Solving problems with rational numbers in fraction form

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Examples
Lessons
  1. Estimate and calculate.
    1. 45\frac{4}{5}- 56\frac{5}{6}
    2. -23\frac{2}{3}- (−56)\left( { - \frac{5}{6}} \right)
    3. -38\frac{3}{8} + (−14)\left( { - \frac{1}{4}} \right)
    4. - 25\frac{2}{5} + (−37)\left( { - \frac{3}{7}} \right)
    5. 149\frac{4}{9} + (−123)\left( { - 1\frac{2}{3}} \right)
    6. 114\frac{1}{4} - 218\frac{1}{8}
    1. -113\frac{1}{3}÷ (−213)\left( { - 2\frac{1}{3}} \right)
    2. -314\frac{1}{4} ÷ 112\frac{1}{2}
    3. -59\frac{5}{9} ÷ 712\frac{7}{{12}}
    4. -16\frac{1}{6}× (−37)\left( { - \frac{3}{7}} \right)
    5. 115\frac{1}{5} ÷ 116\frac{1}{6}
    6. 58\frac{5}{8}(−49)\left( { - \frac{4}{9}} \right)
  2. Sam had $45 in his bank account. He first withdrew 15\frac{1}{5} of his saving. Then he took 18\frac{1}{8} out from his remaining money. How much money is still left in his bank account?
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    Practice
    Topic Notes
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    Similar to the previous section, we will practice adding, subtracting, multiplying, and dividing rational numbers. Rational numbers can be expressed in two forms: fraction form and decimal form. This time, we will deal with rational numbers in fraction form.