在横线上填上“＞”“＜”或“=”。+r6m7Q+X-_1@1C0d
19.841^:N1Q'C;[9C7U*X+|5@/N14.89 0.84吨6t)R1X0.804吨+r6m7Q+X-_1@1C0d
5.7平方分米7F+q:h(p;w:j5V+f8|/B*a*P9F,D1E8b5平方米7平方分米+r6m7Q+X-_1@1C0d
81/100-s2L4g)d4}4`)@1h/`0.81 3.6+5.4.r'j.q8i+r6m7Q+X-_1@1C0d
5.4+3.6 （7.5+3.6）+2.55_7z6U-p*a/j0L'v1\7.5+2.5+3.6+r6m7Q+X-_1@1C0d