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.
| I can “analyse” a till slip and answer questions about it correctly. | Not at all | Fairly well | Well | Really well |
| I can use the memory keys on the calculator correctly. | Not at all | Fairly well | Well | Really well |
| I was able to calculate the amount of the family’s accommodation correctly. | Not at all | Fairly well | Well | Really well |
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.