Math

Front

What is the sum of 45 and 42?

Back

The sum of 45 and 42 is 87.

Front

What is the result of adding 70 and 10?

Back

The result of adding 70 and 10 is 80.

Front

Calculate the sum of 20 and 21.

Back

The sum of 20 and 21 is 41.

Front

What do you get when you add 16 and 13?

Back

When you add 16 and 13, you get 29.

Front

What is 66 plus 63?

Back

66 plus 63 equals 129.

Front

What is the definition of addition in mathematics?

Back

Addition is the mathematical operation of combining two or more numbers to get a total.

Front

What is the commutative property of addition?

Back

The commutative property of addition states that changing the order of the addends does not change the sum.

Front

What is the associative property of addition?

Back

The associative property of addition states that the way in which numbers are grouped in addition does not change the sum.

Front

What is a number line and how is it used in addition?

Back

A number line is a visual representation of numbers in a straight line, used to illustrate addition by showing the distance between numbers.

Front

How do you add two-digit numbers?

Back

To add two-digit numbers, align the numbers by place value, add the digits in the ones place, carry over if necessary, and then add the digits in the tens place.