小升初奥数模拟题及答案

(2)\r/ ø3 5\r1 1 1 1_\r+ " + ÷ (3)\r/ X3 6\r1 1 1\r+ " © + ù (4)\r4 X5 ` 4\r(1) + (2) +(3)+ 2 X ( 4 ) Ü\r3X ( - + ÷ + ÷ + ÷ + ÷ )=1,“úsñ5 pìí,B3 ?s‚ûñòìó.\rü x2 x3 x4 x5\r12 . p\r30.\r°Š 31=7+11+13, 32=7X3+11, 33=7+13X2, 34=7X3+13, 35=11X2+13, 36=11X2+7X2,\r37=11+13X2.\rÓpþÿ 0@P`p??,\r??,7 ??.\r13 . !"#A,%C,O,E)*+,-./0)12.34,-.56,7\r34 38,33,33,3\r:;<=>?@ABCDAEF1,GEHIF1.\r14 . JJKLMNOPQRLSNOPQ#MTU 12WX#PQU 4 WX.YZP\rQ[JJ\]^_`1:3.\rJJLMNOPQU 4 WX,?bMcdX#PQU 4 X fWX.?PQ?g8 2hXU\r3\r 4 i 4x1 = 5 mWXn#op2hU1 WX.\r3 3 3\rPQKqrRJJLSNOsMTU 8 WX,tucd48 + ^=24m2hn#xyJJL\r3\rSNOPQ48+24=32m2n#z8 * 322.