HKIMO 2026 Grade 3 National Preliminary Set 03

Today is Monday, 2 May. What day of the week is the last day of this month?

Find the 6th letter in the pattern: X, U, R, O, ...

How many sun symbols are there in the next group?

Find the 8th number in the sequence: $11,13,17,23,31,\ldots$

How many squares are there in the first 63 figures, counting from the left?

Calculate $176+249+811+257+124+533$.

Calculate $11+15+19+23+27+31+35+39+43+47+51$.

Calculate $15\times7+113\times15+60\times15$.

Find $251\div8+100\div8+337\div8$.

Find $x$ given $52-(x+3)\times2=10$.

Define $a\odot b=(b+2)\times(a+7)$. Find $13\odot23$.

Maggie has 57 marbles and Bella has 45. How many must Maggie give Bella so that Bella has 5 times as many as Maggie?

The numbers form an arithmetic sequence. Find the sum of the 7th and 11th terms: $20,23,26,29,32,\ldots$

Find the largest 3-digit number divisible by 6.

Five consecutive even numbers sum to 240. Find the second largest.

How many triangles are there in the figure below?

How many rectangles contain both stars in the figure below?

A rectangle has perimeter 200 cm. Its length is 56 cm more than its width. Find its width.

At least how many squares can be seen when observing the figure below from the right?

Find the perimeter of the figure below.