4th Grade Math NC Check-n # 1 Review

Front

What is the formula for calculating the perimeter of a rectangle?

Back

Perimeter = 2 * (length + width)

Front

If an envelope is 3 inches wide and has a perimeter of 30 inches, how do you find the length?

Back

Use the perimeter formula: 30 = 2 * (length + 3). Solve for length.

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder.

Front

List the factors of 36.

Back

1, 2, 3, 4, 6, 9, 12, 18, 36.

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length * width

Front

If a figure is irregular, how can you find its area?

Back

Divide it into regular shapes, calculate their areas, and then sum them up.

Front

How do you calculate the total length of fencing needed for a rectangular area?

Back

Use the perimeter formula: Perimeter = 2 * (length + width).

Front

If Farmer Bob wants to fence an area that is 40 feet long and 20 feet wide, how much fencing does he need?

Back

120 feet (Perimeter = 2 * (40 + 20) = 120 feet).

Front

What does it mean to go to the amusement park fewer than 3 times?

Back

It means visiting the park 0, 1, or 2 times.

Front

How do you interpret data from a survey about visits to an amusement park?

Back

Count how many people fall into each category of visits.