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.

Sal introduces decimal numbers and understanding place value to the right of the decimal.

Practice Subtracting decimal numbers Learn Strategies for subtracting basic decimals

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 …

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 …

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Learn Decimals as words Relating decimals and fractions in words Decimal place value

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 …

Make sense of decimal subtraction Estimate and subtract Addition and subtraction Multiply decimals and whole numbers Use whole number facts Use properties to multiply decimals Products in the …

Sal was doing 21/16, and made it 21.0000/16 We add the zeroes on the quotient number just in case the division results in more digits in the answer. Appending a 0 to the end of a decimal doesn't change …