49999+4999+1999+499+49+5 怎样简算? 382-98怎样简算?
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发布时间:2024-10-13 17:55
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热心网友
时间:2024-12-02 04:03
将5分解成5个1,分别与前面5个数相加
即50000+5000+2000+500+50=57550
382-98=382-100+2=282+2=284
215+357+429+581+625-(205+347+419+571+615)
=(215-205)+(357-347)+(429-419)+(581-571)+(625-615)
=10+10+10+10+10
=50
热心网友
时间:2024-12-02 04:03
49999+4999+1999+499+49+5
=50000-1+5000-1+2000-1+500-1+50-1+5
=57550
382-98
=382-100+2
=282+2
=284
215+357+429+581+625-(205+347+419+571+615)
=215-205+357-347+429-419+581-571+625-615
=10+10+10+10+10
=50
热心网友
时间:2024-12-02 04:04
49999+1+4999+1+1999+1+499+1+49+1
=50000+5000+2000+500+50
热心网友
时间:2024-12-02 04:04
49999+4999+1999+499+49+5
=50000-1+5000-1+2000-1+500-1+50-1+5
=(50000+5000+2000+500+50)-5+5
=57550
382-98
= 382 - 100 + 2
= 282 + 2
= 284
热心网友
时间:2024-12-02 04:05
49999+4999+1999+499+49+5
= (49999+1)+(4999+1)+(1999+1)+(499+1)+(49+1)
= 50000 + 5000 + 2000 + 500 + 50
= 57550
382-98
= 382 - 100 + 2
= 282 + 2
= 284
(215+357+429+581+625)-(205+347+419+571+615)
= (215-205)+(357-347)+(429-419)+(581-571)+(625-615)
= 10 + 10 + 10 + 10 + 10
= 50