After 6 years, Amy will be 13 years old. How old was Amy 4 years ago?

Year: Năm; Year old: Tuổi

(a)  

John wrote a 2-digit number on a piece of paper and asked Peter to guess it.

Peter asked: “Is the number 89?”

John replied: “One of the digits is correct, the position of that digit is also correct.”

Peter asked again: “Is the number 17?”

John replied: “One of the digits is correct, the position of that digit is wrong.”

Peter asked again: “Is the number 75?”

John said: “One of the digits is correct, the position of that digit is correct.”

What is the number written by John?

2-digit number: Số có 2 chữ số; Number: Số; Digit: Chữ số; Correct: Đúng; Wrong: Sai; Position

of that digit: Vị trí của chữ số đó.

(a)  

According to the pattern below, how many circle is / are there in the 10th Group?

Pattern: Quy luật, 10th Group: Nhóm thứ 10

(a)  

Find the value of 1+ 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 .

Value: Giá trị

(a)  

Find the value of 15 x 12 + 15 x 3 - 15 x 5 .

Value: Giá trị

(a)  

Find the value of 2 - 4 + 6 - 8 + 10 - 12 + 14 -16 + 18 .

Value: Giá trị.

(a)  

What is the number that should be filled in the blank?

Number: Số; Blank: Chỗ trống.

123 x            = 861

(a)  

If A and B are both 1-digit numbers, what is the value of B?

1-digit number: Số có 1 chữ số; Value: Giá trị

(a)  

Amy has 118 apples and John has 22 apples. How many apple(s) does Amy have to give John to make them have the same number of apples?

Give: Cho; The same number of: Số lượng bằng nhau

(a)  

4 students have 30 balloons in total and each of them has a different number of balloons. At least how many balloon(s) does the student with the most balloons have?

In total: Tổng số; Different number of: Số lượng khác nhau; At least: Ít nhất; The most balloon:Nhiều bóng bay nhất

(a)  

The numbers below follow the arithmetic sequence, what is the 10th number?

Number: Số; Arithmetic sequence: Dãy số cách đều.

21、33、45、57、69、…

(a)  

How many 3-digit even number(s) that are multiples of 5 is / are there?

3-digit even number: Số chẵn có 3 chữ số; Multiple of 5: Bội của 5

(a)  

What is the largest 2-digit number that can be divisible by 3 and 5?

Largest 2-digit number: Số có 2 chữ số lớn nhất; Divisibleby: Chia hết cho

(a)  

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

Square: Hình vuông; Figure: Hình vẽ

(a)  

A prism has 7 faces, how many vertice(s) does this prism have?

Prism: Hình lăng trụ; Face: Mặt; Vertice: Đỉnh

(a)  

At most how many right angle(s) could a triangle contain?

Atmost: Nhiều nhất; Right angle: Góc vuông; Triangle: Hình tam giác

(a)  

At least how many squares can be seen if viewing the figure below from top?

At least: Ít nhất; Square: Hình vuông; Figure: Hình vẽ; From top: Từ phía trên

(a)  

At most how many triangles are there by drawing 4 straight lines on a plane?

At most: Nhiều nhất; Triangle: Hình tam giác; Straight line: Đường thẳng; Plane: Mặt phẳng

(a)  

Three people Amy, Andy and Johnny have somes apples. After Amy gives 4 apples to Andy and 5 apples to Johnny, they will have the same number of apples. How many apple(s) did Amy have more than Andy originally?

The same number of: Số lượng bằng nhau; Give: Cho; More than: Nhiều hơn; Originally: Ban đầu

(a)  

Choose 2 digits, without repetition, from 2, 3, 4, 5, 6 to form 2-digit numbers. How many even number(s) is / are there?

Digit: Chữ số; Without repetition: Không lặp lại; 2-digit number: Số có 2 chữ số; Even number: Số chẵn

(a)  

There are 2 ways from the market to the train station. There are 5 ways from the train station to the cinema. There are 4 ways from the cinema to the library. How many different way(s) is / are there from the market to the library through the train station and cinema?

Way: Cách; Different: Khác nhau

(a)  

What is the smallest 5-digit number by using 0, 1, 2, 3 and 4? (Each digit can only be used once).

-Smallest 5-digit number: Số có 5 chữ số nhỏ nhất;

-Each digit can only be used once: Mỗi chữ số chỉ dùng một lần

(a)  

Peter has 7 $1 coins, 2 $2 coins and 1 $5 coin, how many way(s) can he buy for a souvenir costed $7 without any changes?

Coin: Đồng xu; Way: Cách; Souvenir: Đồ lưu niệm; Without any changes: Không cần trả lại tiền

(a)