Direction: Solve the following using PMDA. 1. 16 + 2 x 7 = N 2. 2 * (9 x 2) - (2 x 5) = N
Answer (1)
To solve the given problems, we'll use the PMDA rule, which stands for Parentheses, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is essentially the order of operations known as PEMDAS or BODMAS. Let's break down each problem step-by-step:
16 + 2 x 7 = N
According to PMDA, we first perform multiplication before addition.
First, calculate the multiplication: 2 × 7 = 14
Next, add the result to 16: 16 + 14 = 30
Therefore, N = 30 .
2 * (9 x 2) - (2 x 5) = N
Here, we need to solve the expressions in the parentheses first.
Calculate 9 × 2 = 18 .
Calculate 2 × 5 = 10 .
Now we have 2 × 18 − 10 .
First, perform the multiplication: 2 × 18 = 36 .
Then subtract 10: 36 − 10 = 26 .
Thus, N = 26 .
By following the PMDA rule, we ensure that each mathematical expression is solved correctly in the proper sequence.
