人教版数学七年级下册第六章《实数》单元测验卷

适用年级:初一
试卷号:65638

试卷类型:单元测试
试卷考试时间:2019/2/28

1.单选题(共6题)

1.
下列等式正确的是  
A.B.C.D.
2.
算术平方根等于3的是(  )
A.B.3C.9D.
3.
立方根等于它本身的有
A.0,1B.-1,0,1C.0,D.1
4.
0.49的算术平方根是(  )
A.±0.7B.-0.7C.0.7D.
5.
下列说法正确的是(   )
A.的平方根是±2B.-a2一定没有有算术平方根
C.-表示2的算术平方根的相反数D.0.9的算术平方根是0.3
6.
=2,则(2a-5)2-1的立方根是(  )
A.4B.2C.±4D.±2

2.选择题(共5题)

7.下列过程一定释放出能量的是(   )
8.选择合适的单词补全短文。

Spring is a beautiful{#blank#}1{#/blank#} of a year. It's from March to {#blank#}2{#/blank#}. A lot of flowers come out. The weather is windy and {#blank#}3{#/blank#}. Spring is the best time to {#blank#}4{#/blank#}trees. I like spring best. {#blank#}5{#/blank#}my birthday is in April. It's on {#blank#}6{#/blank#}18th . 1 usually have a party {#blank#}7{#/blank#}that day.

9.选择合适的单词补全短文。

Spring is a beautiful{#blank#}1{#/blank#} of a year. It's from March to {#blank#}2{#/blank#}. A lot of flowers come out. The weather is windy and {#blank#}3{#/blank#}. Spring is the best time to {#blank#}4{#/blank#}trees. I like spring best. {#blank#}5{#/blank#}my birthday is in April. It's on {#blank#}6{#/blank#}18th . 1 usually have a party {#blank#}7{#/blank#}that day.

10.选择合适的单词补全短文。

Spring is a beautiful{#blank#}1{#/blank#} of a year. It's from March to {#blank#}2{#/blank#}. A lot of flowers come out. The weather is windy and {#blank#}3{#/blank#}. Spring is the best time to {#blank#}4{#/blank#}trees. I like spring best. {#blank#}5{#/blank#}my birthday is in April. It's on {#blank#}6{#/blank#}18th . 1 usually have a party {#blank#}7{#/blank#}that day.

11.选择合适的单词补全短文。

Spring is a beautiful{#blank#}1{#/blank#} of a year. It's from March to {#blank#}2{#/blank#}. A lot of flowers come out. The weather is windy and {#blank#}3{#/blank#}. Spring is the best time to {#blank#}4{#/blank#}trees. I like spring best. {#blank#}5{#/blank#}my birthday is in April. It's on {#blank#}6{#/blank#}18th . 1 usually have a party {#blank#}7{#/blank#}that day.

3.填空题(共7题)

12.
已知某数且满足,则x必为___________.
13.
计算:的结果是___________.
14.
比较大小:
(1)______6;   (2)-+1_____-.
15.
,则=_________________.
16.
比较下列各数的大小:(1)_________;(2)________.
17.
观察下列式子,猜想规律并填空
____
18.
若x+3是4的平方根,则x=___________,若-8的立方根为y-1,则y=___________

4.解答题(共5题)

19.
实数a、b在数轴上的位置如图所示,化简=_____.
20.
求下列各式中的x:
(1)2x2=14; (2)
21.
计算:(1);  
(2)
22.
设a、b、c都是实数,且满足,则的平方根是多少?
23.
观察:
===2,即=2===3,即=3。猜想等于什么,并通过计算验证你的猜想。
试卷分析
  • 【1】题量占比

    单选题:(6道)

    选择题:(5道)

    填空题:(7道)

    解答题:(5道)

  • 【2】:难度分析

    1星难题:0

    2星难题:0

    3星难题:0

    4星难题:0

    5星难题:0

    6星难题:4

    7星难题:0

    8星难题:8

    9星难题:6