Complete the addition sentence - one digit

Learning Objectives Find a missing number in an addition sentence. Use a 'counting on' strategy to find a missing addend. Use pictures or objects to solve for a missing part. Explain that the equals sign (=) means 'the same as'. Relate subtraction to finding a missing addend. Check their answer by adding the two parts together. You have 4 yummy cookies 🍪. Your friend gives you more. Now you have 9! How many did your friend give you? We will learn how to find missing numbers in addition problems. This is like being a math detective! 🕵️‍♀️ It helps us solve all kinds of number puzzles. Real-World Applications Sharing snacks with your friends. Figuring out how many more points you need in a game. Counting how many more toys you need to complete a s...

TermDefinitionExample Addition SentenceA math sentence that uses a plus sign (+) to add numbers.For example, 3 + 4 = 7 is an addition sentence. AddendThe numbers you are adding together. They are the parts.In 5 + 2 = 7, the numbers 5 and 2 are the addends. SumThe total you get when you add numbers. It is the whole.In 5 + 2 = 7, the number 7 is the sum. Plus Sign (+)The symbol that tells us to add or put things together.We use the + sign to join the parts. Equals Sign (=)The symbol that means 'is the same as'.4 + 1 is the same as 5, so we write 4 + 1 = 5. Missing NumberThe empty spot in our math sentence we need to find.In 6 + __ = 9, the blank is the missing number.

Part-Part-Whole Rule Part + Part = Whole The two small numbers (parts) add up to the big number (whole). Finding a Missing Part Rule Whole - Known Part = Missing Part To find a missing part, subtract the part you know from the total. Turn-Around Fact Rule a + b = b + a You can add numbers in any order. 2 + 5 is the same as 5 + 2.