Ways to make a number using subtraction

Learning Objectives Identify that a number can be made in many ways using subtraction. Create at least three different subtraction sentences for a given number under 100. Solve for a missing number in a two-digit subtraction problem. Use a number line to show different ways to make a number. Explain their subtraction strategy using simple math words. Check their subtraction answers using addition. You have 15 stickers! ✨ How many different ways can you give some to a friend and know how many are left? Today, we will be super math detectives! 🕵️ We will find all the secret subtraction problems that equal the same number. It's like a fun puzzle! Real-World Applications Sharing your toys with a friend. Spending your allowance money at the store. Eating some yummy...

TermDefinitionExample Subtraction SentenceA math sentence that uses a minus sign (-) to take away.25 - 10 = 15 is a subtraction sentence. 🍎🍎 DifferenceThe answer you get when you subtract one number from another.In 30 - 20 = 10, the difference is 10. diferença Target NumberThe special number we want to make as our answer.If our target number is 20, we can make it with 50 - 30. 🎯 MinuendThe big number you start with before you take any away.In 45 - 5 = 40, the minuend is 45. It's the first number! SubtrahendThe number that you are taking away from the starting number.In 45 - 5 = 40, the subtrahend is 5. It's the second number!

The Subtraction Rule Starting Amount - Amount Taken Away = Amount Left This shows us how subtraction works. We always start with a bigger number. Finding a Missing Part Starting Amount - Amount Left = Amount Taken Away Use this when you know the start and end, but need to find the middle part.