Adding Three Two-Digit Numbers

Front

87 + 75 + 94 = ?

Back

256

Front

67 + 12 + 45 = ?

Back

124

Front

89 + 23 + 67 = ?

Back

179

Front

76 + 38 + 82 = ?

Back

196

Front

65 + 33 + 41 = ?

Back

169

Front

What is the sum of two two-digit numbers?

Back

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

Front

What is a two-digit number?

Back

A number that has two digits, ranging from 10 to 99.

Front

How do you add three numbers together?

Back

Add the first two numbers, then add the third number to the result.

Front

What is the commutative property of addition?

Back

The order of adding numbers does not change the sum.

Front

What is the associative property of addition?

Back

When adding three or more numbers, the way in which the numbers are grouped does not change the sum.