addition

What is the recommended method for adding numbers, as described in the passage 'Understanding Addition'?

Rounding the numbers to the nearest tens or hundreds makes it simpler to estimate the sum to be around ___.

What is the recommended approach for adding multiple numbers?

• Start from the leftmost digit and work towards the right

• Start from the middle digit and work outwards

• Start from the rightmost digit and work towards the left

• Start from the center and work in a circular pattern

What is the purpose of estimating sums when dealing with large numbers?

• To make calculations easier

• To round numbers to the nearest tens or hundreds

• To avoid errors in calculations

• To simplify complex addition problems

What is carrying over in addition?

• When the sum of the digits in a column is greater than 9

• When the sum of the digits in a column is less than 9

• When the sum of the digits in a column is equal to 9

• When the sum of the digits in a column is not relevant