在○里填运算符号,在□中填数.
(1)465-199??
=465-200○□
=□○□
=□
?????????????
(2)99×33
=(100○□)×33
=100×33○□×33
=□
(3)125×56
=125×(□×□)
=125×□×□
=□
??????????????????
(4)3000÷4÷25
=3000÷(□○□)
=3000÷□
=□
网友回答
解:(1)465-199???
=465-200+1
=265+1,
=266;
(2)99×33
=(100-1)×33,
=100×33-1×33,
=3277;
(3)125×56?
=125×(8×7)
=125×8×7,
=7000;
?(4)3000÷4÷25
=3000÷(4×25),
=3000÷100,
=30.
故