问题
解答题
下面各题怎样简便就怎样算.
(1)125×7×8
(2)32+26+74+168
(3)48×201-48
(4)99×38+38
(5)25×44
(6)63×25+25×37.
答案
(1)125×7×8
=125×8×7
=1000×7
=7000;
(2)32+26+74+168
=32+168+(26+74)
=200+100
=300;
(3)48×201-48
=48×(201-1)
=48×200
=9600;
(4)99×38+38
=38×(99+1)
=38×100
=3800;
(5)25×44
=25×4×11
=100×11
=1100;
(6)63×25+25×37
=25×(63+27)
=25×100
=2500.