ASMO Mathematics 2021 — Primary 3 / Grade 3

The figure is formed by six line segments. How many triangles are in it?

Find the value of (10 − 4) ÷ 1 ÷ 1 + 2 6/12 − 3 + 2.5.

How many unit cubes are in the pictured stepped stack?

Siti is 18 years older than his son. Their ages sum to 96. How old is the son?

Four people can sit at one table. Three tables placed end to end seat eight as pictured. How many tables end to end will seat 24 people?

Alice finishes a book in three days. She reads an average of 120 pages on the first two days and 85 pages on the third. How many pages are in the book?

Kenny practices piano 30 minutes longer than Lily. Together they practice 1 hour 50 minutes. How many minutes does Lily practice?

Rosma starts at 7 and counts by sixes: 7, 13, 19, 25, … . What is the 25th number?

Which is greatest: A. 1/3, B. 1/4, C. 1/6, D. 2/9, E. 1/7?

Fill the next two numbers: 198, 297, 396, ( ), ( ).

Four children each shake hands with every other child once. How many handshakes occur?

A father and mother are 77 years old in total; the father is 11 years older. How old is the mother?

Chicken wings cost USD 3 each, with one free for every four bought. What is the cost for 55 wings?

Charles is celebrating his 15th birthday. His uncle says Charles has celebrated two more birthdays than he has. The uncle was born on 29 February. What is the uncle's minimum age?

In class Year One B, 30 students like chicken rice, 47 like fried rice, and 18 like both. How many students are in the class?

A bus has 44 seats, 27 boys aboard and 14 vacant seats. How many people are aboard?

Watermelons cost USD 3 each with one free for every six bought. Lily wants 56 watermelons. How much does she pay?

In a class of 60, 42 can swim, 46 can cycle and 55 can play badminton. What is the smallest possible number who can do all three?

A clock takes 6 seconds to strike three times. How many seconds to strike ten times?

Girls are 1/4 more than boys. Boys are 1/x fewer than girls. Find x.