
Decimals | Arithmetic (all content) | Math | Khan Academy
In this topic, we will learn what a decimal is and how to show it visually and on a number line. We will also add, subtract, multiply, and divide with decimals.
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Adding decimals with ones and tenths parts - Khan Academy
Learn how to add decimals, specifically to the tenths. Practice adding whole numbers first, then adding the decimal parts. Learn the concept of carrying over in decimal addition.
Decimal system refresher | AP CSP (video) | Khan Academy
Review how the decimal number system works before diving into the binary number system. The decimal number system and binary number system work the same way; the only difference is what …
Multiplying decimals example (video) | Khan Academy
To figure out where the decimal belongs in your answer, put your fingers on each decimal in the numbers you multiplied together. Then, trace the decimals until your fingers meet at a corner in the …
Place value with decimals (video) | Khan Academy
Place value and decimals are related. We can begin by reviewing the concept of ones, tens, and hundreds places, and then demonstrates how tenths, hundredths, and thousandths places work. By …
Understand decimals: FAQ (article) | Khan Academy
How do I compare two decimals? To compare two decimals, we can look at the whole numbers before the decimal point. If one of these is larger, we know that number is larger overall. If the whole …
Writing decimals and fractions shown on number lines
Decimals are categorized into three main types based on whether the digits after the decimal point end or continue indefinitely, and if they repeat.
Square root of decimal (video) | Radicals | Khan Academy
Learn how to find the square root of a decimal number. The problem solved in this video is p^2 = 0.81.
Understanding decimal multiplication (video) | Khan Academy
This video introduces multiplying decimals, emphasizing the role of decimal placement in the product. It highlights the usefulness of estimation in simplifying calculations and understanding the relationship …