首页
下列计算正确的是A.3×3=3B.=-3C.2+4=6D.÷=3
试题详情
下列计算正确的是( )
A.3
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
3CbqNeib7Vsx3f0OnEqU4KTNCbz3/HgIbCWoBEhwqjxFdV9BsDcdTd/knEvnjCAIc2Q7U5hh5Sjt
5CCrd3BUaj5Kk1ffswqHovpcuW+ma+4wAiTMHhzrRvUt5WpqFT4BvDKYovKwNAUAAAAASUVORK5C
YII=
)
×3
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC/SURBVDhPzZNBEsUQEETnXBaOY+8m1g5iOwfJ
wlH6ZwRJ8ItklVSpQmn9picIg4+IsDT+iUf77R59XMz2zEB7xIw7x44e2nI+zrASZl5PxZG5OskN
0WtQdp+Ku0ClhFXnVsyWUKp45nyrH3ggjvDaokQnRIRgchtMJZRfs8fV8KVHpVUhhDR1iqDcluat
WBKu3ZIDe2iyPi0SweF+FUtA/SM58G98ZscV9xH28A1cNzenQMq9E8tF4v7KuVCsin81ApctPDAe
KwAAAABJRU5ErkJggg==
)
=3
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
B.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACgAAAAbCAYAAAAOEM1uAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
=-3
C.2
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
3CbqNeib7Vsx3f0OnEqU4KTNCbz3/HgIbCWoBEhwqjxFdV9BsDcdTd/knEvnjCAIc2Q7U5hh5Sjt
5CCrd3BUaj5Kk1ffswqHovpcuW+ma+4wAiTMHhzrRvUt5WpqFT4BvDKYovKwNAUAAAAASUVORK5C
YII=
)
+4
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC/SURBVDhPzZNBEsUQEETnXBaOY+8m1g5iOwfJ
wlH6ZwRJ8ItklVSpQmn9picIg4+IsDT+iUf77R59XMz2zEB7xIw7x44e2nI+zrASZl5PxZG5OskN
0WtQdp+Ku0ClhFXnVsyWUKp45nyrH3ggjvDaokQnRIRgchtMJZRfs8fV8KVHpVUhhDR1iqDcluat
WBKu3ZIDe2iyPi0SweF+FUtA/SM58G98ZscV9xH28A1cNzenQMq9E8tF4v7KuVCsin81ApctPDAe
KwAAAABJRU5ErkJggg==
)
=6
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACySURBVDhPzZO5EcMgEEW3LgLKId9OiCmElEIU
UMq3lsOAjTRrRWaGhOH9Y5EIm0VEUO0reHf+eUb/D+dgxxxsQD4jK2MncAPmmjo4MTh9T0cBZwTb
n44xayjg4ZhYRCyCFNZ3HgJlcK3DT85VYgyPEF17AveWl0/zep1wd44xlnveEIw/apcbOPGuc0lQ
3Rc4B9jpR5mfbMnnzkvifh97FFrgwxuQ8c9g0RT3R849kBZ+AeaPnaoEN+d7AAAAAElFTkSuQmCC
)
D.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABYAAAASCAYAAABfJS4tAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADwSURBVDhP3ZOxDcQgDEU9FwXjpGcTagah9SAp
PIoPQyCYgCJ0V52lSAEnn8/7ADwpAOCvn5XwbH5nDv5UGN3N3Aambpvonnk4ZH5HQYGtfJkL2Umw
dZx6obZynzhYyyGt/CpMiMohBctQXROpHouJq/cq/AhXsLQd6K4sasVuqm1hYTrXvTHsCyvew146
DJvC4sil+ObVYyjC8biO0tH+kOs8FrqS9kK2nYbahxhjfvcG2PizgB+ExY3imgJU4wGDRpGdF9e9
8OwCAGgkI4YH4yM5FdczFCsIq3kF8/SGwfjfC8vq4vrnjluik1Oxi+ID6fBRY8L0uLEAAAAASUVO
RK5CYII=
)
÷
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
3CbqNeib7Vsx3f0OnEqU4KTNCbz3/HgIbCWoBEhwqjxFdV9BsDcdTd/knEvnjCAIc2Q7U5hh5Sjt
5CCrd3BUaj5Kk1ffswqHovpcuW+ma+4wAiTMHhzrRvUt5WpqFT4BvDKYovKwNAUAAAAASUVORK5C
YII=
)
=3
相关试题
-
下列计算正确的是( )
A.3
×3
=3![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADISURBVDhP1ZOxDcQgDEU9FwXj0HsTagahZZAU
jPIPgwMhxyko3SFFigzP3/+TEBaLiLD1/IJX9XuN/gTOAbbmYREysD12DrZDp9U9OHEBGekW0Aac
ESyBWRq0K2Tt8gyrKqdGXMd/hOthG1Dy0ZXAqv4CbjZsiZsQnXpxvbf4GkL3sDSD4oJijPWcNwTj
j/o+wWVgUaIzJclAbQyJOkFTn2GpNJ8t7XFlk2dXNkX9G17/JhN8eAMy/h0s/UX9lXL/Zq9pryeu
1Q+uWIPqmKo/AAAAAABJRU5ErkJggg==
)
B.
=-3
C.2
+4
=6![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACySURBVDhPzZO5EcMgEEW3LgLKId9OiCmElEIU
UMq3lsOAjTRrRWaGhOH9Y5EIm0VEUO0reHf+eUb/D+dgxxxsQD4jK2MncAPmmjo4MTh9T0cBZwTb
n44xayjg4ZhYRCyCFNZ3HgJlcK3DT85VYgyPEF17AveWl0/zep1wd44xlnveEIw/apcbOPGuc0lQ
3Rc4B9jpR5mfbMnnzkvifh97FFrgwxuQ8c9g0RT3R849kBZ+AeaPnaoEN+d7AAAAAElFTkSuQmCC
)
D.
÷
=3
-
下列计算正确的是( )
A.x6÷x2=x3
B.5a2b-2a2b=3
C.(2x2)3=8x6
D.(a-b)2-2ab=a2+b2
-
下列计算错误的是( )
A.(-2x)3=-2x3
B.-a2•a=-a3
C.(-x)9÷(-x)3=x6
D.(-2a3)2=4a6
-
(2007•眉山)下列计算错误的是( )
A.(-2x)3=-2x3
B.-a2•a=-a3
C.(-x)9÷(-x)3=x6
D.(-2a3)2=4a6
-
下列运算正确的是( )
A.a•a3=a3
B.(ab)3=ab3
C.a3+a3=a6
D.(a3)2=a6
-
下列计算正确的是( )
A.a6÷a2=a3
B.a+a4=a5
C.(ab3)2=a2b6
D.a-(3b-a)=-3b
-
下列计算正确的是( )
A.a2•a3=a6
B.a2-b2=﹙a-b﹚2
C.﹙3b3﹚2=3b6
D.﹙-a﹚5÷﹙-a﹚3=a2
-
下列计算正确的是( )
A.3a-a=3
B.2a•a3=a6
C.(3a)2=2a6
D.2a÷a=2
-
下列计算正确的是( )
A.a6÷a2=a3
B.(-2)-1=2
C.(-3x2)•2x3=-6x6
D.(π-3)=1
-
下列计算正确的是( )
A.a6÷a2=a3
B.(-2)-1=2
C.(-3x2)•2x3=-6x6
D.(π-3)=1