Math for me
Subtracting Mixed-Numbers
1. Change fractional parts to equivalent fractions with the LCD as a denominator, if needed. 2. If necessary, borrow from the whole number to subtract fractions. 3. Subtract whole numbers and fractions separately. 4. Simplify the answer if necessary.
Ratios
A comparison of two quantities by division (X/Y or X:Y-- numerator associate with word "to" and denominator "of"
Repeating Decimals
A decimal whose decimal digits eventually repeat in the same pattern.
Round 76,502 to the nearest thousand
77,000
Lowest Common Multiple
the smallest multiple that is exactly divisible by every member of a set of numbers
Least Common Denominator
the smallest natural number that can be divided evenly by all denominators in the equation
853 66 4022 +3589
8530
9009 - 7964
1045
17,063 7 12 1,505 93,710 + 333
112,630
280 divided by 44,800=
160
85 (19)=
1615
7 x 6 x 4=
168
57 x 3000=
171,000
7381 x 603
4,450,743
5 x 5 + 8 (2)=
41
Use digits to write four hundred twenty-six thousand, five.
426,005
19,241 divided by 42=
458 R5
9075 - 2869
6206
Round 6347 to the nearest ten
6350
16 divided by 112,752=
7047
Improper Fractions
A fraction with a numerator greater than it's denominator.
Mixed-Numbers
A number written as the sum of an integer and a proper fraction. For example, 5¾. 5¾ is the sum 5 + ¾.
Expanded Form
A way to write numbers by showing the value of each digit. Example; 285=200+80+5
Standard Form
A way to write numbers by using digits
Word Form
A way to write numbers by using words.
Ordering Fractions
Convert all numbers to decimals, then order them from least to greatest.
Simplifying Fractions
Divide both numerator and denominator by the same value. Repeat until you cannot find a multiple of both.
Equivalent Fractions
Fractions that have the same value
Adding Decimals
Line up all the decimal points; put in zeros in as place holders so that all the numbers have the same number of decimal places; add or subract the numbers and place the decimal in the same place for the answer.
Write the number as a word: 9205
Nine thousand, two hundred five
Decimals
Numbers that use place value to show amounts less than one; a number with one or more places to the right of the decimal point (1.9 is closer to 2 than 1)
Comparing Decimals
To compare fraction and decimals, you must change all of the numbers to the same form. Either change all the numbers to fractions or all of the numbers to decimals. Then decide which is greater or less.
Comparing Fractions
To compare fractions you can find a common denominator or you can cross multiply. For the example above, the common denominator for both fractions would be 12. Rename the fractions to compare. You can also cross multiply 4 X 2 = 8 and 3 X 3 = 9. Therefore, 3/4 > 2/3
Write the number as a word: 25,065
Twenty-five thousand, sixty-five
835 over 0=
Undefined
Exponent
a mathematical notation indicating the number of times a quantity is multiplied by itself
Lowest Common Denominator
the smallest number, other than zero, that can be the denominator for two or more common fractions
Proportions
is an equation that states that two ratios are equal
Subtracting Decimals
line up the decimals, Add as normal, bring down the decimal into the difference
Dividing Decimals
move decimals point in the divisor (outside #) until the # is a whole number, move the decimals point the same # of places in the dividend (inside #)
Terminating Decimals
rational numbers in decimal form that have a finite number of digits: ex) 1.5,2.75, 4.0
Missing Number
the number missing from a problem, creating the problem, the mystery number, _______ + 2 = 5, missing number wuold be 3
Order of operations
the order in which operations in an expression to be evaluated are carried out. 1. parentheses 2. exponets 3. multiplication and divison 4. addition and subtraction
