Adding 1

Learning Objectives Solve addition problems where 1 is added to a number up to 19. State that adding 1 is the same as finding the next number. Use a number line to show adding 1. Write an addition sentence for an 'adding 1' story problem. Recognize the plus (+) and equals (=) signs in an 'adding 1' equation. Quickly say the answer to any number plus 1, up to 19. You have 5 yummy cookies 🍪. What if you get 1 more? Let's find out! We will learn a super trick for adding 1. It's just like finding the very next number! This makes counting and adding so easy and fun. Real-World Applications Getting one more crayon for your box 🖍️. One more friend joins your game to play 🤸. Your pet has 2 toys and you give it 1 more 🎾. You grow one year o...

TermDefinitionExample AddTo put numbers together to find the total amount.If you add 2 apples and 1 apple, you get 3 apples. 🍎🍎 + 🍎 = 🍎🍎🍎 Plus Sign (+)This little sign tells us to add numbers together.The sign in 4 + 1 = 5 is the plus sign. Equals Sign (=)This sign shows that both sides have the same amount.In 7 + 1 = 8, the equals sign means 7 + 1 is the same as 8. Next NumberThe number that comes right after another when you count.You have 5 fingers. The next number is 6. 👍 SumThe answer you get when you add numbers together.In 9 + 1 = 10, the number 10 is the sum.

The 'Next Number' Rule n + 1 = \text{the next number} When you add 1 to any number, the answer is always the next number you would say when counting. The 'Turn-Around' Rule a + 1 = 1 + a It doesn't matter if you add 1 to a number, or a number to 1. The answer is the same! 5 + 1 is the same as 1 + 5.