本课配套习题挑战模式1/5
单选题
难度系数:
1.下列各式计算正确的是()
A: (-3)×(-2)=-6 |
B: (-4)×(-3)×(-5)=-60 |
C: -8×7+(-2)×7+(-5)×0=0 |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5pyJ55CG5pWw5LmY5rOV5rOV5YiZ
- 答案:Qg==
QS7ljp/lvI89Nu+8jEIu5q2j56Gu77yMQy7ljp/lvI89KC04LTIpw5c3PS03MO+8jEQu566A5L6/566X5rOV77yM5bqU55So5LmY5rOV5YiG6YWN5b6L77ya5Y6f5byPPTxpbWcgd2lkdGg9MjI3IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0IwL3JCQUNKbFRJb3k3RGptYXFBQUFEcHVSWDJBSTQzOC5wbmciPu+8jOaVhemAiUI=
本课配套习题挑战模式4/5
单选题
难度系数:
4.下列各式中,计算结果为负数的是 ()
A: (-3)×(-4)×6.2 |
B: |-3|×|-4|×(-5.5)×(-3) |
C: (-13)×(-40)×(-99.8) |
D: (-15)×|-87|×0 |
一次做对,真牛!
+5奖励规则>
- 提示1:57ud5a+55YC85YWI5YyW566A
- 提示2:5pyJ55CG5pWw5LmY5rOV77yM56ym5Y+35rOV5YiZ
- 答案:Qw==
Qe+8jui0n8OX6LSfw5fmraM95q2j77yMPGJyPkIu5q2jw5fmraPDl+i0n8OX6LSfPeato++8jDxicj5DLiDotJ/Dl+i0n8OX6LSfPei0n++8jDxicj5ELuWHoOS4quaVsOebuOS5mO+8jOWmguaenOWFtuS4reacieWboOaVsOS4ujDvvIzpgqPkuYjnp6/nrYnkuo4wLuaVhemAiUM=