简便计算. (1)32×(100+2) (2)72×29+72 (3)48×11 (4)325×101.
问题描述:
简便计算.
(1)32×(100+2)
(2)72×29+72
(3)48×11
(4)325×101.
答
(1)32×(100+2)
=32×100+32×2
=3200+64
=3264;
(2)72×29+72
=72×(29+1)
=72×30
=2160;
(3)48×11
=48×(10+1)
=48×10+48×1
=480+48
=528;
(4)325×101
=325×100+325×1
=32500+325
=32825.