Identify the place of the digit that you need to round
Look at the digit to its right, if it is 0, 1,2,3, or 4, the digit you are rounding stays the same; if the digit to the right is 5,6,7,8, or 9, the digit you are rounding increases by one.
The digits after the one you have rounded become zeros
Explicitly identify the role of each digit in the number, good strategy to eliminate errors.
Underline the digit that is to be rounded
Circle the digit that is the neighbor to the right
Put an x on each digit that will become zero
The numbers to the left of the rounded number stay the same
Play a matching game:
Write numbers on cards with instructions. For example, (1,234 is written on a card) The instruction will say “Round the number to the nearest ten”. The player will have to match the card with another card that has its answer.
In the beginning stages, your child can color code the numbers to identify numbers to be rounded and its neighbor.
Black- digits that stay the same
Blue- digit to be rounded
Red-neighbor to its right
Green-numbers that become zeros
Review 3 forms of writing a number:
Standard form- write numbers ( 1,349)
Word form- write with words (one thousand, three hundred forty-nine)