Test: Exponents And Powers- 1
10 Questions MCQ Test NCERT Mathematics for CAT Preparation | Test: Exponents And Powers- 1
(−2)5÷ (−2)8 = ?
Write the expression using exponents: 61 × 61 × 61 × 61 × 61
Answers is 61^5 because 61 is multiplied 5 times
Find the value of x, if 32 = 2x.
Factorisation of 32 is 2 x 2 x 2 x 2 x 2
32 = 25
X = 5
The repeated factor in an exponential expression is called ____.
An expression that represents repeated multiplication of the same factor is called a power. The exponent corresponds to the number of times the base is used as a factor.
A group of students were given an assignment to collect different types of leaves. The group collected32 types of leaves. Represent the number of leaves collected in the form of exponential expression with its base being indivisible.
25 = 2 x 2 x 2 x 2 x 2
2 x 2 = 4
4 x 2 = 8
8 x 2 = 16
16 x 2 = 32
Find the value of the expression a2 for a = 10.
Multiply 10 twice i.e 10 × 10 because they asked 'a' to the power 2 . so multiply by twice, the solution is 100 .
Evaluate the exponential expression (−b)4 × (−b)5, for b = 4.
(-b)4= (-44) =(-4 × -4) × (-4 × -4)
=16×16 (as -×-=+) =256
(-b)5=1024
so, -1024 × 256 = -262144
When we have to add numbers in standard form, we convert them into numbers with the ________ exponents.
For example , 2.38 x 104 + 21.1 x 103 = 2.38 x 104 + 2.11 x 104 = 4.49 x 104
Simplify and write in exponential form: (−2)−3 × (−2)− 4
(-2)-3*(-2)-4 = (-2)(-3)+(-4) = (-2)(-7)
Evaluate: 82
82 = 8 x 8 = 64
 |
Use Code STAYHOME200 and get INR 200 additional OFF
|
Use Coupon Code |
Download free EduRev App
Similar Content
|
|
|
|
Related tests
|
|
|
|
|
|
© EduRev
|
Follow Us
|