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3rd-5th Grade Math: Practice & Review37 chapters | 252 lessons

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Instructor:
*Audrey Akins*

Audrey has more than a decade of experience teaching elementary. She has a bachelor's in journalism and a master's in education.

Multiplication is a skill that can help you save time when you're adding large or small groups of numbers together. This lesson will focus on completing multiplication number sentences when different parts are missing.

To get started, first you should know that the parts of the multiplication number sentence are the multiplicand, multiplier, and the product. The **multiplicand** is the first number. The **multiplier** is the second number, and the **product** is the answer.

Let's look at some different types of multiplication number sentences and learn how to complete them.

For this lesson, let's pretend you're making baskets of cookies to give away. If you had a total of 18 cookies and wanted to give baskets of cookies away with 9 cookies in each basket, you would need to know how many baskets you could make.

Your number sentence would look like this: ___ x 9 = 18. If the first number is missing, divide the last number by the second number to get the number you need to complete the multiplication number sentence.

In this number sentence, 2 completes it, so you could make two baskets of cookies. You could also skip count by the smallest number, which is 9, up to the biggest number, 18. It would look like this: 9, 18. From there, count how many numbers you have, which is 2. Your answer is still 2.

Another time you're making baskets of cookies, you know you want to make 3 baskets and that you have 15 cookies, but this time you need to know how many cookies to put in each basket. Your number sentence looks like this: 3 x ___ = 15.

When the second number is missing, you can use almost the same exact process you used in the earlier example. You can divide the last number by the first number. The answer, 5, will complete this number sentence. So you would put 5 cookies in each basket.

Skip counting by the smallest number, 3, up to the biggest number, 15, is also an option. You would get 3, 6, 9, 12, 15. Then count how many numbers you have. Your answer is still 5.

The last time you make baskets of cookies, you know that you want to make 6 baskets with 4 cookies in each. So now you need to determine the amount of cookies you need to bake. Your number sentence is 6 x 4 = ___.

When the last number is missing, you have to solve to get the product. Solve by multiplying the first two numbers together. This will complete the number sentence. The answer is 24 because when you use repeated addition, you get 6 + 6 + 6 + 6 = 24. In this case, you would need to bake 24 cookies.

In multiplication number sentences, the **multiplicand** is the first number, the **multiplier** is the second number, and the **product** is the answer.

Remember that if the first or second number is missing, divide the two numbers you have (the last number divided by either the first or second number) to get the answer. You also can skip count by the smallest number up to the biggest number and then count how many numbers you have.

If the last number in the number sentence is missing, multiply the two existing numbers or use repeated addition to get the last number.

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3rd-5th Grade Math: Practice & Review37 chapters | 252 lessons

- Go to Addition

- Go to Subtraction

- How to Perform Multiplication: Steps & Examples 5:22
- How to Multiply One-Digit Numbers
- Using Mental Math for Multiplication 4:44
- Learning Multiplication Facts to 10 Using Commutative Property
- Learning Multiplication Facts to 10 Using Rectangular Array 4:02
- Learning Multiplication Facts to 10 Using Skip Counting
- Learning Multiplication Facts to 10 Using Doubling
- Learning Multiplication Facts to 10 Using Finger Tricks
- Multiplying a Two-Digit Number by a One-Digit Number
- How to Multiply Three or More Numbers
- How to Multiply Numbers Ending in Zeroes 2:56
- How to Complete the Multiplication Sentence
- Working with Multiplication Input-Output Tables
- The Relationship Between Multiplication & Division
- Go to Multiplication

- Go to Division

- Go to Angles

- Go to Money

- Go to Time

- Go to Integers

- Go to Percents

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