1、数学闯关,第一关,分解组成,10,2,8,15,4,（ ）,7,5,2,18,2,（ ）,8,3,5,20,5,（ ）,9,5,4,11,4,（ ）,11,16,15,7,12,5,7,14,1,（ ）,7,3,4,17,4,（ ）,8,6,2,8,2,（ ）,9,2,7,9,7,（ ）,13,13,6,2,第二关,口算小火车,15+9 =,17+3 =,10+10=,16+9 =,14+9 =,24,20,20,25,25,1,25-3=,30-20=,35-4=,90-20=,32-2=,22,10,31,70,30,2,12+4 =,19+5 =,13+7 =,20+4 =,12+2 =
2、,16,26,20,24,14,3,16 + 1 =,12 + 2 =,15+5 =,17+9 =,14+4=,17,14,20,26,18,4,13 + 1 =,2 + 14 =,1 + 5 =,6 + 2 =,7 + 1 =,14,16,6,8,8,5,2 + 2 =,4 + 1 =,3 + 2 =,2 + 6 =,7 + 1 =,4,5,5,8,8,6,5 + 1 =,3 + 3 =,4 + 2 =,3 + 1 =,2 + 3 =,6,6,6,4,5,7,3 + 2 =,4 + 1 =,1 + 3 =,2 + 4 =,6 + 2 =,5,5,4,6,8,第三关,找出朋友,4,3+5,4+
3、2,1+4,2+5,5+2,5+3,2+4,4+1,3,2,1,4,3+5,4+2,1+4,2+5,5+2,5+3,2+4,4+1,3,2,1,4,3+5,4+2,1+4,2+5,5+2,5+3,2+4,4+1,3,2,1,4,3+5,4+2,1+4,2+5,5+2,5+3,2+4,4+1,3,2,1,4,3+5,4+2,1+4,2+5,5+2,5+3,2+4,4+1,3,2,1,4,3+5,4+2,1+4,2+5,5+2,5+3,2+4,4+1,3,2,1,互 换 法,6+4=,4+5=,3+5=,6+5=,5+7=,5+6=,4+6=,7+5=,互 换 法,5+4=,5+3=,9,8,10,11,12,8,9,11,12,10,第四关,看谁算得快,8,1 + 5 =,3 + 3 =,4 + 2 =,2 + 3 =,3 + 1 =,6,6,6,5,4,9,3 + 3 =,2 + 3 =,5 + 1 =,6 + 2 =,1 + 4 =,6,5,6,8,5,10,2 + 6 =,3 + 2 =,1 + 5 =,4 + 2 =,3 + 4 =,8,5,6,6,7,
