问题
解答题
用你喜欢的方法计算.
(1050-210)÷(210÷5)
275+828÷36×50
630×[880÷(250-239)]
[356+(1906-1275)]+47.
答案
(1)(1050-210)÷(210÷5),
=840÷42,
=20;
(2)275+828÷36×50,
=275+23×50,
=275+1150,
=1425;
(3)630×[880÷(250-239)],
=630×[880÷11],
=630×80,
=50400;
(4)[356+(1906-1275)]+47,
=[356+631]+47,
=987+47,
=1034.