本课配套习题挑战模式2/5
单选题
难度系数:
2.下列计算正确的是()
A: -91÷13=7 |
B: (-56)÷(-4)=-14 |
C: (-42)÷12= |
D: 84÷(-7)=12 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pyJ55CG5pWw6Zmk5rOV5rOV5YiZ77ya6Zmk5Lul5LiA5Liq5LiN562J5LqOMOeahOaVsO+8jOetieS6juS5mOi/meS4quaVsOeahOWAkuaVsA==
- 答案:Qw==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.如果a+b<0,,那么下列结论成立的是()
A: a>0,b>0 |
B: a<0,b<0 |
C: a>0,b<0 |
D: a<0,b>0 |
一次做对,真牛!
+5奖励规则>
- 提示1:5YWI6ICD6JmRPGltZyB3aWR0aD0zMyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS8zMy9yQkFDRkZUSW84Q0Rja2hNQUFBQnBtWXhPOEk5MjUucG5nIj7lr7lhLGLnrKblj7fnmoTlvbHlk43vvIzlho3ogIPomZFh77yLYu+8nDDlr7lhLGLnrKblj7fnmoTlvbHlk40=
- 答案:Qg==
PGltZyB3aWR0aD02NiBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9FRi9yQkFDSjFUSW84RHlvS3JWQUFBQ0dTRDI4SUk3MzAucG5nIj5h77yMYuWQjOWPt+OAguWPiOKItWHvvIti77ycMO+8jOKItGHvvJww77yMYu+8nDDjgILmlYXpgIlC
本课配套习题挑战模式4/5
单选题
难度系数:
4.一个数的倒数的相反数是,则这个数是()
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:55So5pa556iL5aSE55CG
- 答案:Qg==
6K6+5q2k5pWw5Li6eCzliJnvvJo8aW1nIHdpZHRoPTcwIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0VGL3JCQUNKMVRJbzdxeGw1VC1BQUFCMHo3Y3hDSTQ4Mi5wbmciPu+8jHg9PGltZyB3aWR0aD0yOSBoZWlnaHQ9Mzkgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83My8yNC9yQkFDRTFUSW83cWlmRnFzQUFBQnNBSEUwUEkyODEucG5nIj4s5pWF6YCJQg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.如果两个非零数互为相反数,那么下列说法中错误的是()
A: 它们的和一定为零 |
B: 它们的差一定是正数 |
C: 它们的积一定是负数 |
D: 它们的商一定等于﹣1 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rOo5oSP6KKr5YeP5pWw5YeP5pWw5piv5ZCm56Gu5a6a
- 答案:Qg==
5qC55o2u5a6a5LmJ77ya5Y+q5pyJ56ym5Y+35LiN5ZCM55qE5Lik5pWw5LqS5Li655u45Y+N5pWw77yM5Zug5q2kQS5DLkTnoa7lrprmraPnoa7jgIJC77yM6Iul6KKr5YeP5pWw5Li65q2j77yM5YeP5pWw5Li66LSf77yM5YiZ5beu5Li65q2j77yb6Iul6KKr5YeP5pWw5Li66LSf77yM5YeP5pWw5Li65q2j77yM5YiZ5beu5Li66LSf44CC5pWF6YCJQg==