NUMBER CONCEPTS

What are the different types of numbers?

Answer explanation

Natural numbers, whole numbers, integers, rational numbers, and irrational numbers, odd numbers, even numbers, prime numbers, square numbers, cubed numbers and fractions, perfect numbers, palindromic numbers and narcissistic numbers

what is a multiple of a number?

• A multiple of a number is the result of multiplying that number by an integer.
• A multiple of a number is the result of subtracting that number by an integer.
• A multiple of a number is the result of dividing that number by an integer.
• A multiple of a number is the result of adding that number by an integer.

what is a LCM of a number?

• The LCM of a number is the largest multiple that is common to two or more numbers.
• The LCM of a number is the sum of two or more numbers.
• The LCM of a number is the smallest multiple that is common to two or more numbers.
• The LCM of a number is the difference between two or more numbers.

what is a factor of a number?

• A factor of a number is a whole number that can be divided evenly into that number.
• A factor of a number is a decimal number that can be divided evenly into that number.
• A factor of a number is a number that cannot be divided evenly into that number.
• A factor of a number is a prime number that can be divided evenly into that number.

What is the HCF of a number?

• The HCF of a number is the smallest positive integer that divides the given numbers without leaving a remainder.
• The HCF of a number is the sum of the given numbers.
• The HCF of a number is the difference between the given numbers.
• The HCF of a number is the largest positive integer that divides the given numbers without leaving a remainder.

What is the divisibility rule for 2?

• Last digit is odd (1, 3, 5, 7, 9)
• Last digit is even (0, 2, 4, 6, 8)
• Number is a multiple of 3
• Number is a prime number

What is the divisibility rule for 3?

• The sum of the digits of the number should be divisible by 3.
• The number should be a prime number
• The number should be odd
• The number should end in 0 or 5

What is the divisibility rule for 4?

• The number formed by the last two digits is divisible by 4.
• The number is divisible by 5
• The number is divisible by 3
• The number is divisible by 7

What is the divisibility rule for 7?

• Subtract the last digit from the rest of the number and check if the result is divisible by 7
• Multiply the last digit by 3 and check if the result is divisible by 7
• Add all the digits together and check if the sum is divisible by 7
• Double the last digit, subtract it from the rest of the number, and check if the result is divisible by 7.

What is the divisibility rule for 8?

• The number must end in 8 or 0
• The sum of the digits must be divisible by 8
• The last three digits of a number must be divisible by 8.
• The number must be even