Question

When it is your turn, you roll the number cube twice. The first roll tells you how many units to move to the left from the starting point. The second roll tells you how many units to move to the right from where you stopped after your first roll. Which number sentence represents starting at –2, rolling 4 on the first roll and 2 on the second roll?

Answer 1

The correct number sentence representing starting at -2, rolling a 4 first, and then a 2 on a number cube is -2 - 4 + 2 = -4.

Step-by-step explanation:

The question concerns a scenario where a student starts at a position of -2 on a number line, rolls a number cube (die) twice, moving left after the first roll and right after the second roll.

The first roll results in a 4, and the second roll results in a 2.

To represent this situation mathematically, we consider the starting position as -2, the movement to the left as subtraction, and the movement to the right as addition.

The number sentence that represents this operation is: Starting Position + First Roll - Second Roll, which translates to: -2 - 4 + 2.

Step by step, we start at -2, move 4 units to the left (which is subtracting from our position), so now we are at -6.

Then, from there, we move 2 units to the right (which is adding to our position) ending at -4.

Therefore, the number sentence is: -2 - 4 + 2 = -4.