VA SOL 2.CE.1 (2023) Addition and Subtraction within 20

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What is the sum of 14 and 6?

Back

20

Front

What is the difference when you subtract 10 from 16?

Back

6

Front

If you have 15 gummy bears and give away 4, how many do you have left?

Back

11 gummy bears.

Front

What is the missing number? 14 + ____ = 20

Back

6

Front

What is the missing number? 20 - ____ = 14

Back

6

Front

What is a double ten-frame?

Back

A double ten-frame is a tool used to visualize numbers up to 20, showing two rows of ten boxes.

Front

What is a related fact?

Back

A related fact is a mathematical statement that is connected to another, such as addition and subtraction facts.

Front

What is the commutative property of addition?

Back

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