Mathematical Problem Solving Concepts

This video tutorial covers various mathematical concepts for seventh-grade students. It begins with subtracting rational numbers, using temperature differences as examples. The tutorial then explores proportional relationships between the number of pixels and screen area, followed by calculating height differences and distances in different scenarios. It also includes solving problems involving differences in numbers, calculating meal prices from gratuity percentages, and identifying scaled copies of polygons. The video concludes with a call to support the channel.

How much warmer is 82 degrees compared to 40 degrees?

• 42 degrees

• 40 degrees

• 82 degrees

• 122 degrees

What is the equation representing the relationship between pixels and screen area?

• p = 5184/a

• p = 5184a

• p = a + 5184

• p = a/5184

What is the constant of proportionality in the pixel and screen area relationship?

• 31

• 104

• 5184

• 6

What is the distance between a point 30 meters up a cliff and another 87 meters up?

• 117 meters

• 57 meters

• 157 meters

• 130 meters

What is the difference in height between an albatross flying at 100 meters and a shark swimming 30 meters below the surface?

• 100 meters

• 30 meters

• 130 meters

• 70 meters

Calculate the difference: negative five minus six.

• 1

• Negative 11

• Negative 1

• 11

What is the result of 35 minus negative 8?

• 43

• 27

• 8

• 35

What is the difference between two-fifths and three-fifths?

• Negative one-fifth

• One-fifth

• Two-fifths

• Zero

If a meal's gratuity is $4.89 at 15%, what was the meal's price?

• $48.90

• $32.60

• $15.00

• $4.89

Which polygon is a scaled copy of polygon A?

• Polygon C

• Polygon E

• Polygon D

• Polygon B