Addition with Decimals

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5th Grade Adding 3 Digit Numbers with Decimals GameFifth Grade Add Three Digit Decimal Numbers Game

Interactive Math Practice - Addition with Decimals

In this interactive math lesson, students will practice adding multi-digit numbers with decimals. This decimals addition lesson will help students become proficient in decimal addition skills, including lining up the decimals, adding fractional parts, and adding whole numbers.

Students will be presented with a variety of question types in this adding with decimals lesson. They may be given a word problem, such as: "On average, Columbus, Ohio receives 29.12 inches of snow and Buffalo, New York receives 91.08 inches of snow annually. How many inches of snow do both cities receive annually combined?" Students will also be given horizontal addition problems and vertical addition problems. Here are some examples: "Find the sum of 46.64 and 870.084." and "98.2 + 9.05 =". As evidenced by these examples, students will be expected to align the decimal places before they begin some problems.

5th Grade Adding 3 Digit Numbers with Decimals LessonFifth Grade Add Three Digit Decimal Numbers Lesson

More Information about I Know It Math Lessons is an engaging math practice website developed for elementary-aged students to help them practice basic math skills, including adding with decimals. Both teachers and students find our interactive math lessons easy and enjoyable to use. The kid-friendly layout, bright colors, whimsical graphics, and fun animations augment high quality math content covering hundreds of topics.

Students will make the most out of their math practice time in this decimal addition lesson with several unique features that set I Know It math lessons apart from the rest. A score-tracker shows students how many questions they've answered correctly so far, and a progress-tracker shows them how many questions they have left to answer in the lesson. The hint button in the bottom-left corner of the screen gives students a jump-start on how to answer the question should students choose to click on it. If the students answer incorrectly, a detailed explanation page will pop up on the screen, showing the correct answer along with step-by-step instructions for how to solve the question correctly. In this addition with decimals lesson and all I Know It lessons, there is always an opportunity to learn from mistakes!

In addition, you can always count on our read-aloud lesson feature, indicated by the speaker icon in the upper-left corner of the screen. When clicked, the problem will be read out loud to the student in a clear voice. This feature is ideal for students who prefer auditory learning and for ESL/ELL students.

What are you waiting for?! Go ahead and try this adding with decimals lesson with your students! We think you're going to like it! Don't forget to check out our extensive collection of other math topics!

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5th Grade Adding 3 Digit Numbers with Decimals ActivityFifth Grade Add Three Digit Decimal Numbers Activity


This online math game is categorized on I Know It as a Level E lesson. It may be ideal for fourth or fifth grade students.

Common Core Standard

5.NBT.B.7, MA.5.NSO.2.3, 5.3K
Number And Operations In Base Ten

Perform Operations With Multi-Digit Whole Numbers And With Decimals To Hundredths.
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.

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