Adding and Subtracting Decimal Fractions: Summary: Adding and Subtracting Decimal Fractions
This clip summarizes the main points of adding and subtracting decimal fractions. It revisits the idea that adding decimal fractions depends on lining up the addends by place value. The clip says that the easiest way to do this is by lining up the d...
Adding and Subtracting Decimal Fractions: Lining Up Numbers on the Decimal Point
This clip explains the importance of lining up the addends by place value when adding decimal fractions. It notes that every decimal fraction has a decimal point and, "
if we line up one column, all the rest line up automatically. Tens, units, tent...
Adding and Subtracting Decimal Fractions: Adding Decimals to Solve a Distance Problem
This clip provides a distance problem which illustrates the fundamentals of adding decimal fractions. The clip suggests entering the decimal point of the answer before starting to add. It also suggests adding a zero to the right of the decimal point...
Adding and Subtracting Decimal Fractions: Five Steps For Adding Decimal Fractions
This clip explains the five-step sequence that should be followed when decimal fractions are added: first, put in any missing decimal points; second, write the addends in the column lining up the decimal points; third, fill in the gaps on the right ...
Adding and Subtracting Decimal Fractions: Adding Decimal Fractions
This clip explains that, when adding decimal fractions, it's a good idea to first insert the decimal point of the sum. Then, as with whole numbers, we start on the far right and work our way towards the left, adding up the numbers in each column as ...
Adding Signed Numbers: Using Parentheses in Adding Signed Numbers
This clip explains the use of parentheses to eliminate the confusion that might arise if two signs are written next to each other, as when adding a negative number. The clip notes that we don't run into this problem with positive numbers, because in...
Adding Signed Numbers: Summary: Adding Signed Numbers
This clip summarizes how to add signed numbers. It reviews two important rules, one pertaining to addition when the addends have the same sign, the other to addition when the addends have different signs. The clip also revisits the addition of 3 or ...
Adding Fractions With the Same Denominator: Changing Mixed Numbers to Improper Fractions
This clip explains that we have to change a mixed number to an improper fraction whenever we want to add, subtract, multiply or divide fractions. The clip then provides a shortcut for changing mixed numbers to improper fractions.
Adding Fractions With the Same Denominator: Summary: Adding Fractions With the Same Denominator
This clip summarizes adding fractions with the same denominator. It explains that the process can involve improper fractions as well as mixed numbers, and the conversion of mixed numbers to improper fractions and vice-versa.
Addition of Whole Numbers, Part 2: Carrying
This clip explains what it means to carry when adding multi-digit whole numbers.