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Mathematics

Multiplication

Educator section

Memorandum

1. 150; 1 500; 15 000; 150 000; 1 500 000; 15 000 000; 1.500 000 E

2. Screen too small for answer.

3. Error

4. 4.1 3

  • 5
  • 7

5.1

50
125
200
300

5.2

200 50
500 125
800 200
1 200 300

6. Answer remains the same.

Leaner section

Content

Activity: to use a range of techniques to perform calculations [lo 1.10.5]

To determine output values for given input values [lo 2.3.1, lo 2.3.3]

Were you able to explain how to programme a pocket calculator? If not, ask a friend to help you. Answer the following questions if you understand how to do the programming.

1. Key in: 10 x 15 = = = =

Write down your answers each time: ______________________________________

____________________________________________________________________

2. Why does your calculator eventually say 15 000 000 E? _________________

_____________________________________________________________________

3. What does die E stand for? ________________________________________

4. Complete the following:

4.1 346 x 1 000 = 346 x 10o ___________________________________

4.2 346 x 100 000 = 346 x 10o _________________________________

4.2 346 x 10 000 000 = 346 x 10o _______________________________

5. Complete the following tables:

5.1 1 × 25 25
2 × 25 _____
5 × 25 _____
8 × 25 _____
12 × 25 _____
5.2 1 × 100 100  4 25
2 × 100 _____  4 _____
5 × 100 _____  4 _____
8 × 100 _____  4 _____
12 × 100 _____  4 _____

6. What do you realise when you look at the answers of these two tables?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

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.

Learning Outcome 2: The learner will be able to recognise, describe and represent patterns and relationships, as well as to solve problems using algebraic language and skills.

Assessment Standard 2.3: We know this when the learner determines output values for given input values, or input values for given output values, using:

2.3.1: verbal descriptions.

Questions & Answers

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Source:  OpenStax, Mathematics grade 6. OpenStax CNX. Sep 10, 2009 Download for free at http://cnx.org/content/col11030/1.1
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