连加连减_及计算20以内不进位不退位加减法.doc

一；连加连减及加减混合。7+5+3= 6+9+2= 5+2+4= 3+7+5= 6+3+2= 5+4+2= 7+4+2= 6+2+1=10-4-3= 13-4-7= 9-5-4= 12-6-5= 18-10-8= 15-5-10= 9-3-1= 13-7-5=13-7+4= 15-6+2= 4+8-5= 5+6-7= 7+7-6= 8+5-8= 16-9-5= 10-7+5=二；计算。19-5= 14-3= 12-2= 16-5= 19-8= 17-3= 18-6= 14-3= 11-0=12+3= 19+1= 16+4= 17+3= 18+2= 19+1= 15+5= 13+7= 11+9=11-1= 12-2= 13-3= 14-4= 15-5= 16-6= 17-7= 18-8= 19-9=12+2= 14+4= 16+1= 13+4= 16+3= 17+2= 13+6= 14-3= 12-5=一；连加连减及加减混合。7+5+3= 6+9+2= 5+2+4= 3+7+5= 6+3+2= 5+4+2= 7+4+2= 6+2+1=10-4-3= 13-4-7= 9-5-4= 12-6-5= 18-10-8= 15-5-10= 9-3-1= 13-7-5=13-7+4= 15-6+2= 4+8-5= 5+6-7= 7+7-6= 8+5-8= 16-9-5= 10-7+5=二；计算。19-5= 14-3= 12-2= 16-5= 19-8= 17-3= 18-6= 14-3= 11-0=12+3= 19+1= 16+4= 17+3= 18+2= 19+1= 15+5= 13+7= 11+9=11-1= 12-2= 13-3= 14-4= 15-5= 16-6= 17-7= 18-8= 19-9=12+2= 14+4= 16+1= 13+4= 16+3= 17+2= 13+6= 14+3= 12+5=一；连加连减及加减混合。7+5+3= 6+9+2= 5+2+4= 3+7+5= 6+3+2= 5+4+2= 7+4+2= 6+2+1=10-4-3= 13-4-7= 9-5-4= 12-6-5= 18-10-8= 15-5-10= 9-3-1= 13-7-5=13-7+4= 15-6+2= 4+8-5= 5+6-7= 7+7-6= 8+5-8= 16-9-5= 10-7+5=二；计算。19-5= 14-3= 12-2= 16-5= 19-8= 17-3= 18-6= 14-3= 11-0=12+3= 19+1= 16+4= 17+3= 18+2= 19+1= 15+5= 13+7= 11+9=11-1= 12-2= 13-3= 14-4= 15-5= 16-6= 17-7= 18-8= 19-9=12+2= 14+4= 16+1= 13+4= 16+3= 17+2= 13+6= 14-7= 12+7=一；连加连减及加减混合。7+5+3= 6+9+2= 5+2+4= 3+7+5= 6+3+2= 5+4+2= 7+4+2= 6+2+1=10-4-3= 13-4-7= 9-5-4= 12-6-5= 18-10-8= 15-5-10= 9-3-1= 13-7-5=13-7+4= 15-6+2= 4+8-5= 5+6-7= 7+7-6= 8+5-8= 16-9-5= 10-7+5=二；计算。19-5= 14-3= 12-2= 16-5= 19-8= 17-3= 18-6= 14-3= 11-0=12+3= 19+1= 16+4= 17+3= 18+2= 19+1= 15+5= 13+7= 11+9=11-1= 12-2= 13-3= 14-4= 15