MEDIUM LEVEL

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. The acronym PEMDAS helps remember the order: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by performing operations and combining like terms.

Front

What is a negative number?

Back

A negative number is a number that is less than zero, often used to represent a loss or a decrease.

Front

What is the result of subtracting a larger number from a smaller number?

Back

The result is a negative number.

Front

What is multiplication of two negative numbers?

Back

The multiplication of two negative numbers results in a positive number.

Front

What is the result of -3(-5)?

Back

The result is 15, because multiplying two negative numbers gives a positive result.

Front

What is the result of -42 ÷ (-6)?

Back

The result is 7, because dividing two negative numbers gives a positive result.

Front

What is the significance of parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression.

Front

What is the result of 5 - 3 + 2?

Back

The result is 4, but according to the order of operations, you should subtract first: 5 - 3 = 2, then 2 + 2 = 4.

Front

What is the result of -24 - 10 x 4?

Back

The result is -64, because you must perform multiplication before subtraction: -24 - 40 = -64.