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【简答题】
为了解A,B两种轮胎的性能,某汽车制造厂分别从这两种轮胎中随机抽取了8个进行测试,下面列出了每一个轮胎行驶的最远里程数(单位:1 000 km) 轮胎A     96,        112,        97,     108,        100,        103,        86,     98 轮胎B     108,   101,   94,        105,   96,        93,        97,        106 (1)分别计算A,B两种轮胎行驶的最远里程的平均数,中位数; (2)分别计算A,B两种轮胎行驶的最远里程的极差、标准差; (3)根据以上数据你认为哪种型号的轮胎性能更加稳定?
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【单选题】计算2.5×7.15÷0.62
A.
28.8306
B.
29
C.
29.0
D.
28.831
【简答题】[(1.8-0.6)÷□+2.5]×0.4=3.4□中填______.
【单选题】[音频] Why do young people like the Internet?
A.
It completely replaces traditional education.
B.
It meets young people’s needs.
C.
It allows young people more freedom.
【简答题】写出乘法算式. (1)2.5+2.5+2.5+2.5=______×______ (2)0.3+0.3+0.3+0.3+0.3+0.6=______×______.
【简答题】计算 ×0.6÷ ×|-2.5|=
【简答题】直接写得数:0.4- 1 3 =______ 7.15×2.5×18+1.5×28×7.15=______ 13 13 14 ÷13=______ ( 3 35 - 2 36 )×35×36=______ 3+6+9+12+…+96+99=______ ( 1 2 + 1 3 + 1 4 + 1 5 + 1 6 )+( 2 3 + 2 4 + 2 5 + 2 6 )+( 3 4 + 3 5 + 3...
【单选题】Why do American young people usually leave their families at eighteen or nineteen?
A.
Their working place is too far away from their families.
B.
Their families can not support them.
C.
Living independently is considered an important American value.
D.
American young people are forced to live independently.
【简答题】直接写出得数。 3.6÷0.6= = = 10×10%= 2.5× = =
【简答题】竖式计算验算 (1)2.4×0.15= (2)7.15÷2.5=
【单选题】4的倒数是[ ]A.0.6B.C.2.5
A.
0.4的倒数是 [     ] A.0.6
B.
C.
2.5
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