enVision Math, 4th Grade, Topic 1 Practice Test

Front

What is estimation in mathematics?

Back

Estimation is a method used to find an approximate value that is close to the actual amount, often used when exact calculations are not necessary.

Front

How do you round a number to the nearest ten thousand?

Back

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

Front

What is the value of the digit in the ten millions place in the number 951,427,308?

Back

The digit in the ten millions place is 5.

Front

How can you express 16 million, 300 thousand in numerical form?

Back

16 million, 300 thousand is written as 16,300,000.

Front

What does it mean to represent a number on a number line?

Back

To represent a number on a number line means to place it at its correct position based on its value relative to other numbers.

Front

What is the purpose of rounding numbers?

Back

Rounding numbers simplifies them, making it easier to work with them in calculations or estimations.

Front

What is the difference between an exact number and an estimate?

Back

An exact number is a precise value, while an estimate is an approximate value that is close to the exact number.

Front

How do you determine which number best represents a point on a number line?

Back

You look for the number that is closest to the point's position on the line.

Front

What is the process of estimating how many items are needed to fill a container?

Back

To estimate how many items are needed, consider the current amount and the size of the container, then make an educated guess.

Front

What is the significance of place value in a number?

Back

Place value determines the value of a digit based on its position in the number, such as units, tens, hundreds, etc.