‘壹’ 用简便方法计算。0.75*102
‘贰’ 76×102用简便方法计算
用76乘以100等于7600,再用7600加上76加76等于7752
‘叁’ 75X102的简便计算
=75×(100+2)
‘肆’ 用简便方法计算75+98+102
75+98+102
=75+(98+102)
=75+200
=275
‘伍’ 75✘102-150的简便运算方法
原式
=75×102-75×2
=75×(102一2)
=75×100
=7500
‘陆’ 简便计算
75×102
=75*(100+2)
=75*100+75*2
=7500+150
=7650
1.2×2.5
=(1+0.2)*2.5
=1*2.5+0.2*2.5
=2.5+0.5
=3
90.1-9.9
=(90+0.1)-(10-0.1)
=90+0.1-10+0.1
=80+0.2
=80.2
90.1×9.9
=(90+0.1)*(10-0.1)
=900-9+1-0.01
=908-0.01
=907.99
3.54×99+3.54
=3.54*99+3.54*1
=3.54*(99+1)
=3.54*100
=354
272÷125
=272*8/125*8
=2176/1000
=2.176
201+202+203+204+•••+1000
=(201+1000)+(202+999)+。。。。+(600+601)
=400个1201相加
=400*1201
=480400
‘柒’ 用简便方法计算75X102一75x2
75X102一75x2
=75x(102-2)
=75x100
=7500
利用乘法结合的规则。
‘捌’ 75×102的简便运算
=75X(2十100)
=75X2十75x100
=150十7500
=765O
‘玖’ O.75×102怎样用简便方法
简便计算过程方法如下
解:0.75×102
=0.75×(100+2)
=0.75×100+2×0.75
=75+1.5
=76.5
‘拾’ 0.75x102怎样用简便方法计算呢
0.75x102
=0.75(100+2)
=0.75x100+0.75x2
=75+1.5
=76.5