挑战习题
1
/5
单选题
难度:
1.下列选项不是同类项的是()
A
-1和0
B
-4xy
2
z和-4x
2
yz
2
C
-x
2
y和2yx
2
D
-a
3
和4a
3
提示1:
6ICD5a+f5ZCM57G76aG555qE5qaC5b+1
正确答案:
Qg==
5omA5ZCr5a2X5q+N55u45ZCM77yM5bm25LiU55u45ZCM5a2X5q+N55qE5oyH5pWw5Lmf55u45ZCM55qE6aG55Y+r5ZCM57G76aG544CC5bi45pWw6aG55Lmf5piv5ZCM57G76aG5LkLpobnkuK08aW1nIHdpZHRoPTMxIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzczLzJFL3JCQUNFMVRJdExMU2hHMzhBQUFCbFhVd2tMNDY0My5wbmciPueahOaMh+aVsOWdh+S4jeebuOWQjA==
2
/5
单选题
难度:
2.下列各对单项式中,不是同类项的是( )
A
0与
B
与
C
与
D
与
提示1:
5ZCM57G76aG55a6a5LmJ5Lit55qE5Lik5Liq4oCc55u45ZCM4oCd77ya77yIMe+8ieaJgOWQq+Wtl+avjeebuOWQjO+8m++8iDLvvInnm7jlkIzlrZfmr43nmoTmjIfmlbDnm7jlkIw=
正确答案:
RA==
ROmhueS4rWFi55qE5oyH5pWw5LiN55u45ZCM44CC5pWF5LiN5piv5ZCM57G76aG577yM6YCJRA==
3
/5
单选题
难度:
3.下列说法正确的是()
A
字母a与b是同类项
B
有理数2
3
与(-3)
2
是同类项
C
代数式xyz与abc是同类项
D
代数式xyz与x
2
y
2
z
2
是同类项
提示1:
6ICD5a+f5ZCM57G76aG555qE5qaC5b+1
正确答案:
Qg==
5omA5ZCr5a2X5q+N55u45ZCM77yM5bm25LiU55u45ZCM5a2X5q+N55qE5oyH5pWw5Lmf55u45ZCM55qE6aG55Y+r5ZCM57G76aG544CC5bi45pWw6aG55Lmf5piv5ZCM57G76aG544CC5pWF6YCJQuOAgg==
4
/5
单选题
难度:
4.下列各组中,不是同类项的是
A
3和0
B
C
xy与2pxy
D
提示1:
5ZCM57G76aG55qaC5b+157uG6IqC
提示2:
5ZCM57G76aG55a6a5LmJ5Lit55qE5Lik5Liq4oCc55u45ZCM4oCd77ya77yIMe+8ieaJgOWQq+Wtl+avjeebuOWQjO+8m++8iDLvvInnm7jlkIzlrZfmr43nmoTmjIfmlbDnm7jlkIw=
正确答案:
Qw==
Q+mhueS4reS4gOS4quWtl+avjeS4unh577yM5Y+m5LiA5Liq5Li6cHh5LOaVheS4jeespuWQiOWQjOexu+mhueamguW/te+8jOaJgOWQq+Wtl+avjeS4jeWQjOOAguaVhemAiUM=
5
/5
单选题
难度:
5.下列判断中正确的个数是( )(1)所含字母相同,次数也相同的项叫同类项(2)0.5a
2
bc
3
与-0.5a
2
bc
3
两项是同类项(3)
与3
是同类项(4)-1和
是同类项(5)2x
3
y
4
与3x
4
y
3
是同类项;(6)
是同类项
A
3
B
4
C
5
D
6
提示1:
5qC55o2u5ZCM57G76aG555qE5a6a5LmJ
提示2:
5ZCM57G76aG55a6a5LmJ5Lit55qE5Lik5Liq4oCc55u45ZCM4oCd77ya77yIMe+8ieaJgOWQq+Wtl+avjeebuOWQjO+8m++8iDLvvInnm7jlkIzlrZfmr43nmoTmjIfmlbDnm7jlkIw=
正确答案:
QQ==
77yIMe+8ieagueaNruWQjOexu+mhueeahOWumuS5ie+8jOaJgOWQq+Wtl+avjeebuOWQjO+8jOebuOWQjOWtl+avjeeahOaMh+aVsOS5n+ebuOWQjOeahOmhueWPq+WQjOexu+mhue+8jOmUmeivr+OAgu+8iDLvvInvvIgz77yJ77yINO+8ieespuWQiOWumuS5ie+8jOato+ehruOAgu+8iDXvvInnm7jlkIzlrZfmr43nmoTmjIfmlbDkuI3nm7jlkIzvvIzkuI3mmK/lkIznsbvpobku77yINu+8ieWIhuW8j++8jOS4jeaYr+aVtOW8j+iMg+WbtO+8jOS4jeaYr+WQjOexu+mhueOAguaVhemAiUE=