有理数的乘法、有理数及其运算.几道计算题不会,神仙 0x(-5/6);(-3)x0.3;3x(-1/3);(-1/6)x(-6/7);(-3/4)x(-8);(0.25-2/3)x(-36);30x(1/2-1/3);8x(-4/5)x1/16;(1/3+1/4-1/6)x24;100x(-3)x(-5)x0.01;(1/4-1/2-1/8)x128;2.25x(-2.3)x3/25;(-4)x(-5)x0.25;(-2.1)x6.5x(-3/7);
问题描述:
有理数的乘法、有理数及其运算.几道计算题不会,
神仙
0x(-5/6);
(-3)x0.3;
3x(-1/3);
(-1/6)x(-6/7);
(-3/4)x(-8);
(0.25-2/3)x(-36);
30x(1/2-1/3);
8x(-4/5)x1/16;
(1/3+1/4-1/6)x24;
100x(-3)x(-5)x0.01;
(1/4-1/2-1/8)x128;
2.25x(-2.3)x3/25;
(-4)x(-5)x0.25;
(-2.1)x6.5x(-3/7);
答
0;-0.9;-1;1/7;6;.........下期再给!
答
0;-0.9;-1;1/7;6
答
0x(-5/6)=0;
(-3)x0.3=-0.9;
3x(-1/3)=-1;
(-1/6)x(-6/7)=1/7;
(-3/4)x(-8)=6;
(0.25-2/3)x(-36)=(1/4-2/3)×(-36)=(3/12-8/12)×(-36)=-5/12×(-36)=15;
答
作为初一的数学老师,我觉得你上课肯定没有认真听课,孩子,不要指望网络啊,自己好好学