Multiplication facts up to 12: find the missing factor

Learning Objectives Define and identify the terms 'factor' and 'product' in a multiplication equation. Use the relationship between multiplication and division to find a missing factor. Solve equations with a missing factor represented by a symbol or letter (e.g., 4 x ? = 24). Use known multiplication strategies, like skip counting, to determine an unknown factor. Explain the strategy they used to find a missing factor in a given multiplication equation. Create a simple real-world story problem that involves finding a missing factor. If you have 30 stickers to put into a sticker book, and each page holds 5 stickers, how can you figure out how many pages you'll need? 🌟 In this lesson, we'll become math detectives! We will learn how to find the...

TermDefinitionExample FactorA number that is multiplied by another number to get a product.In the equation 3 x 8 = 24, both 3 and 8 are factors. ProductThe answer you get when you multiply two or more numbers together.In the equation 3 x 8 = 24, the product is 24. Multiplication EquationA math sentence that shows two factors being multiplied to equal a product.5 x 6 = 30 is a multiplication equation. Missing FactorThe unknown number in a multiplication equation that you need to find.In 7 x ? = 42, the '?' is the missing factor. Fact FamilyA group of related multiplication and division facts that use the same three numbers.For the numbers 5, 8, and 40, the fact family is 5 x 8 = 40, 8 x 5 = 40, 40 ÷ 5 = 8, and 40 ÷ 8 = 5. Inverse OperationAn operation that 'undoes' anot...

The Missing Factor Rule (using Division) If `a \times ? = c`, then `? = c \div a` To find a missing factor, you can use the inverse operation, which is division. Divide the product (the total) by the factor you know. The Commutative Property of Multiplication `a \times b = b \times a` This property tells us that you can switch the order of the factors and the product will stay the same. This is helpful if you know a fact one way but not the other (e.g., if you don't know 8 x 3, you might know 3 x 8). Identity Property of Multiplication `a \times 1 = a` Any number multiplied by 1 is that same number. If the product is the same as the known factor, the missing factor must be 1.