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1.1 2 h 16 min = 18 h 8 min
2 h 16 min + 15 h 52 min = 17 h 68 min
1.2 15 h - 8 h 27 min = 6 h 33 min
15 h 00 min - 8 h 27 min = 6 h 33 min
1.3 8 h 6 min - 2 h 45 min = 5 h 21 min
8 h 06 min – 2 h 45 min = 5 h 21 min
1.4 12 × 3 h 48 min = 45 h 36 min
12 × 3 h 48 min = 36 h 576 min
1.5 4 h 30 min ÷ 15 min = 18
270 min ÷ 15 min
2.1 16 h 10 min – 10 h 00 min = 6 h 10 min
6 h 10 min – 50 min = 5 h 20 min
a) 1 h 30 min
b) 35 min
c) 6 h 5 min
d) 4 h
Ons gaan ook sommer kyk of jy nog kan onthou hoe om met tyd op te tel en af te trek!
1. Bereken die volgende:
1.1 2 h 16 min + 15 h 52 min = ___________h___________min
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1.2 15 h – 8 h 27 min = ___________h___________min
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1.3 8 h 6 min – 2 h 45 min = ___________h___________min
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1.4 12 × 3 h 48 min = ___________h___________min
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1.5 4 h 30 min ÷ 15 min = _________________________
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2. Skryf duidelike getalsinne met die oplossing van die volgende probleme:
2.1 ’n Krieketwedstryd het om 10:00 begin en om 16:10 klaargemaak. Hoeveel tyd is aan die spel afgestaan, indien daar twee 10 minute-ruskanse en ’n middagete van 30 minute was?
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2.2 Hier volg Gerda se klasrooster vir Maandae.
a) Hoeveel tyd word aan Engels afgestaan?_________________________________
b) Hoe lank is die pouses saam?____________________________________
c) Hoe lank is die skooldag?________________________________________
d) Indien sy nege Afrikaanse periodes per week het, hoeveel uur is dit? _____________________________________________________________________
Leeruitkomste 4: Die leerder is in staat om gepaste meeteenhede, instrumente en formules in ‘n verskeidenheid kontekste te gebruik.
Assesseringstandaard 4.2: Dit is duidelik wanneer die leerder probleme oplos wat berekeninge met en herleiding tussen geskikte tydeenhede behels, insluitend tydsones en –verskille.
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