Expression, equation, formula or inequality?

The Maths Habit

Sort these into groups.
How did you decide?

4n + 1k ≤ 74n + 1 = 9

P = 2l + 2w3a − b4n + 1 > 9

Expression
Numbers and letters with no equals sign.
Equation
Has an equals sign and one letter to find.
Formula
Has an equals sign and links two or more letters.
Inequality
Uses <, >, ≤ or ≥.

Is there an = sign?NoYesIs there <, >, ≤ or ≥?Two or more letters?NoYesNoYesexpressioninequalityequationformula

7n + 2

Is there an = sign?NoYesIs there <, >, ≤ or ≥?Two or more letters?NoYesNoYesexpressioninequalityequationformula

v = u + at

Is there an = sign?NoYesIs there <, >, ≤ or ≥?Two or more letters?NoYesNoYesexpressioninequalityequationformula

x − 3 < 10

Is there an = sign?NoYesIs there <, >, ≤ or ≥?Two or more letters?NoYesNoYesexpressioninequalityequationformula

Which word?

6m = 42 Equation

Which word?

2(a + b) Expression

Which word? Circle Yes or No at each step.

5p − 9 = 21
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerequation

Which word? Circle Yes or No at each step.

A = bh
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerformula

Which word? Circle Yes or No at each step.

5p − 9 = 21
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerequation

Which word? Circle Yes or No at each step.

8 − k ≥ 2
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerinequality

Which word? Circle Yes or No at each step.

5p − 9 = 21
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerequation

Which word? Circle Yes or No at each step.

9 − 4y
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerexpression

Which word? Circle Yes or No at each step.

5p − 9 = 21
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerequation

Which word? Circle Yes or No at each step.

F = 1.8C + 32
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerformula

Which word? Circle Yes or No at each step.

5p − 9 = 21
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerequation

Which word? Circle Yes or No at each step.

15 = 3h + 6
Is there an = sign?Is there <, >, ≤ or ≥?Two or more letters?NoYesNoYesNoYesexpressioninequalityequationformula
Answerequation

Expression, equation, formula or inequality? worksheet, page 1

Expression, equation, formula or inequality? worksheet, page 2

Answer sheet

  1. Write an inequality that uses the letter n.

    n + 3 > 10, for example

  2. Sam says 2x + 3 is an equation. What would you say to him?

    It has no equals sign

  1. A  12 = 5t − 3    B  4(p − 2)
    Which is an expression and which is an equation?

    A equation, B expression

  2. A  C = 5n + 20    B  3y − 1 ≤ 11
    Which is a formula and which is an inequality?

    A formula, B inequality

  3. Ana says 2a + 3b is a formula because it has two letters. Is she right? Explain.

    No: no = sign, so an expression
Exit tickets to print