Numerical Expressions

What is the difference between an expression and an equation?

• An expression is a combination of numbers and operations without an equal sign, while an equation states that two expressions are equal.

• An expression is a statement that can be true or false, while an equation is a mathematical sentence that shows the relationship between two expressions.

• An expression is always a single number, while an equation can contain multiple numbers and operations.

• An expression is a type of equation that does not require an equal sign.

What is the result of 7 x (2 + 3)?

• 30

• 35

• 25

• 40

What is the result of 8 ÷ 2 x 4?

• 12

• 14

• 16

• 18

What does the expression 15 ÷ 3 + 2 represent?

• It represents the operation of dividing 15 by 3 and then adding 2.

• It represents the operation of multiplying 15 by 3 and then subtracting 2.

• It represents the operation of adding 15 to 3 and then dividing by 2.

• It represents the operation of subtracting 15 from 3 and then multiplying by 2.

What is the order of operations in mathematics?

• Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)

• Addition, Subtraction, Multiplication, Division, Exponents, Parentheses

• Multiplication, Division, Addition, Subtraction, Parentheses, Exponents

• Exponents, Parentheses, Addition, Subtraction, Multiplication, Division

What does 3² mean?

• 3 + 3

• 3 - 3

• 3 x 3

• 3 ÷ 3

Identify the error in the expression: 5 - 3 + 2 = 0.

• Addition was done first and you should have subtracted first.

• The expression is correct as it is.

• Multiplication should have been done before addition.

• The numbers used in the expression are incorrect.

What is the value of (3 + 5)²?

• 32

• 48

• 64

• 72

How do you simplify the expression 10 - (3 + 2)?

• 6

• 5

• 4

• 7

What is the numeric expression for 'add four and nine and then multiply by six'?

• (4 + 9) x 6

• 4 + (9 x 6)

• (4 x 6) + 9

• (4 + 6) x 9