Basic Math Operations

Front

What is the perimeter of a rectangle?

Back

The perimeter of a rectangle is the total distance around the rectangle, calculated as P = 2(length + width).

Front

What is the divisibility rule for 2?

Back

A number is divisible by 2 if its last digit is even (0, 2, 4, 6, or 8).

Front

What is the divisibility rule for 3?

Back

A number is divisible by 3 if the sum of its digits is divisible by 3.

Front

What is a fact family?

Back

A fact family is a group of related addition and subtraction or multiplication and division equations that use the same numbers.

Front

What is the perimeter of a rectangle with length 10 cm and width 3 cm?

Back

The perimeter is 26 cm (P = 2(10 + 3) = 26).

Front

Which numbers are divisible by 9? Give an example.

Back

A number is divisible by 9 if the sum of its digits is divisible by 9. For example, 99 (9 + 9 = 18, which is divisible by 9).

Front

What is the rule for divisibility by 6?

Back

A number is divisible by 6 if it is divisible by both 2 and 3.

Front

What does the inequality 1.2 > 0.16 mean?

Back

It means that 1.2 is greater than 0.16.

Front

What is the formula for calculating the area of a rectangle?

Back

The area of a rectangle is calculated as A = length × width.

Front

What is the difference between an equation and an inequality?

Back

An equation states that two expressions are equal, while an inequality shows the relationship between expressions that are not necessarily equal.