Lesson 10 Applying Addition of Signed Numbers Answer

Lesson 10 Applying Addition of Signed Numbers

• Answer the following questions on the paper provided. Show your work! All of your work – even if you use a calculator.

Adding positive and negative numbers using a number line: Add 6 + -8 -3 -2 -1 0 1 2 3 4 5 6 7

Adding positive and negative numbers using a number line: Add 6 + -8 start -3 -2 -1 0 1 2 3 4 5 6 7

Adding positive and negative numbers using a number line: Add 6 + -8 start -3 -2 -1 0 6 units right 1 2 3 4 5 6 7

Adding positive and negative numbers using a number line: Add 6 + -8 start -3 -2 -1 0 6 units right 1 2 3 4 8 units left stop The sum is -2 5 6 7

Add using a number line. 1. 2 + -5 2. -8 + 3 3. 4 + -9 4. -7 + -3

Adding Signed numbers by Using Integer Chips 1 =1 -1 = -1

Adding Signed numbers by Using Integer Chips example: 4 + -2

Adding Signed numbers by Using Integer Chips example: 4 + -2 1 1

Adding Signed numbers by Using Integer Chips example: 4 + -2 1 1 -1 -1 1 1

Adding Signed numbers by Using Integer Chips example: 4 + -2 1 1 -1 -1 1 1

Adding Signed numbers by Using Integer Chips example: 4 + -2 1 1 -1 -1 1 1 4 + -2 = 2

Use (draw) Number Chips to find each sum 5. ) -2 + 7 6. ) 5 + -4

Complete the following problems: 7. )Explain how you would solve the following problem: A submarine descended 240 m below the ocean surface. It then ascended 85 m, before diving another 130 m. Find the depth of the submarine. 8. ) -2 + (-4) = 9. ) 11 + (-3) = 10. ) -9 + 8 = 11. ) -5 +(-4) = 12. ) -8 + 5 + (-3) = 13. ) -7 + (-2) + 4 = 14. ) 8 + (-6) + 2 =

15. ) -6 + 2 + (-3) = 16. )On Tuesday afternoon the temperature was -3 degrees. That night it dropped 8 degrees, and the next morning it rose 15 degrees. What was the temperature on Wednesday morning? 17. ) A team scored 5 points. Then there was a 2 -point penalty. This was followed by a 3 -point score. Find the net gain or loss. 18. ) A company’s stock opened Monday at $37 a share. It lost $4 that day, then another $2 Tuesday. It gained $2 Wednesday and another $5 Thursday. What was its closing price Thursday? HOMEWORK : Worksheet