Exercise 12A
Question 1
1. Write the exponential form of each expression.
(i) $5 \times 5 \times 5 \times 5 \times 5$
(ii) $-7 x-7 x-7 x-7$
(iii) $\frac{3}{4} \times \frac{3}{4} \times \frac{3}{4} \times \frac{3}{4} \times \frac{3}{4}$
Question 2
2. Find the values of
(i) $4^{4}$
(ii) $(-8)^{3}$
(iii) $\left(\frac{3}{5}\right)^{2}$
(iv) $\left(-\frac{4}{5}\right)^{3}$
(v) $(-2)^{9}$
3. Write the following numbers as power of 7 .
(i) 7
(ii) 49
(iii) 343
(iv) 2401
4. Simplify.
(i) $(-4)^{3} \times(-1)^{8} \times 3^{2}$
(ii) $\left(\frac{3}{5}\right)^{2} \times\left(-\frac{1}{3}\right)^{3} \times 2^{4}$
(iii) $3^{4}+4^{3}+5^{2}$
Multiple Choice Question (MCQ)
Tick (✔) the correct option.
5. Write the prime factorisation of 864 in exponential form.
(a) $2^{4} \times 3^{3}$
(b) $2^{5} \times 3^{4}$
(c) $2^{5} \times 3^{3}$
(d) $2^{4} \times 4 \times 3^{3}$
No comments:
Post a Comment