Basic Addition and Subtraction

Front

What is the result of adding two numbers together called?

Back

The result of adding two numbers together is called the sum.

Front

What is the result of subtracting one number from another called?

Back

The result of subtracting one number from another is called the difference.

Front

If there are 17 students in a class and 8 are girls, how do you find the number of boys?

Back

To find the number of boys, subtract the number of girls from the total number of students: 17 - 8 = 9 boys.

Front

How do you calculate how many items are left after some are taken away?

Back

To calculate how many items are left, subtract the number of items taken away from the original number of items.

Front

What is the equation for finding the total number of items eaten if someone eats cookies over two days?

Back

Add the number of cookies eaten on each day: Total = Day 1 + Day 2.

Front

What is the basic formula for addition?

Back

The basic formula for addition is: a + b = c, where a and b are the numbers being added, and c is the sum.

Front

What is the basic formula for subtraction?

Back

The basic formula for subtraction is: a - b = c, where a is the number from which another number is subtracted, b is the number being subtracted, and c is the difference.

Front

If you have 56 skittles and eat 17, how do you find out how many are left?

Back

Subtract the number of skittles eaten from the total: 56 - 17 = 39 skittles left.

Front

What is the term for a number that is being subtracted from another number?

Back

The number being subtracted is called the minuend.

Front

What is the term for a number that is subtracted from another number?

Back

The number that is subtracted is called the subtrahend.