In this video, you will learn how to find the multiplicative inverse of a number and use it to write equivalent expressions. The multiplicative inverse, also known as the reciprocal, is the number that, when multiplied by the original...

When number systems were expanded to include negative numbers, rules had to be formulated so that multiplication would be consistent regardless of the sign of the operands.

Recognize and apply the additive inverse property.

Recognize and apply the additive inverse property.

This video explains the additive identity property of 0 and the multiplicative identity property of 1. The examples demonstrate how adding 0 or multiplying by 1 does not change the value of a number or expression. The video also shows...

When working with fractions, division can be converted to multiplication by the divisor's reciprocal. This chapter explains why.

Number systems evolved from the natural "counting" numbers, to whole numbers (with the addition of zero), to integers (with the addition of negative numbers), and beyond. These number systems are easily understood using the number line.