Rational or irrational?
Rational or irrational?
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Total answers
Is this number rational or irrational?
√2
What does the generator do?
It shows integers, fractions, terminating decimals, square roots (of perfect and non-perfect squares) and π, and asks you to classify each.
How to solve
A number is rational if it can be written as a fraction of whole numbers — this includes roots of perfect squares. Roots of non-perfect squares and π are irrational.
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- Evaluating expressions
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- Equivalent Expressions
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- Expanding Parentheses
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- Multiplying Binomials
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- Integer expressions (order of operations)
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- Inequalities - Mixed Problems
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- Inequalities with Parentheses
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- Least common multiple (LCM)
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- Length: convert down
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- Length: convert up
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- Imperial units – larger to smaller
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- Imperial units – smaller to larger
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- Unknown on Both Sides with Fractions
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- exercises.prima-13-remainder-error.title
- exercises.prima-14-strike-out-digits.title
- exercises.prima-15-tallest-building.title
- exercises.prima-16-hidden-digits.title
- exercises.prima-17-number-line-mark.title
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- Rule of three — direct and inverse proportion
- Word problems — subtraction
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