(23-24) Math 7 Winter Midterm Practice

Front

What is a natural number?

Back

A natural number is a positive integer, starting from 1 and going upwards (1, 2, 3, ...). It does not include negative numbers or fractions.

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, the absolute value of -3 is 3, written as | -3 | = 3.

Front

Calculate the expression: -8 + 2

Back

The result is -6.

Front

If Joseph walked 2.4 miles to the store and then 1.6 miles to eat, how far did he walk in total?

Back

Joseph walked a total of 4 miles.

Front

Simplify the expression: (7x - 8) - (5x + 5)

Back

The simplified expression is 2x - 13.

Front

What is the difference between a rational number and an irrational number?

Back

A rational number can be expressed as a fraction of two integers, while an irrational number cannot be expressed as a simple fraction (e.g., pi, √2).

Front

What is the formula for the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width: Area = length × width.

Front

What is the distributive property in mathematics?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute a number across a sum.

Front

What is a variable in algebra?

Back

A variable is a symbol (often a letter) that represents an unknown value in mathematical expressions or equations.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form, combining like terms and eliminating unnecessary parts.