Sal explains multiplying and dividing positive and negative numbers.

Review the basic of multiplying negative numbers and try some practice ... Multiplying & dividing negative numbers ... Dividing positive and negative numbers.

Learn some rules of thumb for multiplying positive and negative numbers. ... Multiplying & dividing negative numbers ... Practice: Multiplying negative numbers.

https://www.mathsisfun.com/multiplying-negatives.html

The signs are − and + (a negative sign and a positive sign), so they are unlike signs (they are ... Why does multiplying two negative numbers make a positive?

https://www.mathplanet.com/education/pre-algebra/explore-and-understand-integers/multiplying-and-dividing-with-integers

You also have to pay attention to the signs when you multiply and divide. There are two simple rules to remember: When you multiply a negative number by a ...

https://www.bbc.com/bitesize/guides/z77xsbk/revision/3

Learn about and revise positive and negative numbers and how to add and subtract or multiply and divide them with BBC Bitesize KS3 Maths.

https://www.purplemath.com/modules/negative3.htm

Explains how to multiply and divide with negative numbers. Includes worked examples demonstrating how to take a negative through parentheses, with hints on ...