2nd Grade - Mental Math

Front

836 + 100

Back

936

Front

350 + 10

Back

360

Front

100 + 100

Back

200

Front

300 + 300

Back

600

Front

What is addition?

Back

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

Front

What is a sum?

Back

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

Front

What does it mean to add 10?

Back

Adding 10 means increasing a number by ten.

Front

What is the value of 100 + 200?

Back

300

Front

What is mental math?

Back

Mental math is doing calculations in your head without using paper or a calculator.

Front

What is the commutative property of addition?

Back

The commutative property states that changing the order of the numbers you are adding does not change the sum.