CBA #1 Review

Front

What is rounding and how is it applied to decimal numbers?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For decimal numbers, rounding to the tenths place means looking at the hundredths place; if it's 5 or more, you round up, otherwise, you round down.

Front

How do you compare decimal numbers?

Back

To compare decimal numbers, align the numbers by their decimal points and compare digit by digit from left to right. The first digit that differs determines which number is larger.

Front

What does the multiplication of two decimals represent in a real-world context?

Back

The multiplication of two decimals can represent various real-world scenarios, such as calculating area (length x width) or determining total cost (price per item x number of items).

Front

What is the significance of the less than (<) and greater than (>) symbols in comparisons?

Back

The less than (<) symbol indicates that the number on the left is smaller than the number on the right, while the greater than (>) symbol indicates that the number on the left is larger than the number on the right.

Front

How do you calculate the total cost of an item purchased multiple times?

Back

To calculate the total cost of an item purchased multiple times, multiply the cost of the item by the number of times it is purchased.

Front

What is the importance of significant figures in measurements?

Back

Significant figures indicate the precision of a measurement. They help convey how accurate a measurement is and are important in scientific calculations.

Front

How do you round a number to the nearest hundredth?

Back

To round a number to the nearest hundredth, look at the thousandths place; if it's 5 or more, round up the hundredths place by one, otherwise, keep it the same.

Front

What is a decimal model and how is it used?

Back

A decimal model visually represents decimal values, often using grids or blocks, to help understand multiplication and addition of decimals.

Front

What is the process of estimating a sum or product?

Back

Estimating a sum or product involves rounding the numbers to simpler values to make mental calculations easier, providing a quick approximation of the actual result.

Front

How do you interpret a table of data?

Back

Interpreting a table of data involves analyzing the values presented, comparing them, and drawing conclusions based on the relationships and differences observed.