арифметик дундаж 5,1
TRANSCRIPT
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Ñàéí áàéöãààíà óó? Õ¿¿õä¿¿ä ýý
Ýíý ºäðèéí ìýíäèéã õ¿ðãýå!
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Ñýäýâ: Àðèôìåòèê äóíäàæ
Çîðèëãî Òîîíóóäûí àðèôìåòèê äóíäàæèéã îëæ ÷àääàã áîëîõ
Ýçýìøñýí ìýäëýãýý àìüäðàëä õýðýãëýý áîëãîõ
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Áîäëîãî áîäîöãîî¸
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38,5êã; 26,1êã; 14,6êã æèíòýé ãóðâàí õýñýã ÷èõðèéã ãóðâàí õàéðö-ãàíä òýíö¿¿ õýìæýýòýé õèéõ áàéâ. Õàéðöàã á¿ðä õýäýí êã ÷èõýð îðîõ âý?
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Çóðàãëàë:
38,5êã 26,1êã
14,6êã
? ? ?
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Áîäîëò
1. Íèéò ÷èõðèéí õýìæýýã îëú¸?
38,5êã+26,1êã+14,6êã=79,2êã
2. Õàéðöàã á¿ðä õýäýí êã ÷èõýð õèéõ âý?
79,2êã:3=26,4êã /÷èõýð/
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26,4 íü 38,5; 26,1; 14,6 ãýñýí òîîíóóäûí àðèôìåòèê äóíäàæ
þì.
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Ä¿ãíýëò ãàðãàöãààÿ
Õýä õýäýí òîîíû íèéëáýðèéã òýäãýýðèéí òîîíä õóâààñíûã òýäãýýð
òîîíóóäûí àðèôìåòèê äóíäàæ ãýíý.
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Áîäëîãî
Íýã íü íºãººãººñºº 3,5-ààð èõ áàéõ 2 òîîíû àðèôìåòèê äóíäàæ 35,6 áîë óã õî¸ð òîîã îë.
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Èõ òîî \—————\—3,5—\ ?
? Áàãà òîî \—————\ ?
Àðèôìåòèê äóíäàæ íü 35,6
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Áîäîëò:
1. Óã 2 òîîíû íèéëáýðèéã îëú¸? 35,6*2=71,2 2. 2 òýíö¿¿ òîîíû íèéëáýð õýä âý? 71,2-3,5=67,7 3. Áàãà òîîã îëú¸? 67,7:2=33,85 / áàãà òîî /
4. Èõ òîîã îëú¸? 33,85+3,5=37,35 / èõ òîî /
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Øàëãàÿ:
1. 2 òîîíû íèéëáýð õýä âý? 37,35+33,85=71,2 2. Èõ òîî íü áàãà òîîíîîñîî õýäýýð èõ âý? 37,35-33,85=3,5 3. 2 òîîíû íèéëáýðèéí àðèôìåòèê
äóíäàæèéã îëú¸? 71,2:2=35,6
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Ǻâ áàéíà
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Áèå äààæ áîäîîðîé
Ñóðàõ áè÷ãèéí
¹ 246
¹ 245
¹244
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Õè÷ýýëä èäýâõòýé îðîëöñîíä áàÿðëàëàà.