Reviewing Grade 7 Math Concepts

Dr. Robinson guides students through a series of math problems to prepare for the grade seven New York State mathematics exam. The video covers topics such as solving temperature problems, simplifying algebraic expressions, calculating percentages, estimating values, and solving a card game problem. The video concludes with additional resources for homework help.

What was the temperature at noon on Tuesday in Peekskill after it increased by 6 degrees Celsius from -4 degrees?

• 10 degrees Celsius

• 0 degrees Celsius

• 2 degrees Celsius

• -2 degrees Celsius

If the initial temperature was -4 degrees Celsius and it increased by 6 degrees, how do you calculate the new temperature?

• Add 6 to -4

• None of the above

• Subtract 6 from -4

• Multiply -4 by 6

Which expression simplifies to 2x + 8?

• 4x - 3 + 2x - 5

• 4x - 3 - 2x - 5

• 4x + 3 - 2x + 5

• 4x + 3 + 2x + 5

How do you simplify the expression 4x + 3 - 2x + 5?

• 6x - 2

• 6x + 8

• 2x - 2

• 2x + 8

What is the result of adding 3 positive and 5 negative units?

• 2 negative units

• 2 positive units

• 8 positive units

• None of the above

What is 72% of 175?

• 175

• 150

• 100

• 126

What is the approximate value of 72% of 175 using estimation?

• 110

• 120

• 130

• 126

How do you calculate 50% of 175?

• Subtract 50 from 175

• Multiply 175 by 0.5

• Both A and B

• Divide 175 by 2

If s equals 2.05, what is the best estimate for 6s squared when rounded to the nearest whole number?

• 12

• 25

• 24

• 48

If each card has a value of -50 and Thomas has 5 cards, what is the total value?

• -250

• 50

• -50

• 250