要过程、、计算①(-2)×(-2分之1)×(-3)=②(-2分之1)×(-3分之1)=③3又3分之2×(-1又5分之3)=④0×(-11又99分之1)=⑤(-1)×125=⑥(-2)×(-7)×(-5)×(-7分之1)=⑦1.6×(-1又5分之4)×(-2.5)×(-8
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 08:19:14
![要过程、、计算①(-2)×(-2分之1)×(-3)=②(-2分之1)×(-3分之1)=③3又3分之2×(-1又5分之3)=④0×(-11又99分之1)=⑤(-1)×125=⑥(-2)×(-7)×(-5)×(-7分之1)=⑦1.6×(-1又5分之4)×(-2.5)×(-8](/uploads/image/z/609824-56-4.jpg?t=%E8%A6%81%E8%BF%87%E7%A8%8B%E3%80%81%E3%80%81%E8%AE%A1%E7%AE%97%E2%91%A0%28-2%29%C3%97%28-2%E5%88%86%E4%B9%8B1%29%C3%97%28-3%29%3D%E2%91%A1%28-2%E5%88%86%E4%B9%8B1%29%C3%97%28-3%E5%88%86%E4%B9%8B1%29%3D%E2%91%A23%E5%8F%883%E5%88%86%E4%B9%8B2%C3%97%28-1%E5%8F%885%E5%88%86%E4%B9%8B3%29%3D%E2%91%A30%C3%97%EF%BC%88-11%E5%8F%8899%E5%88%86%E4%B9%8B1%EF%BC%89%3D%E2%91%A4%EF%BC%88-1%EF%BC%89%C3%97125%3D%E2%91%A5%EF%BC%88-2%EF%BC%89%C3%97%EF%BC%88-7%EF%BC%89%C3%97%EF%BC%88-5%EF%BC%89%C3%97%EF%BC%88-7%E5%88%86%E4%B9%8B1%EF%BC%89%3D%E2%91%A61.6%C3%97%EF%BC%88-1%E5%8F%885%E5%88%86%E4%B9%8B4%EF%BC%89%C3%97%EF%BC%88-2.5%EF%BC%89%C3%97%EF%BC%88-8)
要过程、、计算①(-2)×(-2分之1)×(-3)=②(-2分之1)×(-3分之1)=③3又3分之2×(-1又5分之3)=④0×(-11又99分之1)=⑤(-1)×125=⑥(-2)×(-7)×(-5)×(-7分之1)=⑦1.6×(-1又5分之4)×(-2.5)×(-8
要过程、、计算①(-2)×(-2分之1)×(-3)=
②(-2分之1)×(-3分之1)=
③3又3分之2×(-1又5分之3)=
④0×(-11又99分之1)=
⑤(-1)×125=
⑥(-2)×(-7)×(-5)×(-7分之1)=
⑦1.6×(-1又5分之4)×(-2.5)×(-8分之3)=
要过程、、计算①(-2)×(-2分之1)×(-3)=②(-2分之1)×(-3分之1)=③3又3分之2×(-1又5分之3)=④0×(-11又99分之1)=⑤(-1)×125=⑥(-2)×(-7)×(-5)×(-7分之1)=⑦1.6×(-1又5分之4)×(-2.5)×(-8
①(-2)×(-2分之1)×(-3)
=1×(-3)
=-3;
②(-2分之1)×(-3分之1)
=(-1/6);
③3又3分之2×(-1又5分之3)
=(11/3)×(-8/5)
=-88/15;
④0×(-11又99分之1)
=0;
⑤(-1)×125
=-125;
⑥(-2)×(-7)×(-5)×(-7分之1)
=(-2)×(-5)×(-7)×(-1/7)
=10×1
=10;
⑦1.6×(-1又5分之4)×(-2.5)×(-8分之3)
=1.6×(-3/8)×(-9/5)×(-2.5)
=-0.6×4,5
=-2.7;
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1、6 (11/3)*(-8/3)=-88/9 0 -125 10 (8/5)*(-9/5)*(-5/2)*(-3/8)=-27/10=-2.7