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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,10,以内的数的加减法,3,2,1,2,1,1,5,3,2,摆一摆,再说算式,返回,5,2,3,返回,-,=,看图,列算式,5,5,0,返回,看谁算得又对又快。,5+0=,2-0=,1+4=,4-2=,4+1=,2+3=,4-1=,2+2=,4-4=,5-3=,3+1=,3-3=,返回,返回,8,9,8,1,返回,+,=,7,2,9,-,=,9,7,2,+,=,2,7,9,-,=,9,2,7,返回,+,=,6,4,10,-,=,10,6,4,+,=,4,6,10,-,=,10,4,6,看图写算式:,返回,填一填,3,7,2,8,5,10,10,10,4,10,6,5,返回,返回,+,=,+,4,3,3,10,返回,-,=,-,9,4,2,3,返回,+,=,-,7,2,3,8,返回,按从左往右的次序算。,5+2+3=,7,10,7-2-3=,5,2,4+1+5=,5,10,8-3-4=,5,1,返回,看谁做得快!,10-4+2=,2+6+1=,8-3-5=,4+2+1=,7-2+4=,6-3-1=,9-2-1=,3+2-4=,6+3-3=,返回,+,=,10,5,15,-,=,15,5,10,+,=,5,10,15,-,=,15,10,5,返回,9,+,7,=,16,1,6,10,9,+,9,=,18,1,8,10,填一填,返回,8,+,7,=,15,2,5,10,6,+,6,=,12,4,2,10,填一填,返回,8,+,9,=,17,2,7,10,8,+,9,=,17,7,1,10,填一填,比一比。,返回,怎样想能很快说出得数。,5,+,7,=,5,+,8,=,小数加大数,一般是看做大数加小数进行计算。,12,13,返回,9+2,8+3,7+4,6+5,5+6,4+7,3+8,2+9,9+2,8+4,7+5,6+6,5+7,4+8,3+9,9+3,8+5,7+6,6+7,5+8,4+9,9+4,8+6,7+7,6+8,5+9,9+5,8+7,7+8,6+9,9+6,8+4,7+5,9+3,8+8,7+9,9+7,8+9,9+8,9+9,20,以内进位加法表,1,、竖着看,各列是怎样排列的?,2,、横着看,各行是怎样排列的?,3,、你还发现什么有规律的排列?,4,、这些题你是怎样算的?,返回,
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