Semester 1 Review

Write and equation that shows -5 and its opposite have a sum of 0.

(a)  

Tags

CCSS.7.NS.A.1B

A hiker climbs 237 feet up a mountain and then hikes 237 feet down the mountain. What is the net change in elevation?

(a)  

Tags

CCSS.7.NS.A.1A

Juan earns $20 mowing lawns. He owes his friend $20. What is the net change in dollars after Juan pays his friend back?

(a)  

Tags

CCSS.7.NS.A.1A

Which of the following statements BEST describes a situation in which opposite quantities combine to make zero?

• Shawna made 8 cups of soup and divided the soup into 8 containers.

• Marco missed 4 questions on a test in which each question was worth 4 points.

• Melanie deposited $10 in her savings account and then withdrew $10 from the account.

• Peter scored 2 goals in the first period of a hockey game and 2 goals in the second period.

Tags

CCSS.7.NS.A.1A

Problem 1: The charge of an atom is the sum of the charges of its electrons and protons. Find the overall charge for the rest of the elements on the list. Use a number line diagram if needed. For Carbon, the charge from Electrons is -6 and the charge from Protons is +6, resulting in an overall charge of 0. Calculate the overall charge for Neon with a charge from Electrons of -10 and a charge from Protons of +10.

(a)  

Tags

CCSS.7.NS.A.1A

Problem 1: The charge of an atom is the sum of the charges of its electrons and protons. Find the overall charge for the rest of the elements on the list. Use a number line diagram if needed. For Carbon, the charge from Electrons is -6 and the charge from Protons is +6, resulting in an overall charge of 0. Calculate the overall charge for Oxide with a charge from Electrons of -10 and a charge from Protons of +8.

(a)  

Tags

CCSS.7.NS.A.1A

Problem 1: The charge of an atom is the sum of the charges of its electrons and protons. Find the overall charge for the rest of the elements on the list. Use a number line diagram if needed. For Carbon, the charge from Electrons is -6 and the charge from Protons is +6, resulting in an overall charge of 0. Calculate the overall charge for Copper with a charge from Electrons of -27 and a charge from Protons of +29.

(a)  

Tags

CCSS.7.NS.A.1A

Problem 1: The charge of an atom is the sum of the charges of its electrons and protons. Find the overall charge for the rest of the elements on the list. Use a number line diagram if needed. For Carbon, the charge from Electrons is -6 and the charge from Protons is +6, resulting in an overall charge of 0. Calculate the overall charge for Tin with a charge from Electrons of -50 and a charge from Protons of +50.

(a)  

Tags

CCSS.7.NS.A.1A

Problem 2: Write and solve an addition equation to represent the problem below: The temperature is -2°C. If the temperature rises by 15°C, what is the new temperature?

(a)  

Tags

CCSS.7.NS.A.1C

Mai’s bank account is overdrawn by $60, which means her balance is -$60. She gets $85 for her birthday and deposits it into her account. How much does she now have in her bank account?

(a)  

Tags

CCSS.7.NS.A.1C