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Wiskunde

Getalbegrip, optelling en aftrekking

Optelling

Opvoeders afdeling

Memorandum

1.1 830

1.2 14

1.3 12

1.4 99

1.5 27

1.6 12 en ‘n half

1.7 84

1.8 185

1.9 196

1.10 64

1.11 29 en ‘n half

1.12 5

1.13 7

1.14 158

1.15 60

1.16 7

1.17 8

1.18 80

1.19 0

1.20 170

Leerders afdeling

Inhoud

Aktiwiteit: om hoofreken te kan doen [lu 1.9]

  • In hierdie aktiwiteit is dit nou eers weer tyd vir JOU om flink te dink en jou hoofrekenvaardighede te probeer verbeter. Kyk of jy die antwoorde van die hoofrekentoets binne drie minute korrek kan neerskryf.

a) 550 + 280 = ____________

b) 18 + ____________ = 32

c) 28 + ____________ = 40

d) 105 – 6 = ____________

e) 3 × 3 × 3 = ____________

f) Helfte van 25 = ____________

g) ____________ ÷ 12 = 7

h) 193 – 8 = ____________

i) 203 – 7 = ____________

j) Halveer 128: ____________

k) Halveer 59: ____________

l) 20 ÷ ____________ = 4

m) 63 ÷ ____________ = 9

n) Verdubbel 79: ____________

o) (6 × 9) + 6 = ____________

p) (7 × 8) + . ____________ = 63

q) (____________ × 5) + 9 = 49

r) 2 × 20 × 2 = ____________

s) ____________ × 12 + 12 = 12

t) Verdubbel 85: ____________

HOE HET JY GEVAAR?
MERK DIE TOEPASLIKE BLOKKIE:
Ek het verbeter op my vorige hoofrekentoets.
My punte het dieselfde gebly.
My vorige hoofrekentoets se punte was beter.

.

Assessering

Leeruitkomste 1: Die leerder is in staat om getalle en die verwantskappe daarvan te herken, te beskryf en voor te stel, en om tydens probleemoplossing bevoeg en met selfvertroue te tel, te skat, te bereken en te kontroleer.

Assesseringstandaard 1.9: Dit is duidelik wanneer die leerder hoofberekeninge uitvoer wat die volgende behels:

1.9.1 optelling en aftrekking;

1.9.2 vermenigvuldiging van heelgetalle tot minstens 10 × 10.

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Source:  OpenStax, Wiskunde graad 5. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10993/1.1
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