Double Digit Addition

What is the importance of place value in addition?

• Place value helps in aligning numbers correctly for addition, ensuring that units, tens, hundreds, etc., are added in their respective columns.

• Place value is only important for multiplication, not addition.

• Place value determines the size of the numbers being added together.

• Place value is irrelevant in modern arithmetic operations.

What is the sum of 67 and 15?

• 80

• 81

• 82

• 83

What is the sum of 25 and 36?

• 58

• 59

• 60

• 61

How do you carry over in double digit addition?

• When the sum of the digits in a column exceeds 9, you carry over the tens digit to the next column.

• You simply add the digits without any changes.

• You ignore the tens digit and only write down the units digit.

• You subtract 10 from the sum and write down the result.

What is a common strategy for double digit addition?

• Add the units digits first, then the tens digits, and finally combine the results.

• Add the tens digits first, then the units digits, and finally combine the results.

• Multiply the tens digits and then add the units digits together.

• Subtract the units digits from the tens digits and then add the results.

What is the sum of 77 and 17?

• 90

• 92

• 94

• 96

What is the sum of 26 and 54?

• 70

• 75

• 80

• 85

What is double digit addition?

• The process of adding two single-digit numbers.

• The process of adding two numbers that each have two digits, resulting in a sum that may also be a two-digit or three-digit number.

• The process of subtracting two two-digit numbers.

• The process of multiplying two two-digit numbers.

What is the associative property of addition?

• The associative property of addition states that the way in which numbers are grouped when adding does not change the sum.

• The associative property of addition states that the order of numbers being added does not affect the sum.

• The associative property of addition states that adding zero to a number does not change the number.

• The associative property of addition states that the sum of two numbers is always greater than either number.

What is the result of adding two even numbers?

• An odd number

• An even number

• A prime number

• A negative number