add and subtract within 20

Front

What is the result of 8 - 6?

Back

2

Front

What is the result of 6 + 10?

Back

16

Front

What is the result of 14 + 1?

Back

15

Front

What is the result of 16 + 4?

Back

20

Front

What is the result of 13 + 5?

Back

18

Front

What is the definition of addition?

Back

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

Front

What is the definition of subtraction?

Back

Subtraction is the mathematical operation of taking one number away from another.

Front

What is the sum of two numbers?

Back

The sum is the result of adding two or more numbers together.

Front

What is the difference between two numbers?

Back

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

Front

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

Back

A number line is a visual representation of numbers in a straight line, used to illustrate addition and subtraction by moving right for addition and left for subtraction.