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Published on: 16/06/2021
QB365 provides detailed and simple solution for every book back questions in class 7 Maths subject.It will helps to get more idea about question pattern in every book back questions with solution.
Download Tamil Nadu 7th Standard Maths question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Maths Test1.
The two adjacent sides of a rectangle are 2x2 − 5xy + 3z2 and 4xy − x2 − z2 . Find the perimeter and the degree of the expression.
2.
Find the value of w, given that x = 3 , y = 4 , z = −2 and w = x2 − y2 + z2 − xyz .
3.
LEADERS is a WhatsApp group with 256 members. Every one of its member is an admin for their own WhatsApp group with 256 distinct members. When a message is posted in LEADERS and everybody forwards the same to their own group, then how many members in total will receive that message?
4.
Add and find the degree of the following expressions.
(9x + 3y) and (10x − 9y)
5.
Find the degree of the following terms.
5x2
1.
Perimeter of Rectangle
= 2(l + b)
Degree of 2x2 = 2
Degree of - 2xy = 2
Degree of 4z2 = 2
Degree of Expression = 2
2.
X = 3,y = 4, Z = -2
w = x2 - y2 + z2 - xyz
= (3)2 - (4)2 + (-2)2 -3 x 4 x (-2)
= 9 - 16 + 4 + 24 = 21
3.
Total number of members in LEADERS
Whats App group = 256
Number of members in their own WhatsApp group = 256
Total Number of members receive the message
= 256 + 256 + .... + 256 (256 times)
= 256 x 256 = 65
4.
(9x + 3y) and (10x - 9y) ,
(9x + 3y)+ (10x - 9y) = (9x + 10x) + (3y- 9y)
[grouping like terms]
= (9 + 10) x + (3 - 9)y
= 19x - 6y
5.
Degree 2
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Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards
