Multiply by 1

Learning Objectives State the Identity Property of Multiplication and identify 1 as the multiplicative identity. Multiply any whole number, fraction, or decimal by 1 and predict the product. Recognize that any fraction with the same numerator and denominator (e.g., 7/7) is a form of 1. Use multiplication by a form of 1 to generate equivalent fractions. Apply the concept of multiplying by 1 to solve word problems involving various number types. Verify calculations and identify errors by applying the rule of multiplying by 1. If you have 17 pizzas and I give you 1 time that amount, how many pizzas do you have? 🍕 Let's explore the magic number that doesn't change a thing! In this lesson, you will explore one of the most important rules in all of math: the Identity P...

TermDefinitionExample Identity Property of MultiplicationA rule stating that any number multiplied by 1 will result in that same number. The number's 'identity' does not change.45.2 * 1 = 45.2 Multiplicative IdentityThe number that, when multiplied by any other number, leaves the other number unchanged. In our number system, the multiplicative identity is 1.In the equation 1,289 * 1 = 1,289, the number 1 is the Multiplicative Identity. ProductThe answer or result of a multiplication problem.In 5 * 1 = 5, the number 5 is the product. FactorA number that is multiplied with another number to get a product.In 3/4 * 1 = 3/4, both 3/4 and 1 are factors. A Form of 1Any fraction where the numerator and the denominator are the same non-zero number. These fractions are all equal to 1...

The Identity Property of Multiplication a * 1 = a Use this rule for any number 'a' (which can be a whole number, decimal, or fraction). When you multiply it by 1, the answer is always the original number. The Commutative Property with 1 1 * a = a This shows that the order of multiplication with 1 does not matter. Whether you multiply a number by 1 or 1 by that number, the result is the same. The Rule for a Form of 1 n / n = 1 (where n is not 0) Any non-zero number divided by itself is equal to 1. We use this to create fractions that are forms of 1, which are essential for finding common denominators and equivalent fractions.