💣 Q :84 Prep 1 Question Bank T1

a) Find the result of: \(-3.2 + (-1.3)\)

\(-3.2 + (-1.3) = -4.5\) (Adding two negative numbers gives a more negative number)

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b) Find the result of: \(\frac{5}{8} + \left( -\frac{7}{8} \right)\)

\(\frac{5}{8} + \left( -\frac{7}{8} \right) = -\frac{2}{8} = -\frac{1}{4}\) (When denominators are same, subtract numerators)

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c) Find the result of: \(-2.125 + 2.6 + \left( -7 \, \frac{21}{24} \right)\)

\(-2.125 + 2.6 + \left( -7 \, \frac{21}{24} \right)\)
\(= -2.125 + 2.6 - 7.875\) (Convert mixed number to decimal)
\(= (-2.125 - 7.875) + 2.6\)
\(= -10 + 2.6 = -7.4\)

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d) Find the result of: \(60 \, \% + \frac{3}{10} - 0.14\)

\(60 \, \% + \frac{3}{10} - 0.14\)
\(= 0.60 + 0.30 - 0.14\) (Convert all to decimal form)
\(= 0.90 - 0.14 = 0.76\)

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