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

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

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

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

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

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

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?

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.

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.

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.

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