Chocolate boxes 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students This task is about working out the weight and price of boxes of chocolate. A dairy owner bought 10 boxes of chocolate bars. Each full box weighed 5 kg. Each chocolate bar weighed 250 g. (Remember that 1000 g = 1 kg). Question 2Change answer a) How many chocolate bars were there in the 10 boxes altogether? bars Question 2Change answer b) Redwood School wanted 80 chocolate bars for their gala. How many boxes would they need to buy? boxes Question 2Change answer c) If each chocolate bar cost 95c, how much would all 80 bars cost? $ Question 2Change answer d) The dairy owner sold \(1 \over 4\) of the chocolate bars on the weekend. How many kilograms did she sell? kg Task administration: This task can be completed with pencil and paper or online (with auto marking displayed to students). Level: 4 Curriculum info: Maths, Geometry and Measurement, Measurement Keywords: decimals, fractions, multiplication, division, weight, money Description of task: Students work out problems about the weight and price of chocolate bars from some given information. Learning Progression FrameworksThis resource can provide evidence of learning associated with Multiplicative thinking, sets 6-7 within the Mathematics Learning Progressions Frameworks.Read more about the Learning Progressions Frameworks. Answers/responses: Y7 (04/1997) Y8 (04/1997) a) 200 difficult moderate b) 4 difficult moderate c) 76 moderate easy d) 12.5 [accept 12 kg 500 g] very difficult very difficult Diagnostic and formative information: Common Errors Likely Calculation Likely Reason a) 20 5 × 4 Number of chocolate bars per box, not altogether. b) 7600 95 × 80 Number of cents rather than dollarsor decimal point missing.
