ELT 12/10 Review

Front

What is a variable in mathematics?

Back

A variable is a symbol, often represented by a letter, that stands for a number that can change or vary.

Front

Which of the following is NOT a variable: 8, x, u, n?

Back

8 is NOT a variable; it is a constant.

Front

If b = 7 and e = 2, what is 3b + e?

Back

23

Front

If j = 4, what is the value of 2j + 3?

Back

11

Front

Given y = 10, what is the value of 3y?

Back

30

Front

What is the definition of a constant in mathematics?

Back

A constant is a fixed value that does not change.

Front

What is the result of the expression 5 + 3?

Back

8

Front

What is the value of x if 2x = 10?

Back

5

Front

What does the term 'evaluate' mean in mathematics?

Back

To evaluate means to calculate the value of an expression.

Front

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

Back

Area = length × width.