4×(1/12+3/16)-3/4 7/5-5/8-9/16÷3/2 55×55/56 24×(1/4+1/6-1/3)
简便计算:1/55+2/55+3/55+4/55+5/55+6/55+7/55+8/55+9/55+10/55-11/1
(1+2+3+4+5+6+7+8+9+10)÷55=?
1*2*3*4*5*6*7*8*9*12*23*34*55*56*67*78*90
(32*1/4+17)÷5/12 (25+3/4)÷1/4+1/4 18/25×9/16+7/25*9/16+9/16
能简算要简算3/5÷1/4÷6÷14/1523/25÷(3/4÷2/5)15/16÷(5/12÷5/8+3/8)
8/9×[3/4÷(7/16-1/4)]
观察:1+2+3+4+5+6+7+8+9+10=(1+10)*(10÷2 )=11*5=55
15/16÷(5/12÷5/8+3/8) 6/7-6/7×(2/3+1/9) 【1-(1-2/3÷
36÷9分之4×3分之1 3分之1÷6分之5×16分之15 1分之4×7分之17÷49分之8 (3分之2+4分之3)÷1
简算(1)20-1/4×2/5 5/6 (2) (7/16 4/5)÷3/5 (3
1+2+3+4+5+6+7+8+9+8+7+4+56+1+2+3
1+2+3+4+5+6+7+8+9+10+12+14+16+18+20=?