(9999+9997+.+9001)-(1+3+.+999)
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(9999+9997+.+9001)-(1+3+.+999)
(9999+9997+.+9001)-(1+3+.+999=
(9999+9997+.+9001)-(1+3+.+999)=?
(9999+9997+…+9001)-(1+3+…999)简算等于多少写出过程.
(9999+9997+...+9001)-(1+3+...+999)怎么计算?
(9999+9997+.+9001)-(1+3+.+999)如题
(9999+9997+···+9001)—(1+3+5+····+999)=?
计算下列算式:1.(9999+9997+.9001)-(1+3+.999) 2.765*213/27+765*327/27还有一个:999*370-19.99*6+1999*0.39
(9999-9998-9997-9996-9995)×(9999+9998+9997+9996+9995)
9999+9998+9997+9996简算
9999×9998-9998×9997-9997×9996+9996×9995简便计算
9999×9998-9998×9997-9997×9996+9996×9995简便计算,
1.765×213÷27+765×327÷27 2.(9999+9997+…+9001)-(1+3+…+999) 3.19981999×19991998-19981
1.49+499+4999+49999+499999;2.(1+11+21+31+41)+(9+19+29+39+49)1.49+499+4999+49999+499999; 2.(1+11+21+31+41)+(9+19+29+39+49) 3.(9999+9997+1995+……+9001)-(1+3+5+……+999 ) 4.123+234+345+456+5657+678+789 5.1400÷25÷
9999+9998+9997+9996的简便算法
简便计算,难难难难难难难难难难!10234+9999+9998+9997
1.49+499+4999+49999+49991.49+499+4999+49999+499999; 2.(1+11+21+31+41)+(9+19+29+39+49) 3.(9999+9997+1995+……+9001)-(1+3+5+……+999 ) 4.123+234+345+456+5657+678+789 5.1400÷25÷8+350÷4÷125 6.9÷13+13÷9+11÷13+14÷9+6÷136.
数学题在线解答9999*9998-9998*9997-9997*9996+9996*9995