We will talk about pre algebra is the subject you need to understand before moving on to learn algebra. entity here. Let us have a look at the key topics of pre algebra you must know:
Negative numbers
Learn basic facts of adding, subtracting or multiplying negative numbers. For example, always remember:
o If both numbers have the same sign, the product is positive.
o If the numbers have different signs, the product is negative.
Adding odd and even numbers
Here, just remember:
o Even Number + Even Number = Even Number.
o Odd Number + Odd Number = Even Number.
o Even Number + Odd Number = Odd Number
Decimal numbers
While adding or subtracting decimal numbers, always place the numbers so that the decimal points are vertically aligned.
For example, 6.231 + 0.044 = 6.275.
While multiplying decimal numbers, multiply like you multiply whole numbers. Then add the decimal places in both numbers to find the position of the decimal point in the product.
The decimal point in the answer is placed just after the divisor a whole number. Then the decimal point in the dispute is moved to the right the same number of places. These the facts are vital in pre algebra.
Square Root
To learn square roots, remember the following formulas:
o Every positive real number n has two square roots
o Product Property: For all positive real numbers a and b,
o Quotient Property: For all positive real numbers a and b,
Reducing to low factors
Divide the top and the bottom by the same prime numbers until no more prime number can be found.
eg, 24/36 = 4/6 = 2/3
Converting mixed number to improper fraction
In this, remember the following formula:
Converting improper fraction to mixed number
Divide the denominator into the numerator. The reminder will be the numerator of the fraction of the mixed number.
Finally, just learn these topics and practice theme as much as possible. With time you will certainly master pre algebra, which will lay a good foundation for your algebra classes.
