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Lorraine is thinking of a positive whole number. She tells her brother she can make the value of her number larger by subtracting. Her brother says that is impossible. Lorraine proves she is right. To make her statement...

Which of the following numbers are exactly 15 units away from −6 on a number line?

After completing his homework, George said, “Wow! The answers to the last four expressions were all −5!” The last four expressions of George’s homework are listed below. Select Yes or No to show if you agree with the ans...

A student made a mistake in the following problem 17 − (−3) and got an answer that was not correct. Identify the step in which the student made the mistake. Step 1: 17 − (−3) Step 2: 17 + (−3) Step 3: 14