八年级上册数学作业本答案
第一单元：整数与有理数
1.1 整数
1. 10 2. -6 3. 8 4. -2 5. 4 6. 0 7. The sum is -15. 8. The difference is 3. 9. The product is -72. 10. The quotient is -4.
1.2 有理数
1. The opposite of 3.4 is -3.4. 2. The absolute value of -6 is 6. 3. The opposite of -0.8 is 0.8. 4. The absolute value of -12 is 12. 5. The opposite of 7.3 is -7.3. 6. The opposite of -5 is 5. 7. The absolute value of -2.5 is 2.5. 8. The opposite of 1.6 is -1.6. 9. The absolute value of -9 is 9. 10. The opposite of -0.1 is 0.1.
第二单元：平面图形
2.1 点、线、面
1. Point 2. Line 3. Plane 4. Point 5. Line 6. Plane 7. Point 8. Line 9. Plane 10. Point
2.2 四边形与三角形
1. Triangle 2. Quadrilateral 3. Triangle 4. Quadrilateral 5. Triangle 6. Quadrilateral 7. Triangle 8. Quadrilateral 9. Triangle 10. Quadrilateral
第三单元：代数基础
3.1 代数表达式
1. 20x 2. 7y 3. 5m 4. 8n 5. 3p 6. 6x 7. 4y 8. 2m 9. 9n 10. 10p
3.2 代数方程与实际问题
1. x + 5 = 12 x = 7 2. 4 + a = 9 a = 5 3. y - 6 = 10 y = 16 4. b - 8 = 3 b = 11 5. m + 7 = 15 m = 8 6. 3 + n = 11 n = 8 7. p + 4 = 12 p = 8 8. 6 - q = 1 q = 5 9. 10 - r = 3 r = 7 10. s - 2 = 9 s = 11
这是八年级上册数学作业本的部分答案，希望能对你的学习有所帮助。记得在解答问题时，仔细阅读题目，理解题意，列出方程或代数表达式，并进行逐步计算。祝你数学学习进步！版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容， 请发送邮件至3237157959@qq.com 举报，一经查实，本站将立刻删除。