Grade 7 Math Workbook Correction Unit 2.6-2.7

Write if the following is a formula, an expression or an equation

ab + 7c

• Formula

• Expression

• Equation

• I don't know

Write if the following is a formula, an expression or an equation:

m = 2b - 3 g²

• Expression

• Formula

• Equation

• Variable

Write if the following is a formula, an expression or an equation:

8 (x - 9)

• Expression

• Formula

• Equation

• Variable

Write if the following is a formula, an expression or an equation:

2x + 5 = 13

• Expression

• Formula

• Equation

• Variable

What is the main difference between an expression and an equation?

• An expression always has an equals sign, while an equation does not.

• An equation always has an equals sign, while an expression does not.

• Both have equals signs.

• Neither has an equals sign.

What is the value of x in the equation 2x + 1 = 11?

• 4

• 5

• 6

• 3

If 5x - 2 = 18, what is the value of x?

• 3

• 4

• 5

• 6

Complete the missing numbers in the flow chart if x = 4

• 2

• 20

• 4

• 5

What is the value of x in the equation 3(x + 4) = 21?

• 2

• 3

• 4

• 5

Complete the missing numbers in the flow chart if x = 3

• 4

• 7

• 3

• 5