Addition and Subtraction of Decimals through Ten Thousandths

Addition and Subtraction of Decimals through Ten Thousandths

• Lesson Objectives

• After going through this lesson, you are expected to add and subtract decimals and mixed decimals through ten thousandths without or with regrouping. 

• Tip on Rounding off Numbers

• Add 1 to the digit in the rounding place if the digit to its right is 5 or greater otherwise leave the digit unchanged. Drop all digits after the rounding place. 

  
  

STEPS ON ADDING AND SUBTRACTING DECIMALS

• Arrange the digits in columns and align the decimal points.

• Insert zeros in empty decimal place values (if needed) so that all of the numbers have the same number of decimals places. 

• Add or subtract as with whole numbers.

STEPS ON ADDING AND SUBTRACTING DECIMALS

Arrange the digits in columns and align the decimal points.

Insert zeros in empty decimal place values (if needed) so that all of the numbers have the same number of decimals places. 

Add or subtract as with whole numbers.

STEPS ON ADDING AND SUBTRACTING DECIMALS

• Arrange the digits in columns and align the decimal points.

• Insert zeros in empty decimal place values (if needed) so that all of the numbers have the same number of decimals places. 

• Subtract as with whole numbers.

POLYA'S 4 - STEP PROCESS

• Understand

• Plan

• Solve

• Check