Question

Autumn collected 129 seashells at the beach. What is 129 rounded to the nearest ten ?

Answer 1

If you rounded off 129 to the nearest ten the answer would be 130

Answer 2

To round this to the nearest ten, find the ten position and then look to the right, at the ones, if it is 5 or more than round or change the tens by +1 if not, the number remains as is, followed by zeros.

129 is estimated to 130, since 9 is greater than 5 and 2 goes up by 1.