把o,1,2,3,4,5,6,7,8,9,十个数一填在方框里,使等式成立都用减法答:3. 9-5=8-4=7-3=6-2=5-1
把0,1,2,3,4,5,6,7,8,9十个数填在空空里,使每个等式成立 □-□=□...答:9-8=7-6=6-5=5-4=4-3=3-2=2-1=1-0 满意望采纳~
把0,1,2,3,4,5,6,7,8,9十个数填在口里,使等式成立。(每个数只能用一次...答:把0,1,2,3,4,5,6,7,8,9十个数填在口里,使等式成立。(每个数只能用一次) 口一口=口一口=口一口=口一口=口一口 答:9-8=7-6=6-5=5-4=4-3=3-2=2-1=1-0或 9-4=8-3=7-2=6-1=5-0