3.20 Om berekenings met s.i.-eenhede te doen

Wiskunde

Meting en tyd

Inhoud

Opvoeders afdeling

Memorandum

1.

1.1 643 km ÷ 50 = 12,86 km

1.2 2 575 ℓ ÷ 125 ℓ = 20,6 = 20 vol dromme

1.3 37,5 mℓ × 275 = 10 312,5 mℓ = 10,3125 ℓ

1.4 538 900 ℓ - 98 476 ℓ = 440 424 ℓ = 440,424 kℓ

1.5 900 mℓ + 300 mℓ + 480 mℓ + 1 140 mℓ

1.6 = 2 820 mℓ = 2,820 ℓ

Leerders afdeling

Inhoud

Aktiwiteit: om berekenings met s.i.-eenhede te doen [lu 4.5]

1. Bereken die volgende sonder om ‘n sakrekenaar te gebruik. Werk mooi netjies en toon al jou bewerkings! Onthou ook die eenheid!

1.1 1,247 ℓ × 9,4 =

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1,2 836,50 ℓ ÷ 50 =

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1.3 2,143 mℓ × 50 =

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1.4 1 236,90 kℓ ÷ 0,3 =

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1.5 2,569 m × 40 = .....................

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1.6 36,90 kℓ ÷ 0,3 =

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Assessering

Leeruitkomste 4: Die leerder is in staat om gepaste meeteenhede, instrumente en formules in ‘n verskeidenheid kontekste te gebruik.

Assesseringstandaard 4.5: Dit is duidelik wanneer die leerder probleme oplos wat die kies van, berekening met en herleiding tussen geskikte S.I.-eenhede (sien hierbo) behels, terwyl geskikte kontekste vir Tegnologie en Natuurwetenskappe geïntegreer word.