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四年级脱式计算带答案

四年级两位数乘一位数(1) 94 * 8 = (2) 57 * 6 = (3) 9 * 67 = (4) 26 * 9 = (5) 41 * 9 = (6) 57 * 3 = (7) 7 * 79 = (8) 62 * 5 = (9) 21 * 1 = (10) 3 * 57 = (11) 5 * 84 = (12) 8 * 26 = (13) 5 * 67 = (14) 37 * 4 = (15) 8 * 98 = (16) 6 * 24 = (17) 98 * 5 = (18) 12

1、 1.25*(8+10)=1.25*8+1.25*10=10+12.5=22.52、1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.783、1/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/54、4800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=485、2/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/86、3/4-

脱式计算.408-12*24 (46+28)*60 42*50-1715÷532+105÷5 (108+47)*52 420*(327-238)(4121+2389)÷7 671*15-974 469*12+1492 405*(3213-3189) 5000-56*23 125*(97-81)6942+480÷3 304*32-154 20+80÷4-20=100÷(32-30)*0= 25*4-12*5=70

(1) 94 * 8 = (2) 57 * 6 = (3) 9 * 67 =

1、62616964757a686964616fe58685e5aeb93133336338333456+31+24=(56+24)+31=80+31=1112、615+475+125 =615+(475+125)=615+600=12153、125*64 =125*8*8=1000*8=80004、 89+101+111=101+(89+111)=101+200=3015、24+

1.3/7 * 49/9 - 4/3 2.8/9 * 15/36 + 1/27 3.12* 5/6 2/9 *3 4.8* 5/4 + 1/4 5.6÷ 3/8 3/8 ÷6 6.4/7 * 5/9 + 3/7 * 5/9 7.5/2 -( 3/2 + 4/5 ) 8.7/8 + ( 1/8 + 1/9 ) 9.9 * 5/6 + 5/6 10.3/4 * 8/9 - 1/3 11.7 * 5/49 + 3/14 12.6 *( 1/2 + 2/3 ) 13.8 * 4/5 + 8 * 11/5 14.31 *

45+240÷12 124+78+22 100-35-25 (140-70)*54 63+84*2÷42 490÷7+24*526*6-110 345+99 (46-20)*30-9025*27*4 15*7+85*7 (40-62616964757a686964616fe59b9ee7ad94313333303439384)*25125*64 2400÷80-14*2 108-(83+360÷60)(420+

1.95.6*18+0.4*18 =(95.6+0.4)*18 =96*18 =17282.907*99+907 =907*(99+1) =907*100 =907003.0.6*143-0.6*43 =0.6*(143-43) =0.6*100 =604.6.5*8+3.5*8-47 =(6.5+3.5)*8-47 =80-47 =335.14*2.25+14*3.75 =(2.25+3.75)*14 =6*14 =846.3.5*0.8+5.5

1、脱式计算,能简便运算的要用简便方法.35*4*25*3= (125-11)*8= 138*99+138= 25*88= 2、脱式计算下列各题.50*2÷4= 42-29-10= 48-30+120=36÷9*7= 27+63-30= 560÷7*3=3、计算下列各题.267-45+74 210÷35*3 125*8÷2575*5*8 643

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