Divisibility, GCD and LCM

Types of exercises: multiples of a number, factors of a number, divisibility rules, missing digit and divisibility rules, prime numbers, composite numbers, greatest common divisor, lowest common multiple, word problem: divisibility.

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All The four operations Written methods Squares and cubes Order of operations Estimating Division with remainder Prime factorisation Divisibility, GCD and LCM How many numbers have a given property

Solved: 0 of 10

Problem

Find LCM(35, 45)

Problem

Find GCD(42, 36)

Problem

Which of these numbers is composite?

Problem

Which of these numbers is divisible by 4?

Problem

There are 108 tulips and 24 daffodils. They are to be made into identical bunches using all the flowers. What is the largest number of bunches?

Problem

List all the digits that can replace ☐ so that 70☐ is divisible by 4.

Problem

Which of these numbers is prime?

Problem

Which of these numbers is a multiple of 7?

Problem

How many factors does 129 have?

Problem

Find LCM(18, 15)

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