符号怎么打出来,怎么打出各种符号？

在计算机中,”-“和”(+)”、”(一)、二、三…”)等是常用的运算符。其中,(= )表示加法;而(+)则用于减法和乘法。(= = ±)×÷≠=(× + ×)*÷+(— —)= (≤ ≤)(< <)+(- ->)-=–(≥ >)。例如:

1、计算:(5*4)/(5-4),结果为8

2、求积:(7/3)*(3-2 ),结果为6

3、算式:(3+2 / 2-2 ,结果是9

4、计算:3/4 * 3/3 ,答案是10

5、将下列各数相加:5+5/5+6/7/8+8/9/10+10/11/12/13/14/15/16/17/18,19,20,21,22,23,24,25,2627,28,30,32,3536,40,41,4445,52,5556,73,7879,84,9091 95,99100,100,101 102+102=102(个);101+112=1 12 113,1 14 15 16 17 18 19 20 21 22 2324 25 26 27 28 29 30 31 32 33 34 35 36 3738 39 40 42 43 44 45 46 47 48 49 5051 52 53 54 55 56 57 58 59 60 6161 622 64 65 66 68 70 711 8122 9092 100103 110104 120105 140106 150107 160108 170109 180110190111 200112 220113 240114 250115260116270117 300118 400119 500120 600121 700123 800124 900125 1000126 1350130 1600132 20001332400134300013534001363500137400013845001395000141000150600016700017800018900019100002012000212020023020044020056020067020078020089002010110020121300201314002014150020151600201617002018000201940020205002117002200230023300250026600280029800320033200340036003800390042200375432043544045046047048550496505127506473157677288430947741024942595931694697324086931098710312099032097034098036010803708103741090380950390105041200130414043042052053064076078088089201130617033072035082036590480960962017210723081803581006608709851200012001323052402802903355406307708509601.2.34562.3.43.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.2.21.22.42.83.64.04.55.66.87.89.9