Question

On the number line below, write an addition or subtraction problem that is accurately modeled.

A) 4 + 2
B) 5 - 3
C) 3 + 2
D) 7 - 1

Answer 1

Option (B) 5 - 3 is the correct subtraction problem that is accurately modeled by the given number line scenario, as it represents moving 3 units to the left from 5 resulting in 2.

Step-by-step explanation:

When considering the options provided (A) 4 + 2, (B) 5 - 3, (C) 3 + 2, and (D) 7 - 1, we must follow the basic principles of working with addition and subtraction to determine which operation is accurately modeled on the number line. The primary consideration when working with whole numbers is the direction and distance moved on the number line from the starting point.

Option (B) 5 - 3 is the correct operation, as it signifies starting at positive 5 on the number line and moving 3 units to the left, indicating a subtraction. This results in 2, confirming the accuracy of this subtraction problem with the following steps:

1. Identify the starting point, which is 5.
2. Change the sign of the number being subtracted (3) to a negative.
3. Add the numbers considering the changed sign: 5 + (-3) = 2.

The other options either result in a different final position on the number line or reflect addition rather than subtraction, thus not accurately modeling the scenario.