(12345+23451+34512+45123+51234)÷(1+2+3+4+5)
计算(12345+23451+34512+45123+51234)/(1+2+3+4+5)脱式,简便计算,急.
12345+23451+34512+45123+51234和1*15+2*14+3*13+4*12+5*11+6*10+
弃9法不灵了吗?(12345+51234+45123+34512+23451)/3的值等于( ) A.22222 B.3
(12345+51234+45123+34512+23451)/3的值( )A.22222 B.33333 C.4444
12345加23451加34512加45123加51234的简便计算
(12345+23451+34512+45123+5123)除(1.1111+2.2222+3.3333+4.4444+
请问1÷(2÷3)÷(3÷4)÷(4÷5)÷...÷(2008÷2009)÷(2009÷2010)怎么做?
(2/3-4/5+1/2)÷(-15)
1÷3/2÷4/3÷5/4÷.÷51/50(简便计算)
1÷(2÷3)÷(3÷4)÷(4÷5)÷……÷(98÷99)÷(99÷100)需要简算,
1÷(2÷3)÷(3÷4)÷(4÷5)÷...÷(2008÷2009)÷(2009÷2010)怎么做
计算(-4)^2÷(-8)-(-1)^10 -5^3×(-5分之2)^2÷(-0.4)^3