Math 4 Quarter 2 Week 4 PDF

MATH 4 QUARTER 2 WEEK 4  Learning Competencies and Objectives 1. Perform two or more different operations by applying the MDAS rules. 2. Represent situations involving one or more of the four operations using a number sentence. Content Order of Opera...

MATH 4 QUARTER 2 WEEK 4  Learning Competencies and Objectives 1. Perform two or more different operations by applying the MDAS rules. 2. Represent situations involving one or more of the four operations using a number sentence. Content Order of Operations (Applying the MDAS rules) DAY 1  Short Review Addition and Subtraction Facts  Short Review Multiplication and Division Facts Activity 1. Write the missing number so that the addition sentence is correct. Guide Questions: 1. How did you find the missing numbers so that the addition sentence is correct? 2. How did you check if your  Activity 2. Write the missing number so that the multiplication sentence is Guide Questions: correct.1. How did you find the missing numbers so that the addition sentence is correct? 2. How did you check if your Activity 3. Write the missing number so that the number sentence is Guide Questions: correct.1. How did you find the missing numbers so that the addition sentence is correct? 2. How did you check if your  Order of Operations is a set of rules used in mathematics to determine the sequence in which operations should be performed. For the four fundamental operations, MDAS is used to abbreviate the order of operations.  SUB-TOPIC 1: Order of Operations [Performing two operations: Addition and Subtraction (AS rule) and Multiplication and Division (MD rule)]  The order of operations performing two Operations at a time (i.E., AS rule and AS rule stands MD rule).for Addition and Subtraction rule. The rule states that you should perform addition or subtraction whichever comes first, from left to right. MD rule stands for Multiplication and Division rule. The rule states that you should perform multiplication or division whichever comes first, from left to right.  Worked Example Example 1. What is the value of 20 – 8 + 13? Solution: Start from left to right: Continue from left to right: Example 2. What is the value of 15 + 27 – 2 – 10 + 17? Example 3. Arthur has 15 pieces of colored paper. Ben borrowed 2 colored papers from Arthur while Catherine borrowed 5, and Dave borrowed 6. Eli gave Arthur 8 colored papers. How many-colored papers does Arthur have now? Example 4. What is the value of 30 ÷ 6 × 3? Example 5. Determine the value of 22 × 3 ÷ 2 ÷ 11. Example 6. Mrs. Cruz has 30 pupils. She grouped the class into 3 groups. Each pupil in a group gets 2 pencils. How many pencils were received by one group? DAY 2 A. Determine the value of the following: B. Determine the missing number so that the number sentence is correct.  Learners’ Takeaways Guide Question: In solving a series of operations, in what order do you perform addition and subtraction? multiplication and division? DAY 3  SUB-TOPIC 2: Order of Operations (Performing three or more operations using the MDAS  MDAS rule stands for Multiplication, Division, Addition, and Subtraction rule. The rule states that you should perform first multiplication and division in the order in which they occur followed by addition or subtraction, whichever comes first, from left to right.  Worked Example Example 1. What is the value of 79 – 12 × 4? Example 2. What is the value of 52 – 8 × 5 ÷ 4 + 9? Example 3. What is the value of 60 × 2 + 5 – 3 + 8 × 6 – 1?  Lesson Activity A. Determine the value of the following: 1. 6 + 42 ÷ 2 – 15 2. 5 + 36 ÷ 2 × 3 – 4 3. 63 ÷ 7 × 3 – 4 4. 25 × 2 – 42 ÷ 6 + 18 5. 36 – 10 × 2 ÷ 5 – 11  Lesson Activity B. Determine the missing number so that the number sentence is correct. 1. 9 - ___ + 14 × 2 = 30 2. ___ ÷ 5 - 7 = 3 3. 24 ÷ ___ + 5 × 3 + 2 = 20 4. 16 + 8 × 4 – 9 ÷ ___ = 45 5. 36 + 18 ÷ __ - 10 = 35  Learners’ Takeaways Harry and Hermione were given the same problem. They are to determine the value of 6 + 4 × 2 ÷ 2 - 1. Here are their solutions. Who got the correct answer and correct solution? Why? DAY 4  Reflection on Learning 1. In performing operations, I should look first for __________ and _________ operations. 2. I should perform multiplication and division from _____ to _____. 3. After performing multiplication and division, I can now ____ or _____ from left to right.  Formative Assessment A. Determine the value of the following number sentence: 1. 5 × 2 + 3 4. 5 × 3 + 20 ÷ 4 − 12 2. 2. 15 − 2 + 8 + 10 5. 24 + 18 – 5×6 3. 3. 15 − 6 × 2 + 4 ÷ B. Determine the missing number so that the number sentence is correct. 6. 18 ÷ 3 + ___ – 3 × 4 = 9 7. 7 × 3 – 12 ÷ ___ + 6 = 24 8. 8 ÷ ___ + 6 × 8 = 50 C. Write >,