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16anelyahappy
@16anelyahappy
July 2022
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5
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Вычислите применяя переместительное и сочетательное свойства сложения найдите сумму:
1)3 1/8+7 5/12+1/12:
2) 10 2/5+ 15 5/6+3 3/5+4 1/6:
3)9 7/8+5 2/7+1 1/8+ 4 5/7:
4) 15 7/8+11 8/9+7/9+5/18:
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Answers & Comments
miki68
=1/8+(7 5/12+1/12)=1/8+8 1/2=1/8+8 4/8=8 5/8
=(10 2/5+3 3/5)+(15 5/6+4 1/6)=14+20=34
=(9 7/8+1 1/8)+(5 2/7+4 5/7)=11+10=21
=15 7/8+(11 8/9+7/9)+5/18=15 7/8+(12 2/3+5/18)=15 7/8+(12 12/18+5/18)=15 7/8+12 17/18=15 63/72+12 68/72=27 131/72=28 59/72
6 votes
Thanks 14
16anelyahappy
Спасибо большое:)
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Answers & Comments
=(10 2/5+3 3/5)+(15 5/6+4 1/6)=14+20=34
=(9 7/8+1 1/8)+(5 2/7+4 5/7)=11+10=21
=15 7/8+(11 8/9+7/9)+5/18=15 7/8+(12 2/3+5/18)=15 7/8+(12 12/18+5/18)=15 7/8+12 17/18=15 63/72+12 68/72=27 131/72=28 59/72