SAT Subject Test Mathematics Level 1
find the length of AC in terms of Cross multiply to get 5(AC) = 8 x, or Divide this result by 2 si ...
In this type of triangle, the legs are x and Therefore, the height of the triangle is units long. Now t ...
As shown above, the radius is therefore 5 units. The area of the circle is A = πr^2 = 25π. The area ...
42 . B The domain of this function would be the real numbers, with the exception of any numbers that ...
probability of not drawing a T is The probability of this compound event is 46 . C This is a calcula ...
The formula for the area of a triangle is Because the area is given as 15 square units, and the height i ...
Multiply both sides by 18, and x = 18 × sin(42°). x = 12.04 to the nearest hundredth. ...
100 Essential Math Concepts The math on the SAT subject tests covers a lot of ground—from arithmetic to algebr ...
2 . Adding/Subtracting Signed Numbers To add a positive and a negative number, first ignore the signs and find ...
NUMBER OPERATIONS AND CONCEPTS PEMDAS, which means Parentheses first, then Exponents, then Multiplication and Divisi ...
DIVISIBILITY 8 . Factor/Multiple The factors of integer n are the positive integers that divide into n with ...
12 . Greatest Common Factor (GCF) To find the greatest common factor of two or more integers, break do ...
FRACTIONS AND DECIMALS 10 if the last digit is 0. The last digit of 665 is 5, so 665 is a multiple of ...
21 . Dividing Fractions To divide fractions, invert the second one and multiply. 22 . Mixed Numbers and Improper ...
One way to compare fractions is to re-express them with a common denominator. and is greater than ...
PERCENTS The key to solving most fraction and percent word problems is to identify the part and the whole. Us ...
RATIOS, PROPORTIONS, AND RATES 30 . Finding the Original Whole To find the original whole before a percent ...
sum of the numbers. If the ratio of males to females is 1 to 2, then the males-to-people ratio is and ...
AVERAGES Average rate is not simply the average of the rates. To find the average speed for 120 miles at 40 mph ...
39 . Using the Average to Find the Sum Sum = (Average) × (Number of terms) If the average of 10 numbers is 5 ...
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