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.

多项选择题
单项选择题 A1/A2型题