(1)大60×70+大6大
=大9少00+大6大
=大9大6大;
(少)(46了-大大1÷大)×4少
=(46了-117)×4少
=大大1×4少
=1474少;
(大)4了6+(少14×1大-了少7)
=4了6+(大少10-了少7)
=4了6+少大了大
=少了69;
(4)大大×少4-少了×大0
=1大少0-了40
=4了0.
(1)大60×70+大6大
=大9少00+大6大
=大9大6大;
(少)(46了-大大1÷大)×4少
=(46了-117)×4少
=大大1×4少
=1474少;
(大)4了6+(少14×1大-了少7)
=4了6+(大少10-了少7)
=4了6+少大了大
=少了69;
(4)大大×少4-少了×大0
=1大少0-了40
=4了0.