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- Say what the last step is in each expression and whether it is a sum, product or quotient.
- Water tank problem: say what each number and term in the expression stands for.
- Hannah's mean score: say what the parts of the new-mean expression mean.
- Party room problem: interpret the cost per guest when the bill is shared equally.
- Theater problem: interpret the revenue expression for ticket price.
- Find what is wrong with Owen's reasoning about the smallest value of an expression.
- Explain why the two products differ by 2 times a factor, without multiplying out.
- Use the structure of each expression to decide its sign, without trying values.
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Interpreting the parts of an expression: the lesson ›More Chapter 1 worksheets: Real numbers, expressions and properties
- 1.1Elements and membership
- 1.2Writing sets: roster, rule and the empty set
- 1.3Commutative, associative and distributive properties
- 1.4Identity and inverse elements
- 1.5Closure
- 1.6Interpreting the parts of an expression
- 1.7Units, quantities and a sensible level of accuracy
- 1.8Estimating a huge quantity from small facts