Solving problems with rational numbers in decimal form

Solving problems with rational numbers in decimal form

In this lesson, we will learn how to work with rational numbers in decimal form. We will look at questions on adding, subtracting, multiplying, and dividing rational numbers.
Basic concepts: Adding and subtracting decimals, Multiplying decimals, Dividing decimals , Order of operations (PEMDAS),
Related concepts: Understanding the number systems, Rational vs. Irrational numbers, Converting repeating decimals to fractions,

Lessons

  • 1.
    Estimate and calculate
    a)
    -2.42 + (-6.53)

    b)
    -0.37 - (-4.61)

    c)
    7.36 - 3.41

    d)
    1.47 + (-5.92)

  • 2.
    Estimate and calculate.
    a)
    -4.75 ÷ 1.9

    b)
    2.5 × (-6.4)

    c)
    -8.6 ÷ (-1.3)

    d)
    -3.3 × (-3.3)

  • 3.
    In a winter day, the temperature at 9:00 a. m. is -5.7 °C and 3.8 °C at 2:00 p.m. Find:
    a)
    the change in temperature.

    b)
    average rate of change in temperature.

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2.
Rational Numbers
2.1
Comparing and ordering rational numbers
2.2
Solving problems with rational numbers in decimal form
2.3
Solving problems with rational numbers in fraction form
2.4
Determine square roots of rational numbers
NZ Year 10 Maths
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