LPC for Grade 2 Algebra

Lesson on Simple Algebra

​How do you find the missing value in Mathematical Sentences involving the Basic Operations

SAMPLE

N - 85 = 15

SOLUTION: ___________________

Lesson on Simple Algebra

​Here is the PROBLEM:

What number am I? If I am multiplied by 10, I become 400.

OBSERVE

N.S. N x 10 = 400

SOLUTION: ___________________

Answer: N = 40

Lesson on Simple Algebra

​Remember

To find the missing value in mathematical sentences where the missing N is found in the beginning, we perforn the inverse operation.

1. If it is a missing addend (N + 5 = 9), perform its inverse, subtraction.

2. If it is a missing factor (4 x N = 12), perform its inverse, division.

Lesson on Simple Algebra

​Remember

To find the missing value in mathematical sentences where the missing N is found in the beginning, we perforn the inverse operation.

3. If it is a missing minuend (N - 5 = 3), perform its inverse, addition.

4. If it is a missing dividend (N/5 = 6), perform its inverse, multiplication.

Lesson on Simple Algebra

Let us practice the skill.

Accomplish Quizizz

Multiple Choice

What is the value of N in N – 95 = 75?

• 160

• 150

• 175

• 170

Multiple Choice

What number am I? If I am multiplied by 20, I become 80.

• 10

• 40

• 4

• 6

Multiple Choice

What is the correct operation that must be applied to find the missing value of N?

 

PROBLEM:

If 40 is subtracted from a number, the result is 70. What is the number?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

She spent P160 for snacks and had a remaining amount of P340.

How much is her money in the beginning?

• P 400

• P 350

• P 500

• P 550

Multiple Choice

Find N in N ÷ 30 = 60.

• 200

• 300

• 900

• 1 800