Mr. Powell asked five students to write and expression that includes finding the sum of 7 and 12 the students wrote these five expressions

Question

Which expressions include finding the sum of 7 and 12
given:
7+12x3
7+12 divided by 3
3x7+12
7+12-3
3 times (7+12)

Answer 1

To determine which of the five expressions includes the sum of 7 and 12, we need to identify if the expression explicitly calculates \(7 + 12\).

Let's examine each expression:

1. 7 + 12 x 3: This does not represent the sum alone; it includes multiplication with \(3\).
2. 7 + 12 divided by 3: This also does not solely represent the sum; it includes division by \(3\).
3. 3 x 7 + 12: This expression does not contain the sum of \(7 + 12\); instead, it multiplies \(3\) by \(7\) and then adds \(12\).
4. 7 + 12 - 3: This explicitly contains the sum \(7 + 12\) before subtracting \(3\).
5. 3 times (7 + 12): This expression contains the sum \(7 + 12\) within the parentheses and multiplies the result by \(3\).

Based on the analysis, the expressions that include finding the sum of \(7\) and \(12\) are:

• 7 + 12 - 3
• 3 times (7 + 12)

Thus, the correct expressions are 4 and 5.