Subtract zero and all

Learning Objectives Subtract zero from any number up to 20. Explain that subtracting zero means the number does not change. Subtract a number from itself to get zero. Explain that subtracting all of something means nothing is left. Write a number sentence for subtracting zero. Write a number sentence for subtracting a number from itself. Use pictures to show subtracting zero and all. You have 5 yummy cookies 🍪. If you decide to eat zero cookies, how many are left? Today we will learn two super easy subtraction tricks! We will learn what happens when you take away nothing. We will also learn what happens when you take away everything. Real-World Applications Sharing snacks: If you have 3 crackers and share all 3, you have 0 left. Playing with toys: You have 8 toy ca...

TermDefinitionExample SubtractTo take away from a group. It makes the number smaller.If you have 4 balls ⚽⚽⚽⚽ and you take away 1, you have 3 left. Minus Sign (-)This is the minus sign. It tells us to subtract.The minus sign in 5 - 2 = 3 means 'take away'. Equals Sign (=)This is the equals sign. It means 'is the same as'.In 8 - 1 = 7, the equals sign shows that 8 - 1 is the same as 7. DifferenceThe answer you get when you subtract.In 6 - 4 = 2, the difference is 2. Subtract ZeroTaking away nothing from a group.You have 9 crayons 🖍️. You take away 0. You still have 9 crayons. Subtract AllTaking away every single item from a group.You have 5 balloons 🎈. All 5 fly away. You have 0 balloons left.

The Zero Rule n - 0 = n When you subtract zero from a number, the number stays the same. The 'All' Rule n - n = 0 When you subtract a number from itself, the answer is always zero.