小学六年级数学加减乘除混合运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/21 01:59:45
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)
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)
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)
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)
设全长a千米,则228+5/8a-7=4/5a解得a=120
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)
我百度了一下再问:那里的有些简单了,我只挑了一点点,一共五百题呢,不够的,想要稍难一点的
方法一:80÷(80÷15+80÷40)=80÷(16/3+2)=80÷22/3=120/11小时方法二:1÷(1÷15+1÷40)=1÷(1/15+1/40)=1÷11/120=120/11小时
60+7/35+35×60.09-9.35=215460+7/35+35×60.29-29.35=214160+7/35+35×60.49-49.35=212860+7/35+35×60.69-69.
有小括号时,先算括号里的,然后算乘、除,最后算加、减没有小括号时,先算算乘、除,后算加、减只有加减或乘除时,按顺序计算
在没有括号的算式里,如果既有乘除法又有加减法,要先算乘除法,再算加减法;如果只有乘除法或只有加减法,要从左往右依次运算.如果有括号,要先算括号里面的.
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你好!够了吧!1.125*3+125*5+25*3+252.9999*3+101*11*(101-92)3.(23/4-3/4)*(3*6+2)4.3/7×49/9-4/35.8/9×15/36+1/
(-9)-(-13)+(-20)+(-2)3+13-(-7)/6(-2)-8-14-13(-7)*(-1)/7+8(-11)*4-(-18)/184+(-11)-1/(-3)(-17)-6-16/(-
1.125*3+125*5+25*3+252.9999*3+101*11*(101-92)3.(23/4-3/4)*(3*6+2)4.3/7×49/9-4/35.8/9×15/36+1/276.12×
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)
到这里看看,有没有你需要的.
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)
[35.16*0.25+38.42/2)*0.2-1.63-2.36]/0.25=[(8.79+19.21)*0.2-1.63-2.36]/0.25=[5.6-1.63-2.36}/0.25=1.61
59-24/6=90/10/3=56-21/7=72/9+88=14+12/6=10*19+11=53-56/8=14+5*7=8/1-7=41+5*15=170-19*4=115-7*16=