(1+2+3+4+5·····+100-10-20-30)×5-199
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/23 19:25:33
(1+2+3+4+5·····+100-10-20-30)×5-199
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(99999×66+2421-399)×999
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(99999×66+2421-399)×999
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(1+2+3+4+5·····+100-10-20-30)×5-199
=【(1+100)×100÷2-60】×5-199
=【5050-60】×5-199
=4990×5-199
=24950-199
=24751
(99999×66+2421-399)×999
=(100000×66-66+2421-400+1)×999
=(6600000+1956)×199
=6601956×199
=1313789244
=【(1+100)×100÷2-60】×5-199
=【5050-60】×5-199
=4990×5-199
=24950-199
=24751
(99999×66+2421-399)×999
=(100000×66-66+2421-400+1)×999
=(6600000+1956)×199
=6601956×199
=1313789244
(1+2+3+4+5·····+100-10-20-30)×5-199
1+2-3-4+5+6-7-8+9-10·····+197+198-199-200=
(2+4+6+8+······+100)—(1+3+5+7+······+99)等于几
计算:(2+4+6+8+···+100)-(1+3+5+···+99)
1+2+3+4+5······+100+101=几
带有数字的四字词语按顺序1···2···3···4···5···6···7···8···9···10···祝福语
计算:-1+2+(-3)+4+(-5)+······+(-99)+100等于多少?
1×2+3×4+5×6+7×8······+199×200=
1-2+3-4+5-6+·····+99-100
由0·1·2·3·4·5·6·7·8·9·10开头的成语都有哪些?
(-1)×2×(-3)×···×(-49)×50×(-2的5次方) ---------- 2×4×6····×100
计算(+1)+(-2)+(+3)+(-4)+······+(-100)+(+101)+(-102)