OPERATIONS ON WHOLE NUMBERS

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting a number to a nearby specified value, often to make calculations easier. For example, rounding 432 to the nearest hundred gives 400.

Front

How do you round the number 432 to the nearest hundred?

Back

To round 432 to the nearest hundred, look at the tens digit (3). Since it is less than 5, round down to 400.

Front

What is the result of 300,600 - 87,654?

Back

The result is 212,946.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

Which of the following numbers is prime: 35, 39, 41, 51?

Back

41 is a prime number.

Front

What is the value of 89 + 21 – 15 – 14?

Back

The value is 81.

Front

What is the sum of 48,346 and 56,729?

Back

The sum is 105,075.

Front

What is subtraction in mathematics?

Back

Subtraction is the operation of removing objects from a collection. It is the process of finding the difference between two numbers.

Front

What is the difference between 300,600 and 87,654?

Back

The difference is 212,946.

Front

How do you find the sum of two numbers?

Back

To find the sum, simply add the two numbers together.