(2/3-1/12-1/15)×(-60)计算结果与过程?
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(2/3-1/12-1/15)×(-60)计算结果与过程?
(2/3-1/12-1/15)×(-60)计算结果与过程?
(2/3-1/12-1/15)×(-60)计算结果与过程?
(2/3-1/12-1/15)×(-60) 原式=(2/3×-60)-(1/12×-60)-(1/15×-60) =-40+5+4 =-31
(3/1-15/1+12/1)乘60
(2/3-1/12-1/15)÷(-1/60)=?
(2/3-1/12-1/15)×(-60)计算结果与过程?
(2/3-1/12-1/15)X(-60)
(3分之2-12分之1-15分之4)×(-60)=
简便方法(1)(1/3-1/15+1/12)*60 (2)(2/9*13-2/9)/ 1/3
计算1.(-1/30)/(1/3-1/5-1/10+1/15)2.(3/5-1/2-7/12)×(60×3/7-60×1/7+60×5/7)
初一有理数计算 【紧急】(1)-2³-(1-0.5)*1/3*[2-(-3)²](2)(2/3-1/12-4/15)*(-60)(3)-3.5/7/8*(-8/7)*|-3/64|----------------------------------------------------------------------------------------------------
简算:(1+1/3+1/5+1/10+1/15+1/30)÷(1/2+1/4+1/6+1/12+1/20+1/60)=? 要过程!
(1+1/3+1/5+1/10+1/15+1/30)÷(1/2+1/4+1/6+1/12+1/20+1/60)一定要是简便运算!
一件工作.甲队做2天,乙队做5天,共完成4/15;甲5天,乙2天,共完成19/60,问甲、乙两队单独做各需要多少(19/60-4/15)÷3 = 1/60 (19/60+4/15)÷7=1/12 (1/12+1/60)÷2 = 1/20 (1/12-1/60)÷2 = 1/30 甲
3×(2/15+1/12)-2/5,能简算吗
60×(3分之一—15分之1+12分之1)
(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)(用简算)
(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)=?简便计算方法
(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)=?简算
(1/2+1/4+1/6+1/10+1/12+1/60)/(1+1/3+1/5+1/10+1/15+1/30)
3×(15分之2+12分之1) 简便