# Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.

### Popular Tutorials in Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.

#### What are the Commutative Properties of Addition and Multiplication?

The commutative property is a fundamental building block of math, but it only works for addition and multiplication. This tutorial defines the commutative property and provides examples of how to use it.

#### What are the Associative Properties of Addition and Multiplication?

The associative property is one of those fundamental properties of math that make math work. You probably take this property for granted because it's so ingrained, but it's important to see how the guts of math work, so check out the tutorial and make sure you're solid on your fundamentals!

#### How Do You Use Front-End Estimation to Estimate a Sum of Several Decimals?

Front-end estimation can be a great way to approximate a sum. In this tutorial, you'll see how to use front-end estimation to approximate the cost of school supplies!

#### How Do You Estimate a Sum of Decimals by Clustering?

If you want to find the approximate sum of decimals, you can round those numbers first! This tutorial shows you how to round decimals and see what numbers they're close to in order to make adding easier.

#### How Do You Regroup Numbers to Add Decimals Mentally?

Adding numbers mentally is easier than you might think! It can be a quick and fun skill! This tutorial shows you how to take decimals and add them mentally.

#### How Do You Multiply a Decimal by a Whole Number?

If you want to multiply a decimal by a whole number, just ignore the decimal point and multiply like normal! Then, bring the decimal point back for the answer. This tutorial shows you the entire process step-by-step.

#### How Do You Multiply a Decimal by a Whole Number Using Estimation to Place the Decimal?

When you multiply a decimal and a whole number, removing the decimal point can make multiplying easier, but where does the decimal point go when you want to get your answer? In this tutorial, you'll see how to estimate the location of the decimal point after you multiply!

#### How Do You Solve a Word Problem by Dividing with Decimals and Rounding Your Answer Up?

You never know where division might pop up! This word problem is a great example of using long division to solve a problem.