(1/2-2/3+5/6-3/4)×(-12) (-8)×(-81/20)×1.25×(-0.1)
计算:1.25*(88+6/15)*8+8*3/5*(1+1/4)-125%*(78+2/3)*8
(1/3/12+2/6/24+3/9/36+4/12/48)/(2/3/5+4/6/10+6/9/15+8/12/20)
能简算的要简算 (1)8/75÷4/25+6/25×5/12 (2)20-1/4×2/5 (3)5/6×(7/10+4/
(1×2×3+2×4×6+4×8×12+7×14×21)÷(1×3×5+2×6×10+4×12×20+7×21×35)
求不定积分 (1) (2) (3) (4) (5) (6) (7) ; (8) (9) (10) (11) (12)
-2/3+(-1/6)-(-1/4)-1/2=?(-7.8)×1.25×(-8)=?
下列表达式的值(数值或逻辑值) (1)13*6*8 Div 3 (2)5/4*2.5/1.25*(4+6) (3)24
简算(8/15+9/20*2/3)÷1/12 (0.4+2/3)/(5/6-0.75)*0.5 方程 1/4x+3/4x
化简 (初二数学题)(!)√5×√20分之9(2)8分之√12×√6 (3)(1+√3)(2-√3)(4)(2√3-1)
计算题:(1)(-12)+(+12)-(-6) (2)【(-5)-(+9)】-(-4) (3)8
算24点:(1)1 5 9 12 (2)1 6 10 13 (3)2 4 8 11(4)3 5 12 12
1.(-2 3/4)+(+12 5/7)+(-4.125)+(+0.75)+(+1/8);