Tutoring on Decimals

Learning Objectives:

Understand and Apply Decimals.

Math Tutoring on Decimals


Decimal Notation is used to write numbers according to Place Value in Base-10. A Decimal Point is used to separate whole numbers from numbers less than ‘1’. For example:

The runner finished in 10.3 seconds or The Dow was up 124.6 points today etc.

Procedure to Rounding Numbers in Decimal Notation:

1.   Identify the round-off value.

2.   If the digit to the right of the round-off place value is less than 5, do not change the round-off place digit.

3.   If the digit to the right of the round-off place value is 5 or more, increase the round-off place digit by 1.

4.   In either case, drop all digits to the right of the round-off place value.

By rounding we determine what number a given number is closer to.


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Hook Questions:

1.    How is Decimal Notation used to write numbers?

2.    What are procedures to rounding numbers in Decimal Notation?



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