Math 4 Today ~ Week 17 ~ Day 1

Front

What is the formula to find the perimeter of a rectangle?

Back

The perimeter of a rectangle is found by adding the lengths of all four sides, or using the formula: P = 2(length + width).

Front

If the perimeter of a rectangle is 222 millimeters and the length is 60 millimeters, how do you find the width?

Back

To find the width, use the formula: width = (Perimeter/2) - length. In this case, width = (222/2) - 60 = 51 millimeters.

Front

What does 'expanded form' mean in mathematics?

Back

Expanded form is a way of writing numbers to show the value of each digit. For example, 721904 in expanded form is 700,000 + 20,000 + 1,000 + 900 + 4.

Front

How do you convert a number into expanded form?

Back

To convert a number into expanded form, break it down by place value. For example, for 721904, separate it into hundreds of thousands, tens of thousands, thousands, hundreds, tens, and ones.

Front

What is the value of the digit 2 in the number 721904?

Back

In the number 721904, the digit 2 is in the ten-thousands place, so its value is 20,000.

Front

How do you divide a total number of people into equal groups?

Back

To divide a total number of people into equal groups, divide the total number by the number of groups. For example, 352 people divided into 8 groups equals 44 people per group.

Front

What is the result of dividing 352 by 8?

Back

352 divided by 8 equals 44.

Front

What is a rectangle?

Back

A rectangle is a four-sided shape (quadrilateral) with opposite sides that are equal in length and four right angles.

Front

What is the difference between perimeter and area?

Back

Perimeter is the total distance around a shape, while area is the amount of space inside a shape.

Front

What is a millimeter?

Back

A millimeter is a unit of length in the metric system, equal to one-thousandth of a meter.