Open Up - Grade 6 - Mathematics - Unit 7 - Lesson 4

Select all of the numbers that are greater than -5.

Order these numbers from least (at the top) to greatest (at the bottom):

Here are the boiling points of certain elements in degrees Celsius:

• Argon: -185.8
• Chlorine: -34
• Fluorine: -188.1
• Hydrogen: -252.87
• Krypton: -153.2

List the elements from least (at the top) to greatest (at the bottom) boiling points.

1. Krypton
2. Fluorine
3. Chlorine
4. Hydrogen
5. Argon

Explain why zero is considered its own opposite.

Explain how to make these calculations mentally.

99+54

244-99

99*6

99*15

Find the quotient:

Find the quotient:

Find the quotient:

Find the quotient:

Over several months, the weight of a baby measured in pounds doubles. Does its weight measured in kilograms also double?