选择合适的方法计算。
|
(1)原式= - + +![]() = + +![]() =1 ![]() | (2)原式= + + -![]() = -![]() = ![]() |
(3)原式= -![]() = ![]() | (4)原式= + -( + )= -![]() = ![]() |
(5)原式=1- - - - - - - -![]() = - - - - - - -![]() = - - - - - -![]() = - - - - -![]() =…… = |
编辑:chaxungu时间:2026-04-27 14:03:47分类:小学数学题库
选择合适的方法计算。
|
(1)原式= - + +![]() = + +![]() =1 ![]() | (2)原式= + + -![]() = -![]() = ![]() |
(3)原式= -![]() = ![]() | (4)原式= + -( + )= -![]() = ![]() |
(5)原式=1- - - - - - - -![]() = - - - - - - -![]() = - - - - - -![]() = - - - - -![]() =…… = |