Solving problems with rational numbers in fraction form

Lessons

• 1.
  Estimate and calculate.
  a)

  $\frac{4}{5}$- $\frac{5}{6}$
  
  
  b)

  -$\frac{2}{3}$- $\left( { - \frac{5}{6}} \right)$
  
  
  c)

  -$\frac{3}{8}$ + $\left( { - \frac{1}{4}} \right)$
  
  
  d)

  - $\frac{2}{5}$ + $\left( { - \frac{3}{7}} \right)$
  
  
  e)

  1$\frac{4}{9}$ + $\left( { - 1\frac{2}{3}} \right)$
  
  
  f)

  1$\frac{1}{4}$ - 2$\frac{1}{8}$
  
  

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• 2.
  a)

  -1$\frac{1}{3}$÷ $\left( { - 2\frac{1}{3}} \right)$
  
  
  b)

  -3$\frac{1}{4}$ ÷ 1$\frac{1}{2}$
  
  
  c)

  -$\frac{5}{9}$ ÷ $\frac{7}{{12}}$
  
  
  d)

  -$\frac{1}{6}$× $\left( { - \frac{3}{7}} \right)$
  
  
  e)

  1$\frac{1}{5}$ ÷ 1$\frac{1}{6}$
  
  
  f)

  $\frac{5}{8}$$\left( { - \frac{4}{9}} \right)$
  
  

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• 3.
  Sam had $45 in his bank account. He first withdrew $\frac{1}{5}$ of his saving. Then he took $\frac{1}{8}$ out from his remaining money. How much money is still left in his bank account?

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