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Maths 1 Mark Question

Exponents · Maharashtra Board STD 7 (MSBSHSE - English Medium). 53 questions.

Questions · Page 2 of 2

1 Mark Question

Question 511 Mark
Express the following numbers in standard form:
$82934000000$
Answer

We can write in standard form
$82934000000=8.2934000000 \times 10^{10}$
$=8.2934 \times 10^{10}$
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Question 521 Mark
Write the reciprocal of:
$\Big(\frac{2}{3}\Big)^4$
Answer
We know that the reciprocal of $\Big(\frac{\text{a}}{\text{b}}\Big)^\text{m}\text{ is }\Big(\frac{\text{b}}{\text{a}}\Big)^\text{m}$
Reciprocal of $\Big(\frac{2}{3}\Big)^4=\Big(\frac{3}{2}\Big)^4$
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Question 531 Mark
Write the reciprocal of:
$\Big(\frac{-3}{5}\Big)^{61}$
Answer
We know that the reciprocal of $\Big(\frac{\text{a}}{\text{b}}\Big)^\text{m}\text{ is }\Big(\frac{\text{b}}{\text{a}}\Big)^\text{m}$
Reciprocal of $\Big(\frac{-3}{5}\Big)^{61}=\Big(\frac{-5}{3}\Big)^{61}$
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1 Mark Question - Page 2 - Maths STD 7 Questions - Vidyadip