Lesson 03: Changing Elevation | Unit 5: Rational Number Arithmetic

Multiple Choice

A bird starts at 20 m and changes 16 m. What is the final elevation?

• 36 m

• 4 m

• 20 m

• 16 m

Multiple Choice

A butterfly starts at 20 m and changes -16 m. What is the final elevation?

• 4 m

• 36 m

• -4 m

• -36 m

Multiple Choice

A diver starts at 5 m and changes -16 m. What is the final elevation?

• -11 m

• 21 m

• -21 m

• 11 m

Multiple Choice

A whale starts at -9 m and changes 11 m. What is the final elevation?

• 2 m

• -20 m

• -9 m

• 11 m

Multiple Choice

A fish starts at -9 meters and changes -11 meters. What is the final elevation?

• -20 meters

• 2 meters

• -9 meters

• -11 meters

Multiple Choice

One of the particles in an atom is called an electron. It has a charge of -1. Another particle in an atom is a proton. It has a charge of +1. The charge of an atom is the sum of the charges of the electrons and the protons. A carbon atom has an overall charge of 0, because it has 6 electrons and 6 protons and $$- 6 + 6 = 0$$ . What is the overall charge for neon, given that it has a charge from electrons of -10 and a charge from protons of +10?

• +1
• 0
• -5
• +5

Multiple Choice

One of the particles in an atom is called an electron. It has a charge of -1. Another particle in an atom is a proton. It has a charge of +1. The charge of an atom is the sum of the charges of the electrons and the protons. A carbon atom has an overall charge of 0, because it has 6 electrons and 6 protons and $$- 6 + 6 = 0$$ . Find the overall charge for oxide, given that it has a charge from electrons of -10 and a charge from protons of +8.

• -2
• +2
• -8
• +10

Multiple Choice

One of the particles in an atom is called an electron. It has a charge of -1. Another particle in an atom is a proton. It has a charge of +1. The charge of an atom is the sum of the charges of the electrons and the protons. A carbon atom has an overall charge of 0, because it has 6 electrons and 6 protons and $$- 6 + 6 = 0$$ . Find the overall charge for copper, given that it has a charge from electrons of -27 and a charge from protons of +29.

• +3
• +1
• +2
• -1

Multiple Choice

One of the particles in an atom is called an electron. It has a charge of -1. Another particle in an atom is a proton. It has a charge of +1. The charge of an atom is the sum of the charges of the electrons and the protons. A carbon atom has an overall charge of 0, because it has 6 electrons and 6 protons and $$- 6 + 6 = 0$$ . Find the overall charge for tin, given that it has a charge from electrons of -50 and a charge from protons of +50.

• 0
• +1
• -50
• +50

Multiple Choice

What is the value of the expression $$14.7 + 28.9$$ ?

• 43.6
• 42.5
• 45.0
• 40.1