0.5 To solve problems in context

Mathematics

Subtraction

Educator section

Memorandum

Leaner section

Content

Activity 3.11 to solve problems in context [lo 1.6.1]

To use a range of techniques to perform calculations [lo 1.8.2]

* * This is a task for your portfolio. You have been talking about a budget. Now answer the following questions. Work as neatly as you can, but first find out how this task is going to be assessed.

To find out at home:

1. Do your parents make use of a monthly budget?

2. Make a list of everything for which your parents need to budget each month.

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3. What is the biggest monthly expense for your family?____________________

4. What amount do your parents budget for groceries each month (approximately - you may round off the amount)__________________________________________

5. What is the difference between this amount and the amount that your parents must pay monthly for your school fees?_____________________________________

6. How much do you think a family of four (two adults and two teenage children) should budget for entertainment (cinema and eating out, etc.) each month?

Explain your answer.

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7. Prepare a budget for YOURSELF for the next month (i.e. how much money you need and what for)

8. How much money will you have left to save if you received R300,00 pocket money per month?

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Assessment: budget

Test

1. What numbers are needed to ensure that the total in each direction is 47?

(3)

2. Provide the answers to the following without doing any written calculations:

2.1 975 – 325 = __________________________________

2.2 1 050 – _______________________________________ = 900

2.3 103__________ – 102_____________ = ____________ (3)

3. True or False?

3.1 The difference between 7 000 en 3 628 is 3 372 ____________________

3.2 25 less than 18 500 is 18 275 ________________________ (2)

4. Ebrahim had to calculate the following: 130 000 – 27 864

His calculation is incorrect. Circle each mistake. (2)

5. Correct Ebrahim's sum.

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6. Reduce 408 276 by 129 479.

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7. What will the subtrahend be if the minuend is 5 346 200 and the difference is 1 326 408?

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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 1.6: We know this when the learner solves problems in context including contexts that may be used to build awareness of other Learning Areas, as well as human rights, social, economic and environmental issues such as:

1.6.1: financial (including buying and selling, profit and loss, simple budgets, reading and interpreting accounts, and discount);

Assessment Standard 1.8: We know this when the learner estimates and calculates by selecting and using operations appropriate to solving problems that involve:

1.8.2: addition and subtraction of whole numbers.