凑十加法、破十减法.ppt
凑十加法破十减法,编写：岭南趋势工作室 如有反馈请email至 Copyleft lingnanChase Studio For more info please email to ,特为小学一二年级学生 和学前班儿童编制,形象记忆1-9的图案,1,2,3,形象记忆1-9的图案,4,5,6,形象记忆1-9的图案,7,8,9,数字拆分,2,1,1,1 + 1 = 2 2 - 1 = 1,数字拆分,3,1,2,1 + 2 = 3 2 + 1 = 3 3 2 = 1 3 1 = 2,数字拆分,4,2,2,2 + 2 = 4 4 2 = 2,数字拆分,4,1,3,1 + 3 = 4 3 + 1 = 4 4 1 = 3 4 3 = 1,数字拆分,5,1,4,1 + 4 = 5 4 + 1 = 5 5 1 = 4 5 4 = 1,数字拆分,5,2,3,2 + 3 = 5 3 + 2 = 5 5 2 = 3 5 3 = 2,数字拆分,6,2,4,2 + 4 = 6 4 + 2 = 6 6 2 = 4 6 4 = 2,数字拆分,6,3,3,3 + 3 = 6 6 3 = 3,数字拆分,6,1,5,1 + 5 = 6 5 + 1 = 6 6 1 = 5 6 5 = 1,数字拆分,7,3,4,3 + 4 = 7 4 + 3 = 7 7 3 = 4 7 4 = 3,数字拆分,7,1,6,1 + 6 = 7 6 + 1 = 7 7 1 = 6 7 6 = 1,数字拆分,7,2,5,2 + 5 = 7 5 + 2 = 7 7 2 = 5 7 5 = 2,数字拆分,8,4,4,4 + 4 = 8 8 4 = 4,数字拆分,8,1,7,1 + 7 = 8 7 + 1 = 8 8 1 = 7 8 7 = 1,数字拆分,8,2,6,2 + 6 = 8 6 + 2 = 8 8 2 = 6 8 6 = 2,数字拆分,8,3,5,3 + 5 = 8 5 + 3 = 8 8 3 = 5 8 5 = 3,数字拆分,9,3,6,3 + 6 = 9 6 + 3 = 9 9 3 = 6 9 6 = 3,数字拆分,9,1,8,1 + 8 = 9 8 + 1 = 9 9 1 = 8 9 8 = 1,数字拆分,9,2,7,2 + 7 = 9 7 + 2 = 9 9 2 = 7 9 7 = 2,数字拆分,9,4,5,4 + 5 = 9 5 + 4 = 9 9 4 = 5 9 5 = 4,10的组合,你认识我吧，我是10哦,10的组合,1 + 9 = 10,9 + 1 = 10,10 - 1 = 9,10 9 = 1,1的补数是9 9的补数是1,所谓补数，就是相加等于10的两个数,10的组合,2 + 8 = 10,8 + 2 = 10,10 - 2 = 8,10 8 = 2,2的补数是8 8的补数是2,10的组合,3 + 7 = 10,7 + 3 = 10,10 - 3 = 7,10 7 = 3,3的补数是7 7的补数是3,10的组合,4 + 6 = 10,6 + 4 = 10,10 - 4 = 6,10 6 = 4,4的补数是6 6的补数是4,10的组合,5 + 5 = 10,10 5 = 5,5的补数是5,我们开始学凑十加法,9,+,7 =,+,凑十加,9 + 7 =,+,16,10,6,我是9，再补1就等于10,那我分1给你,凑十加,8,+,6 =,+,凑十加,8 + 6 =,+,14,10,4,那我分2给你,我是8，再补2就等于10,凑十加,6,+,5 =,+,凑十加,6 + 5 =,+,11,10,1,那我分4给你,我是6，再补4就等于10,凑十加,7,+,6 =,+,凑十加,7 + 6 =,+,13,10,3,那我分3给你,我是7，再补3就等于10,凑十加,9,+,3 =,+,凑十加,9 + 3 =,+,12,10,2,那我分1给你,我是9，再补1就等于10,小朋友你来算一算：,8,5 =,+,13,小朋友你来算一算：,8,6 =,+,14,小朋友你来算一算：,9,6 =,+,15,小朋友你来算一算：,9,4 =,+,13,小朋友你来算一算：,7,5 =,+,12,小朋友你来算一算：,7,4 =,+,11,小朋友你来算一算：,6,5 =,+,11,破十减,16,- 8 =,2,6,6减8不够减，就用10位来减8， 再加上个位数6,8,6,10,-8,+,破十减,15,- 9 =,1,5,5减9不够减，就用10位来减9， 再加上个位数5,6,5,10,-9,+,破十减,17,- 8 =,2,7,7减8不够减，就用10位来减8， 再加上个位数7,9,7,10,-8,+,破十减,11,- 4 =,6,1,1减4不够减，就用10位来减4， 再加上个位数1,7,1,10,-4,+,破十减,13,- 5 =,5,3,3减5不够减，就用10位来减5， 再加上个位数3,8,3,10,-5,+,破十减,14,- 7 =,3,4,4减7不够减，就用10位来减7， 再加上个位数4,7,4,10,-7,+,小朋友，现在你来练习,13,- 8 =,？,5,减法练习,14,- 6 =,？,8,减法练习,15,- 7 =,？,8,减法练习,16,- 9 =,？,7,减法练习,18,- 9 =,？,9,减法练习,17,- 8 =,？,9,你做对了吗？加油！,跳跳舞吧！,
