Addition - one digit

Learning Objectives Add two one-digit numbers with a sum up to 18. Identify the addends and the sum in an addition sentence. Use objects or drawings to solve one-digit addition problems. Write a correct addition number sentence for a story problem. Explain that the order of addends does not change the sum. Solve addition problems by counting on from the larger number. You have 3 red crayons 🖍️ and 2 blue crayons 🖍️. How many do you have all together? Today, we will learn how to add small numbers together. This is called addition! It helps us find out the total amount of things. Real-World Applications Counting your toys to see how many you have in total. 🧸 Sharing snacks with a friend and counting them all. 🥨 Figuring out the total score in a fun board game. 🎲...

TermDefinitionExample AddTo put things together to find the total number. ➕We add 2 apples and 3 apples to get 5 apples. AddendThe numbers that you are adding together. 🔢In 4 + 5 = 9, the numbers 4 and 5 are the addends. SumThe answer you get when you add numbers. It's the total! 🎉In 4 + 5 = 9, the number 9 is the sum. Plus Sign (+)This symbol tells us to add the numbers together.We see it in the middle, like this: 6 + 3. Equals Sign (=)This symbol means 'is the same as'. It shows us the sum.It comes right before the answer: 6 + 3 = 9. Number SentenceA full math problem with numbers and signs. ✍️An example of a number sentence is 7 + 2 = 9.

The Flip-Flop Rule (Commutative Property) a + b = b + a You can add numbers in any order. The sum will be the same! 3 + 4 is the same as 4 + 3. The Adding Zero Rule (Identity Property) a + 0 = a When you add zero to any number, the number stays the same. It's like adding nothing! 8 + 0 is still 8.