本课配套习题挑战模式1/5
有理数a,b,c在数轴上对应的点如图所示,化简|b+a|+|a+c|+|c-b|的结果是( )
A: 2b-2c |
B: 2c-2b |
C: 2b |
D: -2c |
- 提示1:PHA+5YWI5qC55o2u5ZCE54K55Zyo5pWw6L205LiK55qE5L2N572u5Yik5pat5Ye6YeOAgWLjgIFj44CBZOeahOespuWPt++8jOWGjeagueaNrue7neWvueWAvOeahOaAp+i0qOWOu+aOiee7neWvueWAvOespuWPt+WNs+WPrzwvcD4=
- 答案:QQ==
PGRpdj48cCBhbGlnbj0ibGVmdCI+6Kej77ya55Sx5Zu+5Y+v55+l77yaPGJyPmPvvJxi77ycMO+8nGHvvIwtY++8nmHvvIwtYu+8nGHvvIw8YnI+4oi0YSti77yeMO+8jGErY++8nDDvvIxjLWLvvJwwPGJyPuKItHxiK2F8K3xhK2N8K3xjLWJ8PWErYi1hLWMrYi1jPTJiLTJjPC9wPjwvZGl2Pg==
本课配套习题挑战模式2/5
a、b、c的大小关系如图所示,则 的值是( )
A: -1 |
B: 1 |
C: -4 |
D: 3 |
- 提示1:PHA+5qC55o2u5pWw6L2056Gu5a6aY++8nGHvvJww77ycYu+8jOi/m+iAjOWPr+ehruWummEtYu+8jGItY++8jGMtYe+8jGFiLWFj55qE56ym5Y+3PC9wPg==
- 答案:Qw==
PGRpdj48cCBhbGlnbj0ibGVmdCI+6Kej77ya5LuO5Zu+5Lit5Y+v6KeB77yMY++8nGHvvJxi5LiUYe+8nDDvvIxi77yeMO+8jGPvvJwwPC9wPjxwIGFsaWduPSJsZWZ0Ij7iiLRhLWLvvJww77yMYi1j77yeMO+8jGMtYe+8nDDvvIxhYu+8nDDvvIxhY++8njA8YnI+4oi0YWItYWPvvJww77yMPC9wPjxwIGFsaWduPSJsZWZ0Ij7iiLTljp/lvI89LTEtMS0xLTE9LTQ8L3A+PC9kaXY+
本课配套习题挑战模式3/5
已知有理数a,b,c在数轴上的对应位置如图,则|1-2c|+|c-2a|+2|a-2b|=( )
A: 1-4a+4b-c |
B: -1-4a+4b+3c |
C: 1+4b-3c |
D: 1+4a-4b-3c |
- 提示1:PHA+5qC55o2u5pyJ55CG5pWwYe+8jGLvvIxj5Zyo5pWw6L205LiK55qE5a+55bqU5L2N572u5Y+v5Lul5b6X5YiwLTHvvJxj77ycMO+8nGHvvJxiPC9wPg==
- 提示2:PHA+5YiG5Yir5Y+v5Lul5b6X5YiwMS0yY++8njDvvIxjLTJh77ycMO+8jGEtMmLvvJww77yM5pyA5ZCO5Yip55So57ud5a+55YC855qE5oCn6LSo5Y2z5Y+v5YyW566APC9wPg==
- 答案:Qw==
PGRpdj48cCBhbGlnbj0ibGVmdCI+6Kej77ya5L6d6aKY5oSP5b6XPGJyPi0x77ycY++8nDDvvJxh77ycYu+8jDxicj7iiLQxLTJj77yeMO+8jGMtMmHvvJww77yMYS0yYu+8nDDvvIw8YnI+4oi0fDEtMmN8K3xjLTJhfCsyfGEtMmJ8PTEtMmMt77yIYy0yYe+8iS0y77yIYS0yYu+8iT0xLTJjLWMrMmEtMmErNGI9MS0zYys0YjwvcD48L2Rpdj4=
本课配套习题挑战模式4/5
有理数a、b、c在数轴上的位置如图,式子|a|-|b|+|a+b|-|b-c|化简结果为( )
A: -b+c |
B: -b-c |
C: b-c |
D: 2a-b-c |
- 提示1:PHA+55Sx5Zu+55+l77yMYe+8nDDvvIxj77yeYu+8njDvvIxhK2LvvJ4w77yMYi1j77ycMDwvcD4=
- 答案:Qw==
PGRpdj48cCBhbGlnbj0ibGVmdCI+6Kej77ya55Sx5pWw6L205b6X77yMYe+8nDDvvIxj77yeYu+8njDvvIw8YnI+4oi0YSti77yeMO+8jGItY++8nDDvvIw8YnI+4oi0fGF8LXxifCt8YStifC18Yi1jfD0tYS1iK2ErYitiLWM9Yi1jPC9wPjwvZGl2Pg==
本课配套习题挑战模式5/5
若a,b,c三数在数轴上的对应点如下图,其中O是原点,且|a|=|c|,则|a+c|+|b|可化简为( )
A: a+b+c |
B: b |
C: -b |
D: a+c-b |
- 提示1:PHA+5qC55o2u5pWw6L205LiK5ZCE54K555qE5L2N572u5Yik5pat5Ye6YStj77yMYueahOato+i0n++8jCDnhLblkI7ljrvnu53lr7nlgLw8L3A+
- 答案:Qw==
PGRpdj48cCBhbGlnbj0ibGVmdCI+6Kej77ya55Sx5Zu+56S65Y+v55+l77yMYu+8nGPvvJww77ycYe+8jDxicj7iiLV8Y3w9fGF877yMY++8nDDvvJxh77yM4oi0YT0tY++8jjwvcD48cCBhbGlnbj0ibGVmdCI+Yu+8nDDvvIziiLR8Ynw9LWLvvIw8YnI+5YiZfGErY3wrfGJ8PXzvvIgtY++8iStjfCt8Ynw9MCvvvIgtYu+8iT0tYu+8jjwvcD48L2Rpdj4=