7899/9 = add up four numbers (7899), 33, divide by 9, 3 2/3, write 2/3 as the remainder, remember the 3 add up three numbers (789)+3, 27, write 7, remember 2 add up two numbers (78)+2, 17, write 7, remember 1 add up one number (7)+1, 8, write 8 answer is 877 2/3
999/9 = add up three numbers (999), 27, divide by 9, 3, write nothing as the remainder, remember 3 add up two numbers (99)+3, 21, write 1, remember 2 add up one number (9)+2, 11, write 1, remember 1 write 1 answer is 111
95634/278 = 956-600-210-24 = 122, 278x4, i would say about 344
88ft/s is 60 mph 33ft/s is 22.5 mph (3/8) (88) = 33 (3/8) (60) = 22.5
a^2 + (3a)^2 = 10 a^2
22^2 + 66^2 = 484 x 10 = 4840
a^2 + b^2 - (a-b)^2 = 2ab
58^2 + 55^2 - 3^2 = 110 x 58 = 6380
524^2 = square the 4, 16, write 6 remember 1 multiply 52, 4, 2, add 1, write 7 remember 41 square the 52, add 41, write 2745 answer is 274576
sum of PID of 112 = prime factor 112, 2^4 x 7 prime factors with exponents = 1, 7^1, add 1 to prime factor, 7+1, 8, remember 8 prime factors with exponents > 1, 2^4, add 1 to exponent, 2^(4+1), 2^ 5, subtract one, 2^5-1, 31, and divide by prime factor minus 1, 31/(2-1), 31, remember 31 mulltiply, 8 x 31, 248 answer is 248
num of PID of 112 = prime factor 112, 2^4 x 7 add 1 to each exponent and multiply, 5x2, 10 answer is 10
24^2+38^2 = let a=2, b=4, c=3, and d=8 ab^2 + cd^2 = (a^2 + b^2)(101) because a+d=10 and b=c+1 answer is 2020 10 PID, 1, 112, 2, 56, 4, 28, 8, 14, 16, 7