CSET Multiple Subjects Subtest 2: Math, Science Latest 2023 Graded A+

CSET Multiple Subjects Subtest 2: Math, Science Latest 2023 Graded A+ Order of Operations PEMDAS Parentheses Exponents Multiplication Division Addition Subtraction (between roots and exponents, do whatever comes first in the problem) What is the easiest way to find a common denominator? multiply all the denominators How do you multiply fractions? multiply numerator x numerator mutiply denominator x denominator (don't need a common denominator) how do you divide fractions? flip the second fraction and then multiply Z^-2 1 --- z x z perfect square number Taking a positive integer and multiplying it by itself equals a perfect square. Example: 3 x 3 = 9 9 is a perfect square. what is the distributive property? A (B+C) = AB + AC what is the opposite of distributing? factoring what does the commutative property of addition and multiplication tell us? order does not matter a + b = b + a a x b = b x a what does the associative property of addition and multiplication tell us? grouping does not matter A + (B + C) = (A + B) + C identity property of addition any number + 0 equals itself identity property of multiplication any number x 1 equals itself cerebral cortex part of the nervous system; 4 lobes, spatial awareness, consciousness, language, vision (thinking) cerebellum part of the nervous system; gray area in back, timing of motor movement brain stem part of the nervous system; cord, life support, respiration, heartbeat, active during sleep digestive system salivary glands - produce saliva to get food down esophagus esophagus - passageway for food stomach - uses gastric acid and enzymes to break down food even more pancreas - creates enzymes that stomach uses small intestine - long, absorption of nutrients into body takes place here large intestine - waste is collected rectum - waste is released arteries veins take blood from the heart out to the body take blood back to the heart where