Plug into possibility
Add new features or connect your favorite tools with thousands of plugins — available on all paid WordPress.com plans.
arithmetic
3 plugins
Easy CalculatorA plug-in to insert a calculator at anywhere in your Wordpress site for easy calculations.
LazyCaptchaLazyCaptcha is a small and lazy plugin to prevent bots from spamming your comments.
Makuruwan Arithmetic Human QuizHuman-verification math quiz for login and forms. No Google reCAPTCHA.