问题
解答题
计算:1000-81-19-82-83-17-18.
答案
1000-81-19-82-83-17-18,
=1000-(81+19)-(82+18)-(83+17),
=1000-100-100-100,
=700.
计算:1000-81-19-82-83-17-18.
1000-81-19-82-83-17-18,
=1000-(81+19)-(82+18)-(83+17),
=1000-100-100-100,
=700.