Skip to content / Đến nội dung
ThichHocToan.com

AMO 2025 Primary 3 (Grade 3)

Question 1

An L-shape is placed on a triangular ruler as shown. Use the ruler markings to find the perimeter of the L-shape, in centimeters.

Question illustration
  1. 10 cm
  2. 12 cm
  3. 14 cm
  4. 16 cm

Question 2

Jada cuts a 30 cm ribbon into three pieces with whole-number lengths: short, medium, and long. The short piece is 4 cm; the medium piece is longer than the short piece, and the long piece is longer than the medium piece. What is the longest possible length of the long piece?

Question illustration
  1. 19 cm
  2. 20 cm
  3. 21 cm
  4. 23 cm

Question 3

What number is halfway between 2 and 14 on the number line?

Question illustration
  1. 5
  2. 6
  3. 7
  4. 8

Question 4

The cube net has six letters on its faces. When it is folded into a cube, which letter is opposite A?

Question illustration
  1. E
  2. H
  3. M
  4. T

Question 5

Houses A, B, C, D lie along a straight country road in the order shown. D is 10 miles from A, C is 5 miles from A, and D is 7 miles from B. How far is C from B?

Question illustration
  1. 1 mile
  2. 2 miles
  3. 3 miles
  4. 5 miles

Question 6

Which of these numbers has the greatest value?

Question illustration
  1. $\frac56$
  2. $\frac25$
  3. $\frac23$
  4. $\frac6{10}$

Question 7

Tim starts reading at 08:50 a.m. and reads for 75 minutes. What time does he finish?

Question illustration
  1. 09:55 a.m.
  2. 10:00 a.m.
  3. 10:05 a.m.
  4. 11:25 a.m.

Question 8

How many whole numbers divide 24 evenly? Include 1 and 24.

Question illustration
  1. 8
  2. 12
  3. 16
  4. 24

Question 9

A pinwheel is drawn on a centimeter grid as shown. What is its total area, in square centimeters?

Question illustration
  1. 16 cm²
  2. 18 cm²
  3. 20 cm²
  4. 36 cm²