《十道脱式计算题简变算法》由会员分享，可在线阅读，更多相关《十道脱式计算题简变算法（5页珍藏版）》请在装配图网上搜索。
1、十道脱式计算题简变算法1.0.4x125x25x0.8= ( 0.4x25 )x( 125x0.8 ) =10x100=10002.1.25x( 8+10 ) =1.25x8+1.25x10=10+12.5=22.53.9123- ( 123+8.8 ) =9123-123-8.8=9000-8.8=8991.24.1.24x8.3+8.3x1.76=8.3x( 1.24+1.76 ) =8.3x3=24.9 5.9999x1001=9999x( 1000+1 )=9999x1000+9999x1=100089996.14.8x6.3-6.3x6.5 + 8.3x37=(14.8-6.5 )x
2、6.3 + 8.3x3.7=8.3x6.3+8.3x3.7=8.3x(6.3 + 3.7)=8.3x107.1.24+0.78+8.76=(1.24+8.76 ) +0.78= 10+0.78= 10.788.933-157-43=933- ( 157+43 ) =933-200=7339.4821-998=4821-1000+22=382310.32x125x25=4x8x125x25=(4x25)x(8x125)=100x1000= 100000 9048-26=(2600+2600+2600+1248 )-26=2600-26+2600-26+2600-26+1248-26=100+10
3、0+100+48=34811.2881-43=(1290+1591)-43=1290-43+1591-43=30+37=67 3.2x42.3x3.75-12.5x0.423x16=3.2x42.3x3.75-1.25x42.3x1.6=42.3x(3.2x3.75-1.25x1.6)=42.3x(4x0.8x3.75-1.25x4x0.4)=42.3x(4x0.4x2x3.75-1.25x4x0.4)=42.3x(4x0.4x7.5-1.25x4x0.4)=42.3x4x0.4x(7.5-1.25)=42.3x4x0.4x6.25=42.3x(4x2.5)=42312.1.8+18-1.5-
4、0.5x0.3 = 1.8+12-0.15 = 13.8-0.15 = 13.651365x8+3.5x8-47=52+28-47=80-47=33(80-9.8)x5 分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.7614.8x7 分之 4-1-(3.2-2.95)=8x4/7-1-0.25=8x4/7-4=8/715.2700x( 506 - 499 )-900=2700x7-900=18900-900=2116.33.02 - ( 148.4 - 90.85 )-2.5 = 33.02 - 57.55-2.3=33.02 - 23.02 = 1017. (1-
5、1-1)-5.1= (1-1)-5.1=0-5.1=018.18.1 +( 3 - 0.299-0.23 )x1=18.1 + 1.7x1=18.1 + 1.7=19.819.9000- 72x(1.25x0.7x8)=9000-72x7=125x7=87520.61- (1.25+2.5x0.7)=61-3 = 5821.(10-0.8)+9.85卜2-0.125 = 19.05-2-0.125 = 19.05-16=13.0522.5.4-1.8+240x1.5 = 3 + 360=36323.9000- 72x(1.25x0.7x8 ) =9000-72x7=125x7=87524.61
6、- (1.25+2.5x0.7)=61-3 = 5825.(10-0.8)+9.85卜2-0.125 = 19.05-2-0.125 = 19.05-16=3.0526.408 - 12x24=408-288=12027. (46 + 28)x60=74 x 60=444028.42x50 - 17=2100-17=208329.32 + 1055 = 32+21=5330.420x( 327 - 238 ) =420 x 89=3738031.(4121+2389)-7=6510-7=93032.3.416-( 0.016x35 ) =3.416-0.56=6.133.0.8x(10 - 6
7、.76)-1.2=0.8 x(3.24-1.2)=0.8 x 2.7=2.1634.5.67x0.2-0.62 = 1.134-0.62=0.51435.0.4x0.7x0.25=0.4 x 0.2 5 x 0.7=0.1 x 0.7=0.0736.0.78+5.436+1=6.216+1=7.21637.30.8-14 - (9.85 +1.07)=30.8-(14-10.92)=30.8-3.08=1038.60 - (9.5 + 28.9)-0.18=(60-38.4)-0.18=21.6-0.18=120392881-0.43 - 0.24x3.5=6.7-0.24 x3.5=6.7-0.84=5.86
十道脱式计算题简变算法
