5 Marks Questions

Question 15 Marks

Which of the following rational numbers are equal?
(i) $\frac{-9}{12}$ and $\frac{8}{-12}$
(ii) $\frac{-16}{20}$ and $\frac{20}{-25}$
(iii) $\frac{-7}{21}$ and $\frac{3}{-9}$
(iv) $\frac{-8}{-14}$ and $\frac{13}{21}$

Answer

(ii),(iii)

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Question 25 Marks

Select those rational numbers which can be written as a rational number with numerator 6: $\frac{1}{22}, \frac{2}{3}, \frac{3}{4}, \frac{4}{-5}, \frac{5}{6}, \frac{-6}{7}, \frac{-7}{8}$

Answer

$\frac{1}{22}, \frac{2}{3}, \frac{3}{4}, \frac{-6}{7}$

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Question 35 Marks

Select those rational numbers which can be written as a rational number with denominator :$\frac{6}{8}, \frac{64}{16}, \frac{36}{-12}, \frac{-16}{17}, \frac{5}{-4}, \frac{140}{28}$

Answer

$\frac{7}{8}, \frac{64}{16}, \frac{36}{-12}, \frac{5}{-4}, \frac{140}{28}$

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Question 45 Marks

Separate positive and negative rational numbers from the following rational numbers:$\frac{-5}{-7}, \frac{12}{-5}, \frac{7}{4}, \frac{13}{-9}, 0, \frac{-18}{-7}, \frac{-95}{116}, \frac{-1}{-9}$

Answer

Positive: $\frac{-5}{-7}, \frac{7}{4}, \frac{-18}{-7}, \frac{-1}{-9}$
Negative: $\frac{12}{-5}, \frac{13}{-9}, \frac{-95}{116}$

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Question 55 Marks

Write the following rational numbers as integers: $\frac{7}{1}, \frac{-12}{1}, \frac{34}{1}, \frac{-73}{1}, \frac{95}{1}$

Answer

7,-12,34,-73,95

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