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  1. Scientific Calculator - GeoGebra

    Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!

  2. Omni Calculator

    Omni Calculator provides solutions for a wide range of problems, from finance and business to health. It’s so fast and easy you won’t want to do the math again!

  3. Math Calculator

    Aug 1, 2025 · Free online math calculator to add, subtract, multiply and divide positive and negative numbers. Online decimal calculator to find sum, difference and products of numbers.

  4. Simple Calculator

    We provide you with easy to use calculator for the simplest mathematical operations: addition, subtraction, multiplication, division

  5. 11 Facts About the Number 40 You Never Knew - Reader's Digest

    Jun 20, 2025 · We combed through popular culture, literature and history for the most fascinating facts about 40, so you could decide for yourself. Read on, and get ready to have a new favorite number.

  6. 40 (number) - Wikipedia

    The number 40 is found in many traditions without any universal explanation for its use. In Jewish, Christian, Islamic, and other Middle Eastern traditions it is taken to represent a large, approximate …

  7. Forty or Fourty: How do you spell 40? | Merriam-Webster

    The number 40 is spelled forty despite the fact that four contains a u. Even though it is often misspelled fourty, the only widely accepted spelling of the number is forty.

  8. American Top 40 - iHeart

    American Top 40 Podcasts On Air with Ryan Seacrest Did you miss today’s Ryan’s Roses? Or Second Date Update? Or celebrity interview? Listen to the entire show here every day with Ryan Seacrest, …

  9. How to Spell Out “40”: “Forty” or “Fourty”? | Grammarly

    Jun 21, 2023 · The number 40 (forty) is correctly spelled forty. Fourty is a misspelling, however common. Not all style guides require writing out numbers over ten.

  10. Number 40 - Curious Math Facts and Interesting Properties

    Explore the hidden side of 40, an even number composed of two distinct primes multiplied together. Includes Prime Factorization, Divisors, Bases and Much More! A fascinating math reference for …