| Adding positive and negative integers | ||
| #1 | 5 + -2 | 3 |
| #2 | -8 + 5 | -3 |
| #3 | -9 + -8 | -17 |
| #4 | When adding two negatives the sum will be: a. always positive, b. always negative, or c. sometimes positive and sometimes negative | B. always negative |
| #5 | Prove with your counters what -7 + 9 equals | 2 |
| Vocabulary | ||
| #1 | The answer to an addition problem | Sum |
| #2 | The answer to a subtraction problem | Difference |
| #3 | Numbers greater than zero | Positive numbers |
| #4 | The positive number of units a number is from zero on a number line | absolute value |
| #5 | The set of numbers that includes positive and negative numbers, and zero | Integers |
| Subtracting positive and negative integers | ||
| #1 | 10 - (-2) | 12 |
| #2 | -3 - 6 | -9 |
| #3 | -4 - (-3) | 1 |
| #4 | What number should be subtracted from -7 to get a difference of -12? | 5 |
| #5 | When you subtract a negative number from a positive number the difference will be: a.) always positive, b.) always negative, c.) sometimes positive and sometimes negative? | A. Always positive |
| Reasoning | ||
| #1 | When solving the problem -5 + 15 by walking the number line, would you be walking forward or backward? | Forward |
| #2 | When solving the problem -6 - 5 by walking the number line, would you be walking forward or backward? | Backward |
| #3 | When solving the problem -7 - (-3) by walking the number line, would you be facing the negative integers or the positive integers? | Negative integers |
| #4 | When solving the problem -9 - 4 by walking the number line, would you be facing the negative integers or the positive integers? | Positive integers |
| #5 | Explain why subtracting a negative number is the same as adding a positive by relating it to the number line. | When subtracting a negative number, you would be facing in the direction of the negative numbers and walking backwards, which is the same as walking forward when facing the positive integers. |
| Equations | ||
| #1 | Write an equation to represent beginning at 5 on the number line and ending at 2. | 5 - 3 or 5 + (-3) |
| #2 | Write an equation to represent beginning at -7 on the number line and ending at -3. | -7 + 4 or -7 - (-4) |
| #3 | Write an equation that represents beginning at 3 on the number line and ending at -1. | 3 + (-4) or 3 - 4 |
| #4 | Write an equation to represent beginning at -6 on the number line and ending at -9. | -6 + (-3) or -6 - 3 |
| #5 | Write an equation to represent starting at 5.25 on the number line and ending at 7.75. | 5.25 + 2.5 or 5.25 - (-2.5) |
| Final Question | |
| What is your favorite subject? | Math |