Multiply numbers ending in zeroes: word problems

Learning Objectives Identify key information and the operation needed in word problems involving multiplication. Apply the shortcut method for multiplying numbers ending in zeroes. Solve single and multi-step word problems that require multiplying numbers ending in zeroes. Estimate products of numbers ending in zeroes to check for reasonableness. Interpret the product in the context of a word problem and state the answer with appropriate units. Formulate multiplication expressions from word problems involving numbers ending in zeroes. Ever wondered how many cookies a bakery makes in a month if they bake 200 every day? 🍪 Let's find out how to solve big problems easily! In this lesson, you'll learn a super-fast trick to multiply numbers that end in zeroes, especial...

TermDefinitionExample Word ProblemA mathematical problem presented in a story or real-life scenario format, requiring you to identify the numbers and operations needed to find a solution.If a box has 12 pencils, how many pencils are in 5 boxes? MultiplicationA mathematical operation that represents repeated addition of the same number. It is used to find the total when you have a certain number of equal groups.3 x 4 = 12 (which is 3 + 3 + 3 + 3) FactorA number that is multiplied by another number to get a product.In 5 x 7 = 35, both 5 and 7 are factors. ProductThe result obtained when two or more numbers are multiplied together.In 5 x 7 = 35, 35 is the product. Trailing ZeroesZeroes that appear at the end of a whole number. These are important when using multiplication shortcuts.In the nu...

Shortcut for Multiplying Numbers Ending in Zeroes To multiply numbers ending in zeroes: 1. Multiply the non-zero digits of the factors. 2. Count the total number of trailing zeroes in both original factors. 3. Attach that total number of zeroes to the product of the non-zero digits. This rule provides an efficient way to multiply large numbers with trailing zeroes, simplifying calculations and reducing the chance of error. For example, to calculate $40 \times 200$: multiply $4 \times 2 = 8$. Count total zeroes (one from 40, two from 200 = three zeroes). Attach three zeroes to 8, so the answer is 8,000. Steps for Solving Word Problems 1. Read the problem carefully to understand what is being asked. 2. Identify the given numbers and keywords (e.g., 'each', 'total&...