Christmas Math Flashcard yr 9

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another. For example, if you have 8 candy canes and Santa eats 3, you subtract 3 from 8 to find out how many are left.

Front

What is addition?

Back

Addition is the process of combining two or more numbers to find their total. For example, if there are 14 carolers in one group and 9 in another, you add 14 and 9 to find the total number of carolers.

Front

How do you find the total number of items after some are removed?

Back

To find the total after some items are removed, subtract the number of items removed from the original total. For example, if there are 30 cookies and 12 are eaten, you subtract 12 from 30.

Front

What is a word problem in math?

Back

A word problem is a mathematical question that is presented in the form of a story or scenario. It requires reading comprehension and problem-solving skills to find the answer.

Front

What does 'left' mean in a math problem?

Back

'Left' refers to the remaining amount after some have been taken away. For example, if Santa delivers gifts, the number of gifts left is what remains after delivery.

Front

What is the total of 60 bulbs if 12 go out and 6 are added?

Back

To find the total, subtract 12 from 60 and then add 6. So, 60 - 12 + 6 = 54 bulbs working.

Front

How do you calculate how many gifts are left to deliver?

Back

To calculate the gifts left, subtract the number of gifts delivered from the total number of gifts. For example, if Santa has 120 gifts and delivers 45 and 38, you subtract 45 + 38 from 120.

Front

What is the importance of checking your work in math?

Back

Checking your work helps ensure that your calculations are correct and that you have not made any mistakes. It is an important step in problem-solving.

Front

What is a group in math?

Back

A group in math refers to a collection of items or numbers. For example, a group of carolers can be counted as a total number of people.

Front

What does 'original group' mean?

Back

The 'original group' refers to the total number of items or people before any changes, such as additions or subtractions, are made.