1st 9 Weeks Math Test

Front

What is standard form in mathematics?

Back

Standard form is a way of writing numbers using digits, where each digit has a specific place value. For example, 541,214 is in standard form.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over its place value (e.g., 0.8 = 8/10) and simplify if possible.

Front

What is the value of the digit 2 in the number 437,628,019?

Back

In the number 437,628,019, the digit 2 is in the ten thousands place, which means it represents 20,000.

Front

How do you round a number to the nearest thousand?

Back

To round a number to the nearest thousand, look at the hundreds digit. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the place value of the digit 2 in the decimal 0.82?

Back

In the decimal 0.82, the digit 2 is in the hundredths place, which means it represents 0.02.

Front

What is the difference between standard form and expanded form?

Back

Standard form is writing a number using digits, while expanded form breaks the number down into the sum of its place values (e.g., 541,214 = 500,000 + 40,000 + 1,000 + 200 + 10 + 4).

Front

How do you identify the place value of a digit in a number?

Back

To identify the place value of a digit, look at its position in the number. Each position represents a different value (e.g., units, tens, hundreds, etc.).

Front

What is the process for rounding decimals?

Back

To round decimals, look at the digit to the right of the place you are rounding to. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the significance of place value in mathematics?

Back

Place value determines the value of a digit based on its position in a number, which is essential for understanding the magnitude of numbers.

Front

How do you express a number in scientific notation?

Back

To express a number in scientific notation, write it as a product of a number between 1 and 10 and a power of 10 (e.g., 541,214 = 5.41214 x 10^5).