Rational Numbers MATHS - Rational Numbers

• A
  12
• B
  -12
• C
  48
• ✓
  -48

Answer: D.

• ✓
  $\left[\frac{-1}{4} \times \frac{2}{5}\right]+\left[\frac{-1}{4} \times\left(\frac{-5}{6}\right)\right]$
• B
  $\left[\frac{-1}{4} \times \frac{2}{5}\right]-\left(\frac{-5}{6}\right)$
• C
  $\frac{2}{5}+\left(\frac{-1}{4}\right) \times\left(\frac{-5}{6}\right)$
• D
  $\left[\frac{2}{5}+\left(\frac{-5}{6}\right)\right]-\frac{1}{4}$

Answer: A.

• ✓
  $\frac{4}{5} \times\left(\frac{-6}{7} \times \frac{8}{9}\right)=\left(\frac{4}{5} \times \frac{-6}{7}\right) \times \frac{8}{9}$
• B
  $\frac{4}{5} \times\left(\frac{-6}{7} \times \frac{8}{9}\right)=\frac{4}{5} \times\left(\frac{8}{9} \times \frac{-6}{7}\right)$
• C
  $\frac{4}{5} \times\left(\frac{6}{7} \times \frac{8}{9}\right)=\left(\frac{8}{9} \times \frac{4}{5}\right) \times \frac{-6}{7}$
• D
  $\left(\frac{4}{5} \times \frac{-6}{7}\right) \times \frac{8}{9}=\left(\frac{-6}{7} \times \frac{4}{5}\right) \times \frac{8}{9}$

Answer: A.

• A
  0,1
• B
  $-1,0$
• ✓
  $-1,1$
• D
  $-1,0$

Answer: C.

• A
  is a positive rational number
• ✓
  is a negative rational number
• C
  can be either a positive or a negative rational number
• D
  does not exist

Answer: B.