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Published on: 13/12/2019
Term 2 Algebra
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.
Simplify using quotient rule of exponents.
\(\frac { { 6 }^{ 4 } }{ { 6 }^{ 0 } } \)
2.
Expand a3b2 and a2b3. Are they equal?
3.
Which is greater 34 or 43?
4.
Express the following numbers in exponential form with the given base:
512, base 2
5.
Express the following numbers in exponential form with the given base:
1000, base 10
6.
Simplify the following.
52 x104
7.
Express each of the following numbers using exponential form.
343
8.
Express each of the following numbers using exponential form.
512
9.
Find the value of the following.
93
10.
Find the value of the following.
54
11.
If p(x) and q(x) are two expressions of degree 3, then the degree of p(x) + q(x) is
6
0
3
Undefined
12.
The degree of 6x7−7x3 + 4 is
7
3
6
4
13.
The unit digit of (32 x 65)0 is
2
5
0
1
14.
Observe the equation (10 + y)4 = 50625 and find the value of y.
1
5
4
0
15.
The exponential form of 72 is
72
27
22 x 33
23 x 32
16.
Find the unit digit of the large numbers:
912
17.
Find the unit digit of the large numbers:
6410
18.
Find the unit digit of the following exponential numbers:
81100
19.
Find the unit digit of the following exponential numbers:
2523
1.
\(\frac { { 6 }^{ 4 } }{ { 6 }^{ 0 } } \) = 64-0 = 64 (or) \(\frac { { 6 }^{ 4 } }{ { 6 }^{ 0 } } \)=\(\frac { { 6 }^{ 4 } }{ 1 } \) = 64 [since 60 = 1]
2.
a3b2 = (a x a x a) x (b x b)
a2b3 = (a x a) x (b x b x b)
Therefore, a3b2 ≠ a2b3
3.
34 = 3 x 3 x 3 x 3 = 81
43 = 4 x 4 x 4 = 64
81> 64 gives 34 > 43
Therefore, 34 is greater.
4.
512 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 29
5.
1000 = 10 x10 x10 = 103
6.
5 x 5 x 10 x 10 x 10 x 10
25 x 10000 = 250000
7.
8.
9.
9 x 9 x 9 = 729
10.
5 x 5 x 5 x 5 = 625
11.
(c)
3
12.
(a)
7
13.
(d)
1
14.
(b)
5
15.
(d)
23 x 32
16.
912
Unit digit of base 9 is 9 and power is 12 (even power).
Therefore, unit digit of 912 is 1.
17.
6410
Unit digit of base 64 is 4 and power is 10 (even power). Therefore, unit digit of 6410 is 6.
18.
81100
Unit digit of base 81 is 1 and power is 100
Thus, the unit digit of 81100 is 1.
19.
2523
Unit digit of base 25 is 5 and power is 23
Thus, the unit digit of 2523 is 5.
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Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards
