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Introduction to Fractions
Introduction to Fractions — from OpenStax Prealgebra 2e.
Introduction to Fractions
Often in life, whole amounts are not exactly what we need. A baker must use a little more than a cup of milk or part of a teaspoon of sugar. Similarly a carpenter might need less than a foot of wood and a painter might use part of a gallon of paint. In this chapter, we will learn about numbers that describe parts of a whole. These numbers, called fractions, are very useful both in algebra and in everyday life. You will discover that you are already familiar with many examples of fractions!
Şimdi sen Hiçbir hesap makinesi bu soruyu çözemez, ama parçaları hesaplanabilir. Aşağıdakilerden birini deneyin veya kendinizinkini yazın.
Burada kullanılan sembolleri
Tüm tanım, resim ve her harfin anlamı için herhangi bir sembolü tıklayın.
Sık sorulan sorular
Why does the order of operations matter?
Because 2 + 3 × 4 would otherwise be two different numbers. The convention (brackets, exponents, multiplication and division, addition and subtraction) exists so every reader gets the same value from the same expression.
How do I check an arithmetic answer?
Estimate first (round every number and compute roughly), then compare. If the estimate and the exact answer disagree by more than a little, one of them is wrong. The solver shows every operation, so you can find which line went astray.
Why are fractions harder than decimals?
They are not harder, they are more exact: 1/3 is a precise number, 0.333 is an approximation. Fractions need a common denominator to add, which is the one extra step people trip on.
Parts of this page are adapted from OpenStax Prealgebra 2e (CC BY-NC-SA 4.0). Burada tekrar özetlenmiş ve açıklanmıştır. Hatalar bizim. Kaynağı ticari olmayan kullanım için lisanslanmış olduğu için, bu ders ücretsizdir, hiçbir şey satmaz ve aynı lisans altında paylaşılır.