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- Add the three parts of Hannah's hike in meters and answer a follow-up.
- Work out each result with its unit and say what kind of quantity it is.
- Find the unit mistake in Samir's conversion of seconds to hours.
- Hannah's labeling machine: find the time for 930 bottles in hours and minutes.
- Use Maya's stride length to answer a question about her walk, with sensible accuracy.
- Find the mistake in Hiro's conversion to seconds in a 30-day month.
- A pump moves water at a steady rate: find cubic meters moved in one day.
- Mason's dishwasher: find weekly water use and report it to a sensible accuracy.
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Units, quantities and a sensible level of accuracy: 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