湊十加法、破十減法（課堂PPT）

1、1 1湊十加法湊十加法破十減法破十減法編寫：嶺南趨勢工作室 如有反饋請email至 Copyleft lingnanChase StudioFor more info please email to 特為小學(xué)一二年級學(xué)生和學(xué)前班兒童編制2 2形象記憶1-9的圖案1233 3形象記憶1-9的圖案4564 4形象記憶1-9的圖案7895 5數(shù)字拆分2111 + 1 = 22 - 1 = 16 6數(shù)字拆分3121 + 2 = 32 + 1 = 33 2 = 13 1 = 27 7數(shù)字拆分4222 + 2 = 44 2 = 28 8數(shù)字拆分4131 + 3 = 43 + 1 = 44 1 = 34 3

2、 = 19 9數(shù)字拆分5141 + 4 = 54 + 1 = 55 1 = 45 4 = 11010數(shù)字拆分5232 + 3 = 53 + 2 = 55 2 = 35 3 = 21111數(shù)字拆分6242 + 4 = 64 + 2 = 66 2 = 46 4 = 21212數(shù)字拆分6333 + 3 = 66 3 = 31313數(shù)字拆分6151 + 5 = 65 + 1 = 66 1 = 56 5 = 11414數(shù)字拆分7343 + 4 = 74 + 3 = 77 3 = 47 4 = 31515數(shù)字拆分7161 + 6 = 76 + 1 = 77 1 = 67 6 = 11616數(shù)字拆分7252

3、 + 5 = 75 + 2 = 77 2 = 57 5 = 21717數(shù)字拆分8444 + 4 = 88 4 = 41818數(shù)字拆分8171 + 7 = 87 + 1 = 88 1 = 78 7 = 11919數(shù)字拆分8262 + 6 = 86 + 2 = 88 2 = 68 6 = 22020數(shù)字拆分8353 + 5 = 85 + 3 = 88 3 = 58 5 = 32121數(shù)字拆分9363 + 6 = 96 + 3 = 99 3 = 69 6 = 32222數(shù)字拆分9181 + 8 = 98 + 1 = 99 1 = 89 8 = 12323數(shù)字拆分9272 + 7 = 97 + 2 =

4、 99 2 = 79 7 = 22424數(shù)字拆分9454 + 5 = 95 + 4 = 99 4 = 59 5 = 4252510的組合你認識我吧，我是10哦262610的組合1 + 9 = 109 + 1 = 1010 - 1 = 910 9 = 11的補數(shù)是99的補數(shù)是1272710的組合2 + 8 = 108 + 2 = 1010 - 2 = 810 8 = 22的補數(shù)是88的補數(shù)是2282810的組合3 + 7 = 107 + 3 = 1010 - 3 = 710 7 = 33的補數(shù)是77的補數(shù)是3292910的組合4 + 6 = 106 + 4 = 1010 - 4 = 610 6

5、= 44的補數(shù)是66的補數(shù)是4303010的組合5 + 5 = 1010 5 = 55的補數(shù)是53131我們開始學(xué)湊十加法9+7 =+3232湊十加9 + 7 =+16106我是9，再補1就等于10那我分1給你3333湊十加8+6 =+3434湊十加8 + 6 =+14104那我分2給你我是8，再補2就等于103535湊十加6+5 =+3636湊十加6 + 5 =+11101那我分4給你我是6，再補4就等于103737湊十加7+6 =+3838湊十加7 + 6 =+13103那我分3給你我是7，再補3就等于103939湊十加9+3 =+4040湊十加9 + 3 =+12102那我分1給你我是9

6、，再補1就等于104141小朋友你來算一算：85 =+134242小朋友你來算一算：86 =+144343小朋友你來算一算：96 =+154444小朋友你來算一算：94 =+134545小朋友你來算一算：75 =+124646小朋友你來算一算：74 =+114747小朋友你來算一算：65 =+114848破十減16 - 8 =266減8不夠減，就用10位來減8，再加上個位數(shù)68610-8+4949破十減15 - 9 =155減9不夠減，就用10位來減9，再加上個位數(shù)56510-9+5050破十減17 - 8 =277減8不夠減，就用10位來減8，再加上個位數(shù)79710-8+5151破十減11 - 4 =611減4不夠減，就用10位來減4，再加上個位數(shù)17110-4+5252破十減13 - 5 =533減5不夠減，就用10位來減5，再加上個位數(shù)38310-5+5353破十減14 - 7 =344減7不夠減，就用10位來減7，再加上個位數(shù)47410-7+5454小朋友，現(xiàn)在你來練習(xí)13 - 8 =？55555減法練習(xí)1