MATHEMATICS2 Q2 3 solve problems involving addition with sums .pptx

Matatag Mathematics

1. Adding Up to 1000: Mastering Addition with and without Regrouping

2. Welcome to Addition Adventure! Today we're going to learn about adding big numbers We'll practice with money too Are you ready to become addition experts?

3. What is Addition? Addition means putting things together We use the plus sign (+) for addition The answer in addition is called the sum Can you think of times when you use addition in real life?

4. Adding Without Regrouping Sometimes we can add numbers easily We start from the right and add each column Example: 234 + 321 = 555 Let's try one together: 412 + 586 = ?

5. Understanding Place Value Numbers have different values based on their position Ones are on the right Then tens, then hundreds Why do you think place value is important in addition?

6. What is Regrouping? Sometimes when we add, we get more than 9 in a column We need to move some to the next column This is called regrouping or carrying Have you heard of regrouping before?

7. Regrouping in Action Let's add 178 + 456 8 + 6 = 14, so we regroup We write 4 in ones and carry 1 to tens Can you finish solving this problem?

8. Practice Time: Regrouping Try these problems: 329 + 468 = ? 567 + 298 = ? Which one was harder? Why?

9. Adding Money We can use addition with money too Remember: 100 cents = 1 dollar We use a decimal point to separate dollars and cents What coins do you know?

10. Money Addition Without Regrouping Let's add $2.45 + $3.54 Line up the decimal points Add cents, then dollars What's the answer?

11. Money Addition With Regrouping Now let's try $5.75 + $2.80 75 cents + 80 cents = 155 cents That's more than a dollar! We regroup to get $8.55 Can you explain why?

12. Real-Life Money Problems You have $4.25 and find $2.75. How much do you have now? A toy costs $12.50. You have $20. How much change will you get? Which problem was easier? Why?

13. Adding Three Numbers We can add more than two numbers at once Start from the right, just like before Example: 123 + 456 + 210 = 789 Try this: 325 + 142 + 231 = ?

14. Challenge: Three-Number Money Addition Let's add $4.25 + $3.50 + $2.75 Remember to line up the decimal points Add one column at a time What's the total?

15. Mental Math Tricks Sometimes we can add quickly in our heads Adding 10: just increase the tens digit Adding 100: increase the hundreds digit How would you add 10 to 479 mentally?

16. Estimating Sums We can estimate to check if our answer makes sense Round numbers to the nearest 10 or 100 Example: 328 + 295 is about 300 + 300 = 600 Why is estimating useful?

17. Word Problems Sam has 345 stickers. Jill gives him 287 more. How many does he have now? A school has 523 boys and 418 girls. How many students in total? Which information helps you solve each problem?

18. Addition Strategies Use a number line Break numbers into easier parts Use objects or drawings Which strategy do you like best?

19. Review Time! We learned about adding up to 1000 We practiced with and without regrouping We added money too What was your favorite part of the lesson?

20. You're Addition Superstars! You've learned so much about addition Keep practicing to get even better Addition is useful in everyday life What will you add up next?

21. Welcome Back, Addition Explorers! We're going to learn even more about addition Get ready for fun activities and challenges What do you remember from our last lesson?

22. Adding by Making 10 Sometimes it's easier to add by making groups of 10 Example: 8 + 5 = 8 + 2 + 3 = 10 + 3 = 13 How would you use this strategy for 9 + 6?

23. Number Bonds Number bonds show how numbers are related They help us see parts of a whole Can you make a number bond for 10?

24. Addition with a Number Line We can use a number line to add Start at the first number, then jump forward Try 24 + 35 on a number line How many jumps did you make?

25. Doubles and Near Doubles Doubles are easy to remember: 5 + 5, 6 + 6 Near doubles are close: 6 + 7 is like 6 + 6 + 1 What's the near double for 7 + 8?

