CSET Multiple Subjects Subtest 2: Math, Science questions answered 2023

CSET Multiple Subjects Subtest 2: Math, Science questions answered 2023Order 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 are blood cells created? in bone marrow