12

Q1. 27¹² can also be expressed as ______

• 3³⁶
• 6¹²
• 3⁴²
• 9¹⁰

Solution

(27)¹² = (3³)¹² = 3³⁶

Q2. 1 micron is equal to _______ expressed in meters

• 10^-9
• 10^-4
• 10^-6
• 10^-5

Solution

10^-6

Q3. 146.3042 when written in the standard form will involve a factor of 10 raised to the power ______ .

• 3
• 2
• 4
• 1

Solution

146.3042 = 1.463052  10²

Q4. For what value of k, 3^k+1 x 27² = 9⁴ is true?

• 2
• 3
• -1
• 1

Solution

The given expression can be simplified as

Q5. 13¹² is read as 13 ______ to the power 12.

• high
• raised
• more
• height

Solution

raised

Q6. a^-m is the ______ inverse of a^m.

• additive
• multiplicative
• commutative
• distributive

Solution

multiplicative

Q7. Very large numbers can be expressed in the standard form by using ______ exponents.

• positive
• negative
• Both positive and negative
• zero

Solution

positive

Q8. (b³)² = _______ .

• b¹²
• b⁵
• b⁶
• b³

Solution

(b)^2x3 = (b)⁶

Q9. When very small numbers are expressed in standard form, then the exponents are ______

• positive
• negative
• both positive and negative
• zero

Solution

negative

Q10. 25000 =

• 2.5 x 10⁴
• 2.5 x 10³
• 2.5 x 10^-4
• 2.5 x 10⁵

Solution

2.5 x 10⁴