问题
解答题
计算:(1)(-125
(2)(-1)10×2+(-2)3÷4. |
答案
(1)(-125
)÷(-5)5 7
=(125+
)×5 7 1 5
=125×
+1 5
×5 7 1 5
=25+1 7
=25
;1 7
(2)(-1)10×2+(-2)3÷4,
=1×2+(-8)÷4,
=2-2,
=0.
计算:(1)(-125
(2)(-1)10×2+(-2)3÷4. |
(1)(-125
)÷(-5)5 7
=(125+
)×5 7 1 5
=125×
+1 5
×5 7 1 5
=25+1 7
=25
;1 7
(2)(-1)10×2+(-2)3÷4,
=1×2+(-8)÷4,
=2-2,
=0.