26. Adding Three-Digit Numbers Remember to line up the place values Start from the right (ones column) Regroup when needed Let's try 352 + 429 together

27. Addition Word Problem Fun Sara has 234 marbles. Tom gives her 158 more. How many marbles does Sara have now? What information do we need to solve this?

28. Making Change Game You're the shopkeeper! An item costs $3.75. A customer pays with $5.00 How much change do you give? Practice with a partner

29. Addition Scavenger Hunt Look around the classroom Find items you can count and add Example: 12 pencils + 15 markers = 27 writing tools What can you find to add?

30. Adding with Arrays Arrays show objects in rows and columns They help us add quickly 3 rows of 4 is the same as 4 + 4 + 4 = 12 Can you make an array for 5 x 3?

31. Addition Patterns Numbers follow patterns when we add Adding 1 makes the next counting number Adding 10 changes only the tens place What happens when you add 100?

32. Fact Families Fact families show related addition facts Example: 3 + 5 = 8, 5 + 3 = 8 Can you make a fact family for 2, 6, and 8?

33. Addition with Base 10 Blocks Base 10 blocks show place value Use them to add visually Try 234 + 152 with blocks How does this help you understand regrouping?

34. Mental Math: Adding 9 To add 9, add 10 and subtract 1 26 + 9 is like 26 + 10 - 1 = 35 Try 45 + 9 in your head What other mental math tricks do you know?

35. Addition Bingo Let's play Addition Bingo! Your card has sums instead of numbers Listen for addition problems Mark the sum if you have it Who will get Bingo first?

36. Creating Your Own Word Problems Think of a situation where you use addition Write a word problem about it Trade with a partner and solve each other's problems Was it easier to write or solve the problem?

37. Addition with Money: Shopping Game You have $10 to spend at the class store Items have different prices Add up your items' costs How much did you spend? How much change?

38. Estimating Sums with Money Sometimes we need to guess total costs Round prices to the nearest dollar Estimate: $3.75 + $2.20 + $4.50 How close was your estimate to the exact sum?

39. Addition Relay Race Form teams and line up Each person solves one addition problem Pass the baton (pencil) to the next person Which team can finish first and correctly?

40. Congratulations, Addition Masters! You've learned so much about addition Remember to practice your new skills Addition is a tool you'll use every day What was your favorite new addition trick?

41. Question 1 What is 345 + 278? A) 513 B) 623 C) 713 D) 523 Choose the best answer!

42. Question 2 Sally has $4.25 and finds $2.75. How much money does she have now? A) $6.00 B) $7.00 C) $6.50 D) $7.50 Which answer is correct?

43. Question 3 A class has 23 boys and 19 girls. How many students are in the class? A) 41 B) 42 C) 43 D) 44 Can you figure out the total?

44. Question 4 What is 456 + 329? A) 775 B) 785 C) 795 D) 805 Use your addition skills to solve this!

45. Question 5 An apple costs $0.50 and a banana costs $0.30. How much do 3 apples and 2 bananas cost? A) $1.90 B) $2.00 C) $2.10 D) $2.20 Add up the fruits to find the answer!

46. Question 6 What number comes next: 178, 188, 198, ___? A) 208 B) 218 C) 228 D) 238 Look for the pattern to solve this one!

47. Question 7 Tom has 145 toy cars. His friend gives him 78 more. How many cars does Tom have now? A) 213 B) 223 C) 233 D) 243 Add it up to find Tom's new total!

48. Question 8 Estimate the sum of 392 + 245: A) 600 B) 650 C) 700 D) 750 Round the numbers to make a good guess!

49. Question 9 What is 567 + 298? A) 855 B) 865 C) 875 D) 885 Remember to regroup if needed!

50. Question 10 If you add 10 to 479, what number do you get? A) 489 B) 499 C) 579 D) 589 Think about place value to solve this quickly!

51. Answer Key 1. B) 623 2. B) $7.00 3. B) 42 4. B) 785 5. C) $2.10 6. A) 208 7. B) 223 8. B) 650 9. B) 865 10. A) 489 How many did you get right? Great job on completing the quiz!