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- Rational Numbers

Still Confused?

Try reviewing these fundamentals first

Still Confused?

Try reviewing these fundamentals first

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Get Started NowStart now and get better maths marks!

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Get Started Now- Lesson: 14:24
- Lesson: 2a3:54
- Lesson: 2b4:51
- Lesson: 3a5:16
- Lesson: 3b2:03
- Lesson: 3c2:45
- Lesson: 3d1:10
- Lesson: 4a3:40
- Lesson: 4b4:29
- Lesson: 4c4:43
- Lesson: 4d5:33
- Lesson: 5a1:45
- Lesson: 5b0:47
- Lesson: 5c0:45
- Lesson: 5d0:46

In this section, we will look at how to evaluate a rational number by using square roots. We will also work on questions determining whether a rational number is a perfect square. We will also evaluate the square roots of rational numbers.

Related Concepts: Square and square roots, Cubic and cube roots, Evaluating and simplifying radicals

- 1.Use the graph below to determine a rational number with a square root between 4 and 5.

- 2.Use the side lengths below to estimate and calculate the area of each square.a)5.2 cmb)0.027 km
- 3.Find out if each of the following rational numbers is a perfect square.a)$\frac{{81}}{{16}}$b)0.1c)0.01d)$\frac{5}{{14}}$
- 4.Evaluate.a)$\sqrt {361}$b)$\sqrt {2209}$c)$\sqrt {0.0169}$d)$\sqrt {5.76}$
- 5.Calculate.a)$\sqrt {56}$, to the nearest tenthb)$\sqrt {3.7}$, to the nearest hundredthc)$\sqrt {0.96}$ , to the nearest hundredthd)$\sqrt {0.066}$ , to the nearest hundredth

We have over 1110 practice questions in NZ Year 8 Maths for you to master.

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