简便计算五年级30道
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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?
脱式计算(能简算要简算)6/7+2/15+1/7+13/1519/21+5/7-3/142/3+5/9-2/3+5/98/9+(1/4-1/9)+3/40.58+5/13+1.12+8/1311-4/
题在哪里?
1.=0.65×7.08=4.6022.=5.36+23.2=28.563.=(3.9×80)÷(1.25×80)=312÷100=3.12
9-2x=14+5x=910-x=88x+9=179+6x=14x+9x=4+72x+9=178-4x=66x-7=127x-9=8x-56=18-7x=1x-30=126x-21=216x-3=69
1.5.06*60+4.94*602.62.5*1000-61.5*10003.98.54*99+98.544.9.3*10-9.3*95.0.25*4+1.25*0.8我就上五年级,这些绝对是五年级
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
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
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)
http://wenwen.soso.com/z/q117383873.htm
2012-2-1112:09水晶城的孩子|二级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.
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