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 stresses that it's important to ma...
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 ...
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 ...
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.
This clip explains what it means to carry when adding multi-digit whole numbers.
This clip summarizes the process of finding the sum of two or more whole numbers and, in so doing, revisits the use of expanded notation.
This clip explains that the basic idea behind adding whole numbers is combining smaller groups--called addends--to form a larger one--known as the sum.
This clip summarizes rounding numbers, explaining that, "
we use rounded numbers either when it's not important to know the exact ones, or when we can't find them." The clip then explains when and how we round up or down.
This clip presents the units of weight in the U.S. Customary System, then provides a number of practical problems that can be solved by using the equivalences for ounce, pound and ton.
This clip summarizes multiplying decimals through a review of key points introduced in the lesson. These include the rule for multiplying two or more decimals, a shortcut for multiplying decimals by powers of 10, and an explanation that the basic ru...