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4.2 Prime numbers<10 ...........................................................................

4.3 The first four multiples of 12 ...........................................................................

4.4 The first four square numbers ...........................................................................

L e arning uni t 1 Assessment 1.1

Assessment of myself: by myself: Assessment by Teacher:
I can… 1 2 3 4 Critical Outcomes 1 2 3 4
give examples of different types of numbers; (Lo 1.1) Critical and creative thinking
define prime numbers; (Lo 1.1) Collaborating
define compound numbers; (Lo 1.1) Organising en managing
apply divisibility rules; (Lo 1.2.6) Processing of information
determine multiples of a number; (Lo 1.2.6) Communication
determine factors of a number; (Lo 1.2.6) Problem solving
determine prime numbers and prime factors; (Lo 1.2.6) Independence
determine even and odd numbers. (Lo 1.1)

good average not so good

Comments by the learner: My plan of action: My marks:
I am very satisfied with the standard of my work. < Date :
I am satisfied with the steady progress I have made. Out of:
I have worked hard, but my achievement is not satisfactory. Learner :
I did not give my best. >
Comments by parents: Comments by teacher:
Signature: Date : Signature: Date :

Assessment

Learning outcomes(LOs)
LO 1
Numbers, Operations and RelationshipsThe 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 standards(ASs)
We know this when the learner :
1.1 describes and illustrates the historical and cultural development of numbers;
1.2 recognises, classifies and represents the following numbers in order to describe and compare them:1.2.3 numbers written in exponent form; including squares and cubes of natural numbers and their square roots and cube roots;1.2.6 multiples and factors;1.2.7 irrational numbers in the context of measurement (e.g. square and cube roots on non-perfect squares and cubes);

Memorandumactivity 1

2. {2, 3, 5, 7, . . . }

Two factors: 1 and itself

{4, 6, 8, 9, . . . }

More than 2 factors

  • Own choice: Ends on even numbers
  • Sum of all the numbers ÷ 3
  • Last numbers ÷ 4: e.g. 84 ÷ 4 = 21
  • Ends on 0 / 5
  • Divisible by 2 and 3
  • Last 3 numbers ÷ 8: e.g. 3 720 ÷ 8 = 90
  • Add all the numbers ÷ 9
  • Ends on 0
  • e.g. 2 6 8 2 + 8 = 10, 10 – 10 = 0

0 ÷ 11 = 0, 4 + 6 = 10

4. 2; 3; 4; 5; 6; 7; 8; 9; 10; 11

√ × × × × × × × × √

  • Count on, e.g. in 3’s: Number ÷ 3
  • Number that can divide into another number
  • Number with 2 factors: 1 and itself
  • Prime number that can divide into another number
  • Even: (Ends on even numbers) [divisible by 2]

Uneven: (Not divisible by 2)

6. F 48 = {1, 2, 3, 4, 6, 8, 12, 16, 24, 48}

7. {24, 30, 36, 42, 48, 54}

8. {19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73}

9. {21, 25, 27, 33, 35, 39, 45, 49}

10. {2, 5}

11. {10, 25, 50}

12. x ³ (number)³: 1, 8, 27, 64, 125, 216

13. x ² (number)²: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100

Homework assignment 1

1.1:, b ≠ 0 (Decimal: recurring or ends)

  • :Number with factors: 1 and itself
  • :Number with more than two factors
  • :Prime number that can divide onto a number
  • :4, 6
  • :1, 9, 15, 21, 25, 27, 33, 35
  • :6, 12, 18, 24, 30, 36
  • :1, 2, 3, 4, 6, 12
  • :2, 3
  • :1, 2, 3, 4, 6, 9, 12, 18, 36
  • :-, 0, 3, -9, 16
  • :-, 0, 3 -9, 16, 2
  • :
  • :1, 2, 3, 4
  • :2, 3, 5, 7
  • :12, 24, 36, 48
  • :1, 4, 9, 16

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Source:  OpenStax, Mathematics grade 8. OpenStax CNX. Sep 11, 2009 Download for free at http://cnx.org/content/col11034/1.1
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