用简便方法计算. (25×125)×(8×4) 27×45+27×55 13×102
发布网友
发布时间:2024-09-25 18:08
我来回答
共1个回答
热心网友
时间:2024-10-04 23:21
(1)(25×125)×(8×4),
=(25×4)×(8×125),
=100×1000,
=100000;
(2)27×45+27×55,
=27×(45+55),
=27×100,
=2700;
(3)13×102,
=13×100+13×2,
=1300+26,
=1326.
热心网友
时间:2024-10-04 23:16
(1)(25×125)×(8×4),
=(25×4)×(8×125),
=100×1000,
=100000;
(2)27×45+27×55,
=27×(45+55),
=27×100,
=2700;
(3)13×102,
=13×100+13×2,
=1300+26,
=1326.