1. Irrational numbers on the number line refer to numbers that cannot be expressed as a fraction or ratio of two integers. Examples include √2, √3, and π. These numbers are non-repeating and non-terminating decimals.
2. Approximate refers to finding an estimation or close value of a number or quantity. This is often done by using rounding or other mathematical techniques to simplify calculations.
3. Perfect squares are numbers that can be expressed as the square of an integer. For example, 4, 9, and 16 are perfect squares because they are the squares of 2, 3, and 4 respectively. They have a unique property that their square roots are also integers.
1. Irrational numbers on the numberline 2. approximate 3. Perfect squares
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