equal distance. The distance between 1^{st} and 12^{th} tree is 33 meters. What is the distance between 3^{rd} and 9^{th} tree?

**Exercise 4.** How many triangles are there in the figure below?

**Exercise 5.** How many squares do you see?

**Exercise 6.** How many squares and triangles are there in the figure below?

**Exercise 7.** The sum of a father and son’s ages is 45 years. Five years ago, the father was six times as old as his son. Find their present ages.

**Exercise 8.** 9 years from now Kate will be 57 years old. In 13 years, the sum of the ages of Kate and Jenny will be 126. How old is Jenny right now?

**Exercise 9**. Robert’s grandfather is 78 years old. Robert’s father is 50 years old. Robert is 20 years old. How old will Robert be when the sum of their ages be 160?

## Week 3

**Exercise 1.** Jenny takes a short nap after school. As she falls asleep the clock reads 3:03 p.m. She wakes up at 4:25 p.m. How many minutes does Jenny take a nap?

**Exercise 2.** Read the clues to find the secret number.

It is not In the triangle. It is greater than 5.

What number is it?

**Exercise 3.** Linda used 1m 40cm of red ribbon and 4m 38cm of blue ribbon to make a flower. How much ribbon did she use In all, in centimeters?

**Exercise 4.** Jack has a lot of homework to do. He starts his reading homework at 3:40 and ends at 4:30. Then he does math from 4:30 until 5:00. Lastly, he studies for a science test from 5:00 – 5:30. How many minutes did Jack spend on his homework and studying?

**Exercise 5.** Suppose you are visiting an island with knights, who always tell the truth, and knaves, who always lie.

You ask an islander a question. Which question has a guaranteed answer of “no”?

- “Are you a knave?”
- “Are you a knight?”
- “Does 1 + 1 = 3?”
- “Does 1 + 1 = 2?”

In your answer sheet, write 001 for A, 002 for B, 003 for C and 004 for D.

**Exercise 6.** John has a 24 centimeters long piece of wood. He wants to cut it into 3 equal lengths. How long should each piece be In millimeters?

**Exercise 7.** On Saturday, I spent 75 minutes on my science project and 40 minutes on my English homework. On Sunday morning, I spent a total of 100 minutes on my homework. What is the difference between the amount of homework I dịd on Saturday and Sunday morning, In seconds?

**Exercise 8.** Sylvia has 5 balls of yarn. Each ball has 1 m 65 cm of yarn. She uses three balls of yarn for a craft project. How many centimetres of yarn has she left?

**Exercise 9.** A lion and a unicorn in a forest of forgetfulness are strange beings:

The lion lies on Monday, Tuesday and Wednesday and tells the truth on the other days.

The unicorn lies on Thursdays, Fridays and Saturdays and tells the truth on the other days.

One day, they talked to each other.

Lion: ”Yesterday I was lyrng. ”

Unicorn: “So was l.”

On which day did they say that?

In your answer sheet, write 001 for Sunday, 002 for Monday, 003 for Tuesday, 004 for Wednesday, 005 for Thursday, 006 for Friday, 007 for Saturday.

## Week 4

**Exercise 1.** A box of miÌlk costs $2.90 and a package of bacon costs $3.10. How many cents does it cost to buy 2 boxes of milk and 1 package of bacon?

**Exercise 2.** Jenny bought a jacket for $73.50, a shirt for $26.50 and 4 pens costing $9 each. How many dollars did she spend?

**Exercise 3.** If Sue has $30.3 to spend on presents and she buys a teddy bear for $2.40, a dress for $7.6, and a gift card for $15.3. How many pennies does she have left over?

**Exercise 4.** Marian baked bread, cookies and pastries one Saturday at home for her family and friends this holiday season. She made 47 gingerbread cookies which she will distribute equally in tiny glass jars. If each jar contained exactly six cookies, how many cookies would not be placed in a jar?

**Exercise 5.** 45 sweets are given to Albert, Ben, Charles and Dennis in this manner:

Albert | Ben | Charles | Dennis |

4 | 3 | 2 | 1 |

8 | 7 | 6 | 5 |

… | … | … | … |

Who will get the last sweet?

In your answer sheet, write 001 for Albert, 002 for Ben, 003 for Charles and 004 for Dennis.

**Exercise 6.** How many three-digit counting numbers whose digits are 9, 2, and 1 are there?

**Exercise 7.** The Johnson family is planning a summer vacation. They are trying to decide whether to travel by plane, train or car. They will go to Florida, California or Mexico. They can stay In a hotel or with friends. What are all the different trips that the Smiths could plan?

**Exercise 8.** What is the sum of the first 33 numbers In the sequence below?

2, 0, 1, 9, 2, 0, 1, 9, 2, 0, 1, 9 ,…

**Exercise 9.** A string of numbers is arranged In the following pattern:

2, 4, 6, 3, 5, 7, 2, 4, 6, 3, 5, 7,…

What is the digit of the 28^{th} number?

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