TIMO 2021 Grade 3 Preliminary Set 2

If tomorrow will be Monday, which day of the week was 123 days ago?

By observing the pattern, what is the English letter in the space provided? C, m, D, n, E, o, F, p, G, __

What is the suitable number to replace the star below? 12, 20, 30, 42, 56, ★, …

Refer to the pattern below, how many ➲ are there in the 5th group?

Find the missing number in the table on the right. Rows: 2 5 1 0; 3 6 1 8; 4 7 2 8; 5 8 ? 0.

Find the value of $142-454+158+700+554$.

Find the value of 360÷$2+360$÷$3+360$÷$5+360$÷$8+360$÷12.

Find the value of 15×$21+16$×$30+7$×15.

Let A and B represent 1-digit numbers. What is the value of $A+B$ if the equation below is correct? AB × $A=390$

What is the value of K if the equation below is correct? K×4÷$3-2+1=15$

M is the sum of the largest 2-digit even number and the smallest 3-digit odd number. Find the value of M.

A is 9 times B and the difference between A and B is 360. Find A.

Observe the pattern and find the difference between the 54th number and the 55th number in the following sequence. 1, 3, 7, 13, 21, …

Define the new operation symbol a⊗b=(2×b−a)×(a+3×b), find the value of (7⊗5).

There are 123 consecutive numbers from 1 to 123 written on the board. Tracy erases 2 random numbers and replaces them by their sum. Tracy does that until there is only 1 number left on the board. What is the last number?

How many squares are there in the figure below?

They want to paint all surface of the 3D figure below. At least how many squares do they have to paint over?

How many rectangles containing the star are there in the figure below?

Candace uses 3 squares and 1 rectangle to form a bigger square on the right. If the perimeter of the smallest square is 12cm, find the perimeter of the shaded rectangle in cm.

Refer to the pattern below. How many circles are there in the first 123 symbols?