TIMO 2021 Grade 4 Preliminary Set 1

According to the pattern shown below, how many suns are there from the 1st to the 29th symbol counting from the left?

Today is Tuesday. Which day of the week will it be 23 days later?

People can buy couple tickets or single tickets to see a performance. The staff counted and found that there were a total of 50 people and 30 tickets. How many people went to the theatre alone?

According to the pattern below, find the next term in the sequence. 1, 2, 4, 7, 11, 16, 22, …

A fruit store had a basket of oranges. They sold half of the oranges in the first day. In the 2nd day, they sold 25 oranges and threw away 7 rotten oranges. They found that there were 50 oranges left. How many oranges does the store have originally?

Calculate 360÷$2+360$÷$3+360$÷5.

Find the value of $1+2+3$+...+$100+101+100$+...+$3+2+1$.

Calculate 130×$42+260$×$19-30$×130.

Find the value of $100-95+90-85+80-75$+...+$10-5$.

Today is 1st November 2020. Find the product of today’s day, month and year.

What is the largest 4-digit number that can be divisible by 5 and 3?

Find the last digit of 5×15×25×...×85×95.

Define the operation symbol a⊕b=(a−b)×(a+b). Find the value of 243⊕143.

The sum of two natural numbers A and B is 2020. A is 3 times of B. Find the difference between A and B.

Given A1234A is a 6-digit number divisible by 9 and 2, find the value of A.

How many rectangles in the figure below contain the shaded region?

A big square is formed by 16 squares with side length 24 cm. How many cm is the perimeter of the big square?

The area of a rectangle is 20. If the sides of the rectangle are natural numbers, how many different value(s) of the perimeter of this rectangle is / are there?

An Egyptian pyramid with a square base has the shape as the figure below. How many sides does it have?

Donald had a square sheet of paper. He cut along the dotted line to get rid of 4 corners and got a smaller square with perimeter 40cm. Find the area of the original sheet of paper in cm2.