7th Grade Math Unit 4 Review: Adding and Subtracting Rational Expressions

This video is a review of Unit 4, focusing on Chapter 8 topics such as scale drawings, cross sections of 3D solids, and angle relationships. The video emphasizes practice over teaching, encouraging students to use their notes and previous lessons for additional help. Students are guided through exercises on scale drawings, identifying cross sections, and calculating complementary and supplementary angles, with prompts to self-assess their understanding using highlighters.

What chapters does Unit 4 cover?

• Chapters 10 and 11

• Chapters 7 and 8

• Chapters 9 and 10

• Chapters 8 and 9

What tool is suggested to use for highlighting key points in the notebook?

• Markers

• Pencils

• Pink and green highlighters

• Blue and red pens

How is the scale factor represented in the example given?

• 1 inch per 2.5 miles

• 1 mile per 2.5 inches

• 2.5 inches per 1 mile

• 2.5 miles per 1 inch

What is the correct representation of the scale factor used in the lesson?

• 1 inch equals 2.5 miles

• 1 mile equals 2.5 inches

• 2.5 inches equals 1 mile

• 2.5 miles equals 1 inch

What shape is the cross section when a plane intersects a pyramid at an angle?

• Trapezoid

• Triangle

• Rectangle

• Circle

What shape results from the cross section of a cylinder cut by a plane parallel to its base?

• Triangle

• Rectangle

• Square

• Circle

What is the sum of complementary angles?

• 360 degrees

• 180 degrees

• 90 degrees

• 45 degrees

What type of angles add up to 180 degrees?

• Complementary angles

• Vertical angles

• Adjacent angles

• Supplementary angles

How is angle 'n' determined in the complex angle problem?

• Using complementary angles

• As an adjacent angle

• Using supplementary angles

• As a vertical angle

What is the value of angle 'm' in the complex problem involving angles?

• 90 degrees

• 47 degrees

• 36 degrees

• 52 degrees