简便计算五年级加答案
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下面各题怎样算简便就怎样算.6.9+4.8+3.10.456+6.22+3.7815.89+(6.75-5.89)4.02+5.4+0.985.17-1.8-3.213.75-(3.75+6.48)3
67.5÷0.125+32.5×8=67.5*8+32.5*8=(67.5+32.5)*8=100*8=80075.43÷0.01-25.43×100=75.43*100-25.43*100=(75.
题呢?
题在哪里?
43.2再问:求过程再答:50x0.8+4x0.8等于40+3.2等于43.2再问:哎呀,是58.9再答:?再答:你问下你爸妈是不是这个答案,算数不过关?再问:54.9×0.38再问:懂吗再问:你给我
3.29+0.73+2.273.29-0.73-2.277.5+2.5-7.5+2.57.325-3.29-3.3257.325-(5.325+1.7)7.325-(5.325-1.7)3.29+0.
一会上手写图稍等
16.8除以0.8=5x16.8÷4=5x4.2=21
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6,望采纳
五年级数学简便计算练习卷下面各题怎样算简便就怎样算.6.9+4.8+3.10.456+6.22+3.7815.89+(6.75-5.89)4.02+5.4+0.985.17-1.8-3.213.75-
五年级数学简便计算题下面各题怎样算简便就怎样算.6.9+4.8+3.10.456+6.22+3.7815.89+(6.75-5.89)4.02+5.4+0.985.17-1.8-3.213.75-(3
(13+22)*15-(91/13)=35*15-7=525-7=518
解题思路:主要应用加法交换律和结合律,及减法的性质简算。解题过程:1.5/2-(3/2+4/5)2.7/8+(1/8+1/9)3.5/6+(1/2+2/3)4.9/7-(2/7-10/21)5.3/7
1.3/7×49/9-4/32.8/9×15/36+1/273.12×5/6–2/9×34.8×5/4+1/45.6÷3/8–3/8÷66.4/7×5/9+3/7×5/97.5/2-(3/2+4/5)
一1)25%*132+1/4*82)32*0.125*25=1/4*132+1/4*8=(4+8)*0.125*25=1/4*(132+8)=(4*25)*(8*0.125)=1/4*140=100*
http://wenwen.soso.com/z/q117383873.htm
66666667*66666667=(70000000-3)*(70000000-3)=(70000000-3)^2=70000000^2-2*70000000*3+3^2=4900000000000
[(2.5*4)+(2.5*0.4)]*0.7=(10+1)*0.7=7.7---4与2.5相乘可以凑整6.3*10+6.3*0.3=63+1.89=64.89---把接近整数的数拆成一个比较整的数加