Add three one-digit numbers

Learning Objectives Add three one-digit numbers with a sum up to 20. Identify pairs of numbers that make 10 to add faster. Use the 'doubles' strategy to add three numbers. Write a number sentence for adding three numbers. By the end of of this lesson, students will be able to show their work by adding the first two numbers, then the third. Solve word problems that involve adding three one-digit numbers. You have 3 red apples 🍎, 4 green apples 🍏, and 2 yellow apples 🍋. How many apples do you have in all? Today, we will learn how to add three small numbers together! It's like putting three groups of toys together to find the total. This fun skill helps you count things quickly. Real-World Applications Counting the total number of different colored crayon...

TermDefinitionExample AddendAn addend is any number that you are adding. We will use three addends!In 2 + 5 + 3, the addends are 2, 5, and 3. SumThe sum is the answer you get when you add numbers. It's the total! 🎉In 2 + 5 + 3 = 10, the sum is 10. Number SentenceA number sentence shows the numbers and the math sign. It's like a math story.7 + 1 + 8 = 16 is a number sentence. Make a TenThis is a super trick! Look for two numbers that add up to 10 first.In 8 + 5 + 2, you can add 8 + 2 first to make 10. It's easier! DoublesDoubles are when you add the same number twice. Like 4 + 4 or 6 + 6.In 4 + 7 + 4, you can add the doubles 4 + 4 first to get 8. GroupingYou can group or 'hug' two numbers to add first. The answer is always the same!For 5 + 2 + 8, you can do (5 + 2...

Add in Order (Step-by-Step) (a + b) + c Add the first two numbers. Then, add the third number to that answer. Find a Ten First (Super Strategy) (a + c) + b, if a + c = 10 Look for two numbers that make 10. Add them first to make the problem easier. Find Doubles First (Twin Power) (a + a) + c If you see two of the same number, add them together first. You know your doubles!