8th Grade Unit 1 Checkpoint *Updated*

Front

What is the half-life of a substance?

Back

The half-life of a substance is the time required for half of the substance to decay or be transformed into another substance.

Front

What is the half-life of Uranium?

Back

The half-life of Uranium is 2.5 x 10^5 years.

Front

Convert 2.5 x 10^5 to standard form.

Back

250000

Front

What does it mean to order numbers from least to greatest?

Back

Ordering numbers from least to greatest means arranging them in ascending order based on their value.

Front

List the following numbers in order from least to greatest: π, √36, √45, 6.9.

Back

√36, 6.9, √45, π.

Front

What is the value of √36?

Back

6.

Front

What is the approximate value of √45?

Back

Approximately 6.7.

Front

What is π (pi) approximately equal to?

Back

Approximately 3.14.

Front

How do you compare decimal numbers?

Back

To compare decimal numbers, align the decimal points and compare digit by digit from left to right.

Front

What is the significance of ordering numbers in mathematics?

Back

Ordering numbers helps in understanding their relative sizes and is essential for operations like addition, subtraction, and finding averages.