1.25 To use a range of techniques for performing calculations

Mathematics

Number concept

Educator section

Memorandum

1. Amount will vary according to size of the learner’s family and the age of the children in the family.

Brain Teaser

233 + 27 – 53 + 29 – 41 + 13 – 18 = 190

Leaner section

Content

Activity: to use a range of techniques for performing calculations [lo1.10.5]

1. Study the notice and then answer the questions that follow. You may use your calculator. (Remember the memory keys!)

• What amount will your father have to pay if your family stays one night at “Suzie’s Accommodation”?
• You eat dinner and breakfast before leaving again.
• Explain how you calculated your answer!

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Time for self-assessment

It is important for us to know how you feel about the work that we have completed. Consider the criteria and colour the block that reflects how you feel.

I can “analyse” a till slip and answer questions about it correctly.

Brain teaser!

Vusi is a passenger on a ferry. He notes that at the first stop 18 people get on and 13 get off. At the next stop 41 people get on and 29 get off. At the third stop 53 people get on and 27 get off. If there were then 233 people left on the ferry, how many people were on the ferry when Vusi got on?

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Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.10: We know this when the learner uses a range of techniques to perform written and mental calculations with whole numbers including:

1.10.5: using a calculator.