计算
(1)÷×
(2)(+)÷
(3)×+÷4
(4)1836÷[56×(-)]
(5)50.7÷[(-)×24]
(6)有一种数学运算符号*,使下列等式成立:2*4=12,5*3=18,9*7=70.请计算8*8.
网友回答
解:(1)1)÷×,
=××,
=,
(2)(+)÷,
=,
=×,
=,
(3)×+÷4,
=×+×,
=×(+),
=×,
=,
(4)1836÷[56×(-)],
=1836÷[56×-56×],
=1836÷18,
=102,
(5)50.7÷[(-)×24],
=50.7÷[×24-×24],
=50.7÷14,
=,
(6)2*4=12=2×4+4,5*3=18=5×3+3,9*7=70=9×7+7.
所以8*8=8×8+8=72,
故