Adding Signed Numbers: Practical Problems: Temperature and Distance
This clip provides two short exercises, one dealing with temperature changes, the other with changes in direction, to illustrate how to solve practical problems involving the addition of signed numbers.
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 r..
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..
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 t..
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 t..
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, f..
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 aut..
Adding and Subtracting Decimal Fractions: Subtracting Decimal Fractions
This clip explains that, as with adding decimal fractions, subtracting decimal fractions entails following a five-step process. The only difference, the clip points out, is that we subtract instead of add. The clip stres..
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 ..
Addition of Whole Numbers, Part 2: Carrying
This clip explains what it means to carry when adding multi-digit whole numbers.