CSET Multiple Subjects Subtest 2: Math, Science 100% SOLUTION 2023//2024

CSET Multiple Subjects Subtest 2: Math, Science 100% SOLUTION 2023//2024 Order of Operations - ANSWER 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? - ANSWER multiply all the denominators How do you multiply fractions? - ANSWER multiply numerator x numerator mutiply denominator x denominator (don't need a common denominator) how do you divide fractions? - ANSWER flip the second fraction and then multiply Z^-2 - ANSWER 1 --- z x z perfect square number - ANSWER 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? - ANSWER A (B+C) = AB + AC what is the opposite of distributing? - ANSWER factoring what does the commutative property of addition and multiplication tell us? - ANSWER 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? - ANSWER grouping does not matter A + (B + C) = (A + B) + C identity property of addition - ANSWER any number + 0 equals itself identity property of multiplication - ANSWER any number x 1 equals itself cerebral cortex - ANSWER part of the nervous system; 4 lobes, spatial awareness, consciousness, language, vision (thinking) cerebellum - ANSWER part of the nervous system; gray area in back, timing of motor movement brain stem - ANSWER part of the nervous system; cord, life support, respiration, heartbeat, active during sleep digestive system - ANSWER 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 - ANSWER take blood from the heart out to the body take blood back to the heart where are blood cells created? - ANSWER in bone marrow white blood cells red blood cells - ANSWER healers, help fight diseases carry oxygen and nutrients what is the key advantage of sexual reproduction? (as opposed to asexual reproduction) - ANSWER greater genetic variation (there can be many types of an organism) how do the following plants reproduce? algae fungi ferns angiosperms gymnosperms - ANSWER algae - asexually fungi - asexually ferns - both asexually and sexually angiosperms (flowering plants) - sexually gymnosperms (cone plants) - sexually What evidence supports Darwin's theory of evolution (adaptation)? - ANSWER fossil records comparative anatomy DNA sequences taxonomy - ANSWER categorizing livi