328×(0.25)-147×(-0.125)+253×1/8+72×1/4的简便计算要简便得 ..

问题描述:

328×(0.25)-147×(-0.125)+253×1/8+72×1/4的简便计算
要简便得 ..

=328*1/4+147*1/8+253*1/8+72*1/4
=(328+72)*1/4+(147+253)*1/8
=400*1/4+400*1/8
=100+50
=150