Substitute and rearrange formulas
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Log in to continueFind an unknown value and make a chosen variable the subject of a formula.
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Use v = u + at. If u = 3, a = 1 and t = 2, find v.
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Answer: 5
- Substitute v = 3 + 1 × 2.
- Multiply before adding.
- v = 5.
- 1 × 2 = 2.
- 3 + 2 = 5.
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Curriculum reference
Victorian Curriculum F–10 Version 2.0
Pi Leo practice scope
Find an unknown value and make a chosen variable the subject of a formula.
Read the official VCAA curriculum description (VC2M10A05)
These quizzes practise concepts within this topic. Multiple-choice answers alone do not demonstrate drawing, conducting an investigation or using a digital tool.
- VC2M10A05-C01Use brackets and operation order when substituting.
- VC2M10A05-C02Undo operations while treating other variables as quantities.
- VC2M10A05-C03Apply and explain substitute and rearrange formulas using calculate and explain each step.
- VC2M10A05-C04Apply and explain substitute and rearrange formulas using read and connect representations.
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Subskills
These practice subskills map to the curriculum topic. Guided activities cover skills beyond multiple-choice questions.
Descriptor-derived subskills
- D01Put values into a formulaUse brackets and operation order when substituting.
- D02Make a variable the subjectUndo operations while treating other variables as quantities.
- D03Calculate and explain each stepApply and explain substitute and rearrange formulas using calculate and explain each step.
- D04Read and connect representationsApply and explain substitute and rearrange formulas using read and connect representations.