简便计算五年级30道要答案
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/10 15:49:40
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
五年级数学小数加减法简便计算a+b=b+aa+b+c=a+(b+c)a-b-c=a-(b+c)5.93+0.19+2.813.07-0.38-1.627.3+2.7-7.3+2.71.27+3.9+0
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
(1)2.5*32*0.125=(2.5*4)*(8*0.125)=10*1=10(2)3.5-7+6.5=3.5+6.5-7=3(3)1.2×2.5+0.8×2.5=2.5(1.2+0.8)=25(
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
*是乘号/是除号0.3*2.5*0.450*0.13*0.20.8*630*0.1250.78*1011.5*1029.8*251.2*2.5+0.8*2.51.25*0.7*0.80.038*5*2
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
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*
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.
12×23=13×26=
[(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