Solve two-step percent problems with a single multiplication. By reviewing how to find the percent of a problem, the video introduces the idea of finding multipliers to find solutions for increasing or decreasing percent problems. Pupil...

Here is a great video explaining multiplying a fraction by a whole number. Sal shows students how to put a whole number over 1 to multiply it by a fraction. He simplifies his answer and writes it as a mixed number.

Sal takes out the big guns—or, in this case, the big calculator—in this video, which takes the concept of significant figures even further. Sal shows how to multiply and divide significant figures using electronic and handwritten...

Occasionally, in mathematics, there are "shortcuts" one can take. Sal explains a quick way to divide decimal numbers. He demonstrates that in some instances, simply shifting the decimal point to the left will result in a correct answer.

This video demonstrates how to write a decimal as a fraction and explains why it works. The concept is explained well and presented clearly and straightforwardly. Great for third or fourth graders.

Complete a quick conversion. Pupils view the short video to learn the process to convert a decimal to a percent. The scholars then practice the skill with two worksheets, giving them a chance to better understand the concept.

There are two percentage concepts covered in an informative video. The first is how to find a given percent of a given number; the second concept shows learners how to find a number when the percent is given. Sal finishes by...

Sal adds a few more steps to these problems as he solves algebraic equations with two steps, though he states that "there's more than one way to do it." Those who become confused by increasingly complicated algebra problems on a test...

Sal uses place value and equivalent fractions to multiply decimals.

A complete lesson about multiplying decimals by decimals. Video explains the rule for multiplying decimals with examples and practice exercises. [6:16]

Sal uses place value and equivalent mixed numbers to multiply decimals.

Learn about the patterns that develop when multiplying and dividing decimals by 10, 100, and 1000.

Demonstrates how to multiply decimals to the thousandths place using the example of 1.21 x 0.043. [4:25]

Learn to multiply and divide decimals by 10 using fraction and place value understanding.

Sal multiplies and divides decimals by powers of 10.