Square Roots: Point About Square Roots of Non-Whole Numbers, A
This clip explains that the square roots of non-whole numbers aren't terminating or repeating decimals. "They just keep going in a mixed up sort of way with no pattern at all," the clip states.
Square Roots: Square Roots Increase More Slowly Than Their Squares
This clip references the square roots of 50 and 100 to make the point that square roots increase more slowly than their squares.
Square Roots: Summary: Square Roots
This clip summarizes square roots. It revisits the meaning of square roots and squares, then reminds us of the usefulness of square root tables. The clip also mentions that decimal square roots are neither terminating no..
Square Roots: Useful Trick Involving Square Roots, A
This clip explains what it calls a useful trick that makes it possible for us to get " extra mileage out of the square root table." The clip says that if we can factor a number into smaller factors, we can find its squa..
Square Roots: Using a Square Root Table
This clip explains that all numbers have a square root, but not all square roots are whole numbers; many are decimals. The clip then states that, " there are ways to figure out square roots, but none of them are very pl..
Subtracting Fractions: Comparing Fractions With Different Denominators
This clip explains that comparing two fractions that don't have the same denominator requires multiplying the two denominators in order to find the common denominator of the fractions in question.
Subtracting Fractions: Comparing Fractions With the Same Denominator
This clip explains that if two fractions have the same denominator, the number with the bigger numerator will be to the right of the other on the number line.
Subtracting Fractions: Subtracting Fractions With Different Denominators
This clip explains that subtracting fractions with different denominators requires first writing the two fractions with a common denominator. Once the numerators are determined, it is simply a matter of subtracting the s..
Subtracting Fractions: Subtracting Fractions With the Same Denominator
This clip explains that subtracting fractions which have the same denominator simply requires that the smaller of the numerators be subtracted from the larger of the numerators, all over the denominator.
Subtracting Fractions: Subtracting Mixed Numbers
This clip explains that, when subtracting mixed numbers, " the safest thing is to change them both to improper fractions and use the rules for fractions."