78乘20加22乘20的简便-搜答案-神马作文网

33333×44444+22222×33334=33333×2×22222+22222×33334=66666×22222+22222×33334=22222×(66666+33334)=22222×

（11+20+37）x1/17+（19+38）x1/19再答：答案=4+3=7

是44.4488.88×777.78+44.44×222.22+177.76×55.555=88.88×777.78+88.88×111.11+88.88×111.11=88.88×（777.78+1

9.13×0.2+91.3×0.08=9.13×0.2+9.13×0.8=9.13╳（0.2+0.8）=9.13

36×56+72×22=36×2×28﹢36×2×22=36×2×﹙28+22）=36×2×50=3600

8.88×9+28×1.11＝1.11×8×9+28×1.11＝1.11×（72+28）＝1.11×100＝111

（10-0.4）X2835＝28350－1134＝272162.85X4＝11.4结果＝27237.4

5.6×8.8+0.56×12=5.6×8.8+5.6×1.2=5.6×(8.8+1.2)=5.6×10=56

17*8*20*125=17*(8*125)*20=17*1000*20=17000*20=340000

=4.56*67+4.56*31+4.56*2=4.56*(67+31+2)=4.56*100=456

24*71+24*56=(71+56)*24=3048

222×156+211×888=222×156+211×4×222=222×（156+211×4）=222×（156+844）=222×1000=222000

20乘59分之58加58乘59分之23加32乘59分之29=20x58/59+23x58/59+16x58/59=58/59x(20+23+16)=58/59x59=58

24×78＋12×44＝24×78＋12×（2×22）＝24×78＋24×22＝24×（78＋22）＝24×100＝2400

(3.14X30)2+188.4X15+3.14X5X2X20=8873.64+2826+628=12291.64

78*65+78*33+78+78=78*65+78*33+78*1+78*1运用乘法分配律=78*（65+33+1+1）=78*100=7800

1/4*2003+2005*25+2004*1/4=1/4*(2003+2005+2004)=1/4*6012=15033375÷27x12=125x12=125x4x3=15006.6+0.6x20

26*20*5*3=26*3*100=780

20%=0.21.65÷5+1.29×0.2+3/50×0.2=1.65×0.2+1.29×0.2+0.06×0.2=（1.65+1.29+0.06）×0.2=3×0.2=0.6