GRADE 2 MATH SUBTRACTION 03- 27-23.pptx

filipino 2

1. Grade 2 - Matapat

2. Basic Subtraction facts

3. Subtraction is used when we take away a number from another number. Recall that addition is combining parts together to form a whole, while subtraction is removing parts from a whole. This means that subtraction and addition are inverses of each other. We can find a missing addend through subtraction.

4. Harold has 20 marbles. He gave six to his little brother. How many marbles does Harold have now? 20 - 6 = 14 minuend subtrahend difference

5. 20 - 6 = 14 minuend subtrahend difference is the number being subtracted or taken. is the number from which we take away. is the answer in subtraction or the amount left. minus sign

6. Example 1: Complete the addition sentence: 15 + ___ = 22 The sum becomes the minuend. 15 + ___ = 22 22 - 15 = _____ The missing addend is now the difference. The given addend becomes the subtrahend. 7 7 7

7. 15 + 7 = 22 22 - 15 = 7 Try this! 84 – 23 = 61 23 + 61 = 84

8. Subtraction is also used when we compare two numbers. Example 2: How much less is 3 than 8? 8 - 3 = ____ 1 2 3 4 5 5

9. Example 3: Princess has 14 books in her collection. Her friend has 8 books. How many more books does princess have than their friend? 14 8 14 - 8 = __ 6

10. Seatwork #4: Do “APPLY A, B, and C’’ on page 80 of your Math book.

11. Homework #3: Do “REINFORCE A, B, AND C’’ on pages 81-83 of your Math book. Don’t forget to bring your book and notebook tomorrow.