maths.free › Arithmetic › Percents › Introduction to Percents
Introduction to Percents
Introduction to Percents — from OpenStax Prealgebra 2e.
Introduction to Percents
When you deposit money in a savings account at a bank, it earns additional money. Figuring out how your money will grow involves understanding and applying concepts of percents. In this chapter, we will find out what percents are and how we can use them to solve problems.
Сега ти. Никой калкулатор не се урежда този, но парчетата от него са комунтирани. Опитайте един по-долу, или напишете своя собствен.
Символи, използвани тук
Докоснете всеки символ за пълното определение, снимка и какво означава всяка буква в него.
Въпроси, които хората задават
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.
Части на тази страница са адаптирани от OpenStax Prealgebra 2e (CC BY-NC-SA 4.0). Тук е обяснено и обяснява, грешките са наши. Тъй като източникът му е лицензиран за некоммерчески употреба, този урок е безплатен, не продава нищо и се споделя по същата лицензия.