When early rounding changes a result
Compare exact representations with repeated calculations using rounded values.
- Easy
- 30
- Medium
- 30
- Hard
- 40
- Total
- 100
Victorian Curriculum F–10 Version 2.0
Build your skills one question at a time. Choose a topic, try a question and use the worked steps to understand your answer.
Explore the topics
Compare exact representations with repeated calculations using rounded values.
Find shared numerical and variable factors and check factorisation by expansion.
Apply exponent laws to algebraic products and quotients without losing restrictions.
Add, subtract, multiply and divide simple algebraic fractions with valid denominator restrictions.
Use distributive, area and pattern methods to expand products and factorise monic quadratics.
Find an unknown value and make a chosen variable the subject of a formula.
Trace list-based algorithms and implement a tested program using a data structure.
Translate contexts and rearranged formulas into solvable linear equations.
Solve inequalities, interpret boundary inclusion and graph the solution set.
Find a pair satisfying two equations and connect it with a graph intersection.
Use equal gradients or negative reciprocals and recognise horizontal–vertical exceptions.
Explore quadratic, reciprocal, circle and exponential relations using values, features and graphs.
Clear denominators or combine equivalent fractions before solving.
Use factorisation, square roots and the null factor law while checking all solutions.
Rewrite values using a common base and solve the resulting exponent equation.
Build growth, decay and inverse-proportion models and evaluate their assumptions and predictions.
Use graphing and systematic refinement while checking the search interval and number of roots.
Decompose solids for volume and identify only exposed faces for surface area.
Interpret powers and multiplicative changes on logarithmic axes and defined indices.
Apply right-triangle methods to practical routes and measured viewing angles.
Use direct and inverse proportion, dimensional scaling and measurement-error checks in practical models.
Use a chain of stated reasons to solve spatial problems and develop proofs.
Interpret nodes and edges as relationships and identify direct connections and components.
Use quartiles, IQR and displays to discuss centre, spread, shape and outliers of continuous data.
Describe the strength, direction and shape of a numerical relationship and use a fitted line carefully.
Construct categorical tables and compare conditional proportions using the correct totals.
Link a report’s claims to its data, displays, sample and privacy practices.
Plan a bivariate investigation, analyse its pattern and report what can reasonably be inferred.
Interpret “given” as a changed sample space and use simulations to estimate conditional events.
Describe complete two- and three-step sample spaces and calculate events with changing or unchanged probabilities.