Real math help.
How Do You Multiply a Three-Digit Number by a One-Digit Number?
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If you want to multiply a three digit number by a one digit number, it can be helpful to line up the multiplication vertically. This tutorial takes you through the process of multiplying!
Background Tutorials
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Use place value understanding to round whole numbers to the nearest 10 or 100.
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What is Place Value for Whole Numbers?
Place value is a building block of numbers. Without place value, we couldn't keep all our numbers straight! This tutorial introduces place value and shows you the parts of a place value chart.
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Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two multi-digit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.
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How Do You Write a Whole Number Given in Standard Form in Expanded Form and in Words?
If you have a number in standard form, you can quickly change it into expanded form or even into words with a few steps! Watch this tutorial to learn the steps needed to change from one form to another.
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Fluently add and subtract multi-digit whole numbers using the standard algorithm.
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How Do You Add Whole Numbers?
To add numbers, you can line up the numbers vertically and then add the matching places together. This tutorial shows you how to add numbers vertically!
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Further Exploration
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Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
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How Do You Multiply a Two-Digit Number by a Two-Digit Number?
When you're multiplying a two digit number by a two digit number, it's important to keep the places lined up correctly. This tutorial helps you practice multiplying while keeping everything organized!
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Fluently multiply multi-digit whole numbers using the standard algorithm.
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How Do You Do Long Multiplication?
Multiplying together large numbers? No problem! In this tutorial, you'll see how to perform long multiplication to find the answer (without using a calculator!). Take a look!
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