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Answer: ………………………………….

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 counts forwards and backwards in a variety of intervals;
1.3 recognises and represents the following numbers in order to describe and compare them: common fractions with different denominators, common fractions in diagrammatic form, decimal fractions and multiples of single-digit numbers;
1.3.2 common fractions with different denominators, including halves, thirds, quarters, fifths, sixths, sevenths and eighths;
1.3.3 common fractions in diagrammatic form;
1.3.4 decimal fractions of the form 0,5; 1,5 and 2,5; etc., in the context of measurement;
1.3.6 multiples of single-digit numbers to at least 100;
1.5 recognises and uses equivalent forms of the numbers including common fractions and decimal fractions;
1.5.1 common fractions with denominators that are multiples of each other;
1.5.2 decimal fractions of the form 0,5; 1,5 and 2,5, etc., in the context of measurement;
1.7 solves problems that involve comparing two quantities of different kinds (rate);
1.7.1 comparing two or more quantities of the same kind (ratio);
1.8 estimates and calculates by selecting and using operations appropriate to solving problems that involve addition of common fractions, multiplication of at least whole 2-digit by 2-digit numbers, division of at least whole 3-digit by 1-digit numbers and equal sharing with remainders;
1.8.3 addition of common fractions in context;
1.8.6 equal sharing with remainders;
1.9 performs mental calculations involving:
1.9.2 multiplication of whole numbers to at least 10 x 10;
1.12 recognises, describes and uses:, and
1.12.1 the reciprocal relationship between multiplication and division (e.g. if 5 x 3 = 15 then 15 ÷ 3 = 5 and 15 ÷ 5 = 3;
1.12.2 the equivalence of division and fractions (e.g. 1 ÷ 8 = ⅛);
1.12.3 the commutative, associative and distributive properties with whole numbers.

Memorandum

ACTIVITY 1– recognising common fractions

1. Missing numbers: …; 3; 6; 10

2. Common fractions

2.1 fifths

2.2 sixths

2.3 sevenths

2.4 eighths

2.5 ninths

2.6 tenths

TEST YOUR SKILL

  • and 1.2 Circle in half vertically; circle in half horizontally

2.1 and 2.2 Rectangle divided into thirds horizontally and vertically.

2.3 3

3.1 2; halves 3.2 3 thirds

4. Shading; one half is bigger than one third.

5. tenths; 10 equal parts; eighths; 8 equal parts

3. HANDS ON

3.1 Triangle folded in half; half coloured in.

3.2 Circle folded in quarters; three-quarters coloured in.

3.3 No

3.4 Rectangle folded into thirds; two-thirds shaded; second rectangle folded into sixths; two-sixths shaded.

3.5 Bar folded into eighths; two-eighths shaded; second bar folded into quarters; two-quarters shaded.

3.6 (a)<(b)  (c)<(d)<(e)  (f)<

ACTIVITY 2: the equivalence of division and fractions

1.1 (a) and (b)

1.2 (a) and (b)

1.3 (a) and (b)

ACTIVITY 3: problems

1.1 six biscuits; one and a half shaded

1.2 one and a half

1.3 two-eighths / one-quarter

1.4 2

1.5

1.6 2 and a quarter

  • two triangles each halved
  • half
  • quarter

Test your skills

  1. two circles each divided into fifths; two-fifths
  2. one rectangle is halved; 2 and a half
  3. a cylinder divided into thirds; one-third
  4. two-thirds
  5. one and a sixth
  6. two and two-thirds
  7. one and a seventh

8. two and an eighth

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Source:  OpenStax, Mathematics grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11101/1.1
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