4th Grade Math Review

Front

What is the process to divide a number evenly among a group of people?

Back

To divide a number evenly among a group, you perform division. The total number is divided by the number of people, and the result is the amount each person receives.

Front

What is a composite number?

Back

A composite number is a positive integer that has at least one positive divisor other than one or itself. In other words, it can be divided evenly by numbers other than 1 and itself.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. It has exactly two distinct positive divisors: 1 and itself.

Front

How do you calculate the remaining quantity after a certain amount has been used?

Back

To find the remaining quantity, subtract the amount used from the total quantity. The formula is: Remaining Quantity = Total Quantity - Amount Used.

Front

What is rounding, and why is it used?

Back

Rounding is the process of adjusting a number to a nearby specified value, often to make it simpler or easier to work with. It is used to reduce the complexity of numbers in calculations.

Front

How do you round a number to the nearest hundred?

Back

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

Front

What is the significance of the number 0 in division?

Back

In division, dividing by zero is undefined. It means you cannot divide a number into zero parts.

Front

What is the difference between even and odd numbers?

Back

Even numbers are integers that can be divided by 2 without a remainder, while odd numbers are integers that cannot be divided by 2 evenly.

Front

What is the total number of jingle bells Santa has if he shares them evenly with his elves?

Back

The total number of jingle bells is the product of the number of elves and the number of jingle bells each elf receives.

Front

How do you identify a composite number from a list of numbers?

Back

To identify a composite number, check if the number has divisors other than 1 and itself. If it does, it is composite.