资源简介

榆次区2024-2025学年第一学期期中学业水平质量监测题（卷）
七年级数学
姓
名
准考证号
注意事项：
1.本试卷共8页，满分100分，-考试时间90分钟。
2.答卷前，考生务必将自己的姓名、准考证号填写在本试卷相应的位置。
3.答案全部在答题卡上完成，答在本试卷上无效：
4.考试结束后，将本试卷和答题卡一并交回：
一、选择题（本大题共10个小题，每小题3分，共30分。在每个小题给出的
四个选项中，只有一项符合题目要求，请选出并在答题卡上将该项涂黑)
1.有理数-2的绝对值是
A-2
B.2
c
D
2.夜晚流星划过天空时留下一道明亮的光线，节日的焰火画出
的曲线组成优美的图案，从这些现象中我们发现
A点动成线
B.线动成面
C面动成体
D以上都不对
3小华新买了一个如图所示的笔筒，下列关于这个笔筒的描述错误的是
A笔简可以近似地看成六棱柱
B.它的所有侧棱长都相等
C.它有10个顶点·
D.侧面的形状都是长方形
七年级数学试题第1页（共8页）
CS扫描全能王
3亿人都在用的扫猫AP8
4.小敏用胡萝卜做了一个圆柱体模型，若用一个平面去截该模型，截面的形
状不可能是
A
B
5.2024年7月，国家统计局发布2024年夏粮产量数据，
我省小麦总产量为49.64亿斤，比上年增加0.22亿斤，
增长0.45%：单产626.95斤亩，创历史新高。数据
49.64亿斤用科学记数法可以表示为
A4.964×10°斤
B.49.64103斤
C.0.4964×1010斤
D.4.964×10斤
6.下列说法正确的是
A不是正数的数一定是负数
B.所有的有理数都能用数轴上的点表示
C:下与0之间没有负数了
D两数相加，和一定大于任何一个加数
7两个数相除，若商为正数，则这两个数
A都是正数
B.都是负数
C.一正一负
D.符号相同
8.下列计算中，结果正确的是
A.x2+x2=x
1B.5a3-7a3=-2a3
C.2x2-x2=2
D.3(x-8)=3x-8
9.下列各式中；是三次二项式的是
A.a2-1
B.23+22+2
C.ab2+a"b
D.a2+2ab+b2
10.如图，某种细胞每过30im便由1个分裂成2个。
经过6，这种细胞能由1个分裂成
A.12个
B.122个
C.26个
D.22个
七年级数学试题第2页（共8页）
CS扫描全能王
3亿人都在用的扫猫AP8榆次区2024-2025学年第一学期期中学业水平质量监测题（卷）
七年级数学参考答案及评分标准
10 3 30
1 2 3 4 5 6 7 8 9 10
B A C A A B D B C D
5 3 15
11. 这个物体向西运动2m 12. 2x4(答案不唯一) 13. （ 8a+b）
14. 118 15.-4
8 55
16. （本题9分）
解：（1）15-27-(-10)+3 2 15 3 （ ） （ 4） 10
4
=-12+10+3························1分
20 ( 4) 10 ·························· 4分
=-2+3······························2分
80 10 ·································· 5分
=1·································· 3分
=70·········································· 6分
3 解法一： 3 解法二：
( 3 2 ) [( )2 2] ( 3 ) [( 2 )2 2]
2 3 2 3
( 3 4 3 ) ( 2) ( ) (4 2)
2 9 ····························7分 2 9 ····························7分
( 3) ( 14 ) ( 3 ) 4 3 ( ) 2
2 9 ······························ 8分 2 9 2
7 2
3
3 ··········································9分 3 ···································· 8分
7

3 ··········································9分
17.（本题6分）
从正面看 从左面看 从上面看
········································································每个2分，共6分
1
18.（本题6分）
解：小敏的说法有道理。·······························································1分
理由如下：
2(2a2 a 18) (4a2 a 3) a
4a2= 2a 36 4a
2 a 3 a ···················································· 3分
(4a2= 4a
2 ) (2a a a) (36 3) ···············································4分
=39·················································································· 5分
所以a为任何数，原代数式的值都为39。小敏的说法有道理。·······6分
19. （本题6分）
解：（1）-3.5·············································································1分
（2）-2.3··············································································3分
（3）11.3-10=1.3（米），3.5-1.3=2.2（米）································5分
所以点D比点B高2.2米。························································ 6分
20. （本题5分）
解：（1）原式=(3-4+2)(x-y)2=(x-y)2。············································ 2分
x y 3 (x y)2 (3)2 9当 时，原式 。··························· 3分
2 2 4
（2）9。··········································································· 5分
21. （本题9分）
（1）①481；········································································ 2分
②9；············································································· 4分
（2）D；··············································································6分
（3）①(2a+2b+4c+40)；························································· 8分
②160。········································································· 9分
22. （本题6分）
解：（1） 2 (a 2) + (b 2) 2(a b 4) 2a + 2b 8 m
所以所需栅栏的长度为(2a+2b-8) m。·································3分
（2） 4(b 0.1b) 2 a 0.1a 4 0.9b 2 0.9a 3.6b 1.8a m
所以所需栅栏的长度为(3.6b+1.8a)m。·································6分
2
23. （本题8分）
解：（1）-2；············································································1分
（2）点B在数轴上的位置如图；
...................................... 2分
2.5 1（或 2 ）；................................................................................... 3分
2
（3）-4或0；................................................................................................5分
（4）①-3；..................................................................................................6分
②6或0。..............................................................................................8分
3

展开更多......

收起↑