邮政部门规定:信函重100克以内(包括100克)每20克贴邮票0.8元,不足20克重以20克计算;
\u90ae\u653f\u90e8\u95e8\u89c4\u5b9a\uff1a\u4fe1\u51fd\u91cd100\u514b\u4ee5\u5185\uff08\u5305\u62ec100\u514b\uff09\u6bcf20\u514b\u8d34\u90ae\u79680.8\u5143\uff0c\u4e0d\u8db320\u514b1\uff09\u82e5\u8981\u5bc4\u4e00\u5c01\u91cd35\u514b\u7684\u4fe1\u51fd\uff0c\u5219\u9700\u8d34\u90ae\u7968\u591a\u5c11\u5143\uff1f0.8*2=1.6\u5143\u3002
\uff082\uff09\u82e5\u5bc4\u4e00\u5c01\u4fe1\u51fd\u8d34\u4e866\u5143\u90ae\u7968\uff0c\u95ee\u6b64\u4fe1\u51fd\u53ef\u80fd\u6709\u591a\u5c11\u91cd\uff1f101\u514b~200\u514b\u4e4b\u95f4\u3002
\uff083\uff09\u4e03\uff081\uff09\u73ed\u6709\u4e5d\u4f4d\u540c\u5b66\u53c2\u52a0\u73af\u4fdd\u77e5\u8bc6\u7ade\u8d5b\uff0c\u82e5\u6bcf\u4efd\u7b54\u5377\u91cd12\u514b\uff0c\u6bcf\u4e2a\u4fe1\u5c01\u91cd4\u514b\uff0e\u8bf7\u4f60\u8bbe\u8ba1\u65b9\u6848\uff0c\u5c06\u8fd99\u4efd\u7b54\u5377\u5206\u88c5\u5728\u4e24\u4e2a\u4fe1\u5c01\u4e2d\u5bc4\u51fa\uff0c\u4f7f\u6240\u8d34\u90ae\u7968\u7684\u603b\u91d1\u989d\u6700\u5c11\u3002
A\uff1a12*8+4=100\u514b\uff084\u5143\uff09\uff0c12+4=16\u514b\uff080.8\u5143\uff09\u5408\u8ba14.8\u5143
B: 12*6+4=76\u514b\uff083.2\u5143\uff09\uff0c12*3+4=40\u514b\uff081.6\u5143\uff09\u5408\u8ba14.8\u5143\u3002
\uff081\uff0935\u514b=\uff0820+15\uff09\u514b\uff0c\u8d34\u90ae\u79680.8\u00d72=1.6\uff08\u5143\uff09\uff0e\u7b54\uff1a\u82e5\u8981\u5bc4\u4e00\u5c01\u91cd35\u514b\u7684\u4fe1\u51fd\uff0c\u5219\u9700\u8d34\u90ae\u79681.6\u5143\uff0e\uff082\uff09\u8bbe\u6b64\u4fe1\u51fd\u91cd\u91cf\u4e3ax\u514b\uff0c\u2235\u4fe1\u51fd\u91cd100\u514b\u4ee5\u5185\uff08\u5305\u62ec100\u514b\uff09\u6bcf20\u514b\u8d34\u90ae\u79680.8\u5143\uff0c\u2234\u4fe1\u51fd\u91cd100\u514b\u4ee5\u5185\uff08\u5305\u62ec100\u514b\uff09\u8d34\u7684\u90ae\u7968\u603b\u6570\u6700\u591a\u662f4\u5143\uff0c\u53c8\u6b64\u4fe1\u51fd\u8d34\u4e866\u5143\u90ae\u7968\u5927\u4e8e4\uff0c\u6240\u4ee5x\uff1e100\uff0c\u6839\u636e\u9898\u610f\u5217\u65b9\u7a0b\u4e3a\uff1a4+2\u00d7 x-100 100 \u22646\uff0c\u89e3\u5f97x\u2264200\uff0c\u6240\u4ee5\u6b64\u4fe1\u51fd\u7684\u91cd\u91cf\u5728\u5927\u4e8e100\u514b\u4e14\u5c0f\u4e8e\u7b49\u4e8e200\u514b\u8303\u56f4\u5185\u7684\u514b\u6570\u5747\u53ef\uff0e\uff083\uff09 \u4efd\u6570 \u91cd\u91cf\uff08\u514b\uff09 \u603b\u91d1\u989d\uff08\u5143\uff09 1 8 12+4=16 96+4=100 0.8+4=4.8 2 7 24+4=28 84+4=88 1.6+4=5.6 3 6 36+4=40 72+4=76 1.6+3.2=4.8 4 5 48+4=52 60+4=64 2.4+3.2=5.6 \u7b54\uff1a9\u4efd\u7b54\u5377\u52061\u4efd\u30018\u4efd\u62163\u4efd\u30016\u4efd\u88c5\uff0c\u603b\u91d1\u989d\u6700\u5c0f\uff0c\u5206\u522b\u4e3a4.8\u5143\uff0c4.8\u5143\uff0e
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绛旓細鈶犱竴灏侀噸35鍏嬬殑淇″嚱锛屾寜2涓20鍏嬭绠楋紝闇璐撮偖绁=0.8脳2=1.6鍏 鈶′竴灏佷俊鍑借创浜6鍏冪殑閭エ锛屽厛璐撮偖绁4鍏冿紝鍐嶈创閭エ2鍏冿紝姝淇″嚱閲瓒呰繃100鍏锛屼絾涓嶈秴杩200鍏 鈶㈡渶浣虫柟妗堟湁涓や釜锛氫竴涓俊灏佽8浠斤紝閲12脳8+4=100鍏嬶紝鎸100鍏嬭浠凤紝0.8脳5=4鍏 鍙︿竴涓1浠斤紝閲12脳1+4=16鍏嬶紝鎸20鍏嬭浠...
绛旓細閭斂閮ㄩ棬瑙勫畾:淇″嚱閲100鍏浠ュ唴(鍖呮嫭100鍏)姣20鍏嬭创閭エ0.8鍏,涓嶈冻20鍏嬮噸浠20鍏嬭绠;瓒呰繃100鍏,鍏堣创閭エ4鍏,瓒呰繃100鍏嬮儴鍒嗘瘡100鍏嬪姞璐撮偖绁2鍏,涓嶈冻100鍏嬮噸浠100鍏嬭绠.(1)鑻ヨ瀵勪竴灏侀噸... 閭斂閮ㄩ棬瑙勫畾:淇″嚱閲100鍏嬩互鍐(鍖呮嫭100鍏)姣20鍏嬭创閭エ0.8鍏,涓嶈冻20鍏嬮噸浠20鍏嬭绠;瓒呰繃100鍏,鍏堣创閭エ4鍏,瓒呰繃1...
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