脫式計(jì)(jì)算題20個(gè)(gè)
閆版19696435785咨詢： 脫式計(jì)算下面各題.(1)2700*(506 - 499)÷300(2)33.02 - (148.4 - 90.85)÷2.5(3)(1÷1 - 1) -
鞏留縣心直動(dòng)回復(fù)：
______ (1)2700*(506-499)÷300,=2700*7÷300,=2700÷300*7,=9*7,=63;(2)33.02-(148.4-90.85)÷2.5,=33.02-57.55÷2.5,=33.02-23.02,=10;(3)(1÷1-1)÷2013,=(1-1)÷2013,=0;(4)18.1+(3-0.299÷0.23)*100,=18.1+(3-1.3)*100,=18.1+1.7*100,=18.1+170,=188.1.
閆版19696435785咨詢： 脫式計(jì)算 0.25*7.6+2.5*0.24脫式計(jì)算過(guò)程 -
鞏留縣心直動(dòng)回復(fù)：
______ 0.25*7.6+2.5*0.24脫式計(jì)算過(guò)程 0.25*7.6+2.5*0.24 =0.25*7.6+0.25*2.4 =0.25*(7.6+2.4) =0.25*10 =2.5
閆版19696435785咨詢： 脫式計(jì)算 368÷4*7 913 - 130*6 7*(270 - 180) 72÷9*125 -
鞏留縣心直動(dòng)回復(fù)：
______ (1)368÷4*7,=92*7,=644;(2)913-130*6,=913-780,=133;(3)7*(270-180),=7*90,=630;(4)72÷9*125,=8*125,=1000.
閆版19696435785咨詢： 脫式計(jì)算. 6760÷13+17*25 4.82 - 5.2÷0.8*0.6 35÷ 7 8 *(1 - 3 8 ) -
鞏留縣心直動(dòng)回復(fù)：
______ (1)6760÷13+17*25,=520+425,=945;(2)4.82-5.2÷0.8*0.6,=4.82-3.9,=0.92;(3)35÷ 7 8 *(1- 3 8 ),=35* 8 7 * 5 8 ,=25;(4) 9 5 ÷[( 1 2 - 1 3 )* 4 15 ],= 9 5 ÷[ 1 6 * 4 15 ],= 9 5 ÷ 2 45 ,= 9 5 * 45 2 ,= 81 2 .
閆版19696435785咨詢： 脫式計(jì)算下面各題①27÷3+48÷6②12*4 - 8*3③52*6 - 24÷8 -
鞏留縣心直動(dòng)回復(fù)：
______ ①27÷3+48÷6=9+8=17;②12*4-8*3=48-24=24;③52*6-24÷8=312-3=309.
閆版19696435785咨詢： 脫式計(jì)算.82 - 44+75 26*4+125÷5 176 - 3*(15+20 -
鞏留縣心直動(dòng)回復(fù)：
______ (1)82-44+75,=38+75,=113;(2)26*4+125÷5,=104+25,=129;(3)176-3*(15+20),=176-3*35,=176-105,=71.
閆版19696435785咨詢： 346+102(脫式計(jì)算)(簡(jiǎn)便運(yùn)算) 105+418(脫式計(jì)算)(簡(jiǎn)便運(yùn)算) 234+301(脫 -
鞏留縣心直動(dòng)回復(fù)：
______ 346+102(脫式計(jì)算)(簡(jiǎn)便運(yùn)算)=346+100+2=446+2=448105+418(脫式計(jì)算)(簡(jiǎn)便運(yùn)算)=100+418+5=518+5=523234+301(脫式計(jì)算)(簡(jiǎn)便運(yùn)算)=234+300+1=534+1=535
閆版19696435785咨詢： 脫式計(jì)算 (75+240)÷(20 - 5)42+6*12 - 4(75+360)÷(20 - 5)40*(330 - 180)÷2528+(32÷4 - 3)(68+3 -
鞏留縣心直動(dòng)回復(fù)：
______ (1)(75+240)÷(20-5)=315÷15=21 (2)42+6*12-4=42+72-4=114-4=110 (3)(75+360)÷(20-5)=435÷15=29 (4)40*(330-180)÷25=40*150÷25=6000÷25=240 (5)28+(32÷4-3)=28+(8-3)=28+5=33 (6)(68+32)*(96÷12)=100*8=800.
閆版19696435785咨詢： 脫式計(jì)算.0.2*0.6*0.5*4 (7.5 - ... -
鞏留縣心直動(dòng)回復(fù)：
______ (1)0.2*0.6*0.5*4 =(0.2*0.6)*(0.5*4) =0.12*2 =0.24; (2)(7.5-2.3*0.4)÷0.01 =(7.5-0.92)÷0.01 =6.58÷0.01 =658; (3)3.64÷5.2*23.8 =0.7*23.8 =16.66; (4)178.8÷(26.4-5.6) =178.8÷20.8 = 447 52 .
閆版19696435785咨詢： 脫式計(jì)算6.3÷(5.2 -
鞏留縣心直動(dòng)回復(fù)：
______ (1)6.3÷(5.25*0.8) =6.3÷4.2 =1.5; (2)20÷0.8-4÷0.8 =25-5 =20; (3)92.5*0.25*4 =92.5*(0.25*4) =92.5*1 =92.5; (4)6.7*0.9+6.7*0.1 =6.7*(0.9+0.1) =6.7*1 =6.7.
