CFA Grade 2: OA.2.1

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another. For example, if you have 10 apples and you give away 3, you have 7 apples left.

Front

What is addition?

Back

Addition is the process of combining two or more numbers to get a total. For example, if you have 5 candies and you get 3 more, you have 8 candies.

Front

What does 'left' mean in math problems?

Back

'Left' refers to what remains after something is taken away. For example, if you have 12 apples and give away 5, the number of apples left is 7.

Front

How do you write a subtraction equation?

Back

Front

What is a word problem?

Back

A word problem is a math problem written in words. It describes a situation that requires a mathematical solution.

Front

What is the total when you add two numbers?

Back

The total is the sum of the two numbers. For example, if you add 4 and 3, the total is 7.

Front

What does 'more' mean in math?

Back

'More' indicates an increase in quantity. For example, if you have 10 ducks and 5 more join, you now have 15 ducks.

Front

How do you find out how many are left?

Back

To find out how many are left, you subtract the number taken away from the total. For example, if you have 20 toys and give away 5, you have 15 toys left.

Front

What is the difference in subtraction?

Back

Front

What does 'join' mean in math problems?

Back

'Join' means to add to a group. For example, if 3 more ducks join 5 ducks, you have 8 ducks in total.