Math 2.2B TEKS

Front

What is expanded notation?

Back

Expanded notation is a way of writing numbers that shows the value of each digit. For example, 806,000 can be written as (8 × 100,000) + (0 × 10,000) + (6 × 1,000) + (0 × 100) + (0 × 10) + (0 × 1).

Front

How do you write a number in standard form?

Back

To write a number in standard form, combine the values of each digit from expanded notation into a single number. For example, (8 × 100,000) + (0 × 10,000) + (6 × 1,000) = 806,000.

Front

What does rounding a number mean?

Back

Rounding a number means adjusting it to the nearest specified place value, such as the nearest ten, hundred, or thousand. For example, 238,855 rounded to the nearest thousand is 239,000.

Front

What is the value of a digit in a number?

Back

The value of a digit in a number depends on its position. For example, in the number 4,351, the digit 4 is in the thousands place, so its value is 4,000.

Front

How do you find the difference between two numbers?

Back

To find the difference, subtract the smaller number from the larger number. For example, if 92,721 people attended games in November and 14,629 fewer attended in October, you would calculate 92,721 - 14,629.

Front

What is the place value of the digit 5 in the number 5,432?

Back

The place value of the digit 5 in the number 5,432 is 5,000, as it is in the thousands place.

Front

What is a numerical expression?

Back

A numerical expression is a mathematical phrase that includes numbers and operations, such as addition, subtraction, multiplication, or division. For example, 100,000,000 + 40,000,000 + 500,000 + 70,000 + 8,000.

Front

How do you convert expanded notation to standard form?

Back

To convert expanded notation to standard form, add the values together. For example, (100,000,000 + 40,000,000 + 500,000 + 70,000 + 8,000) equals 140,578,000.

Front

What is the process of estimating a number?

Back

Estimating a number involves rounding it to make calculations easier. For example, estimating 238,855 to the nearest thousand gives you 239,000.

Front

What is the significance of the digit's position in a number?

Back

The position of a digit in a number determines its value. For example, in 4,351, the digit 4 represents 4,000 because it is in the thousands place.