Preclosing

CHICAGO (AP) — Futures trading on the Chicago Board of Trade Tue:

Open High Low Last Chg. WHEAT 5,000 bu minimum; cents per bushel Mar 502½ 505¼ 489½ 490¾ —13¼May 505¼ 508½ 492 493 —14 Jul 508¼ 510¾ 496 497½ —11½Sep 517½ 519¾ 505½ 506½ —12½Dec 531¾ 534 520 521¼ —11¾Mar 542¾ 544¾ 532 532½ —10½May 542¾ 542¾ 537½ 538 —11 Jul 535¼ 535¼ 533¾ 533¾ —13¼Dec 561¾ 561¾ 561¾ 561¾ —3¼Mar 564½ 564½ 564½ 564½ —9½Est. sales 160,532. Fri.'s sales 195,089Fri.