苏教版国标本数学二年级上册第八单元乘法口诀表.ppt

盱眙县旧铺实验小学 董德中,苏教版国标本第三册数学,乘法口诀表,一七得七,一七得七,一七得七,一七得七,二七十四,二七十四,二七十四,一七得七,二七十四,一七得七,二七十四,一八得八 二八十六 三八二十四四八三十二 五八四十 六八四十八七八五十六 八八六十四,一九得九 二九十八 三九二十七四九三十六 五九四十五 六九五十四七九六十三 八九七十二 九九八十一,乘法口诀表,你能很快在空格里填上两数相乘的积吗？,4,2,2,4,4,16,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,6 8 10 12 14 16 18,6 9 12 15 18 21 24 27,8 12 20 24 28 32 36,10 15 20 25 30 35 40 45,12 18 24 30 36 42 48 54,14 21 28 35 42 49 56 63,16 24 32 40 48 56 64 72,18 27 36 45 54 63 72 81,你能很快在空格里填上两数相乘的积吗？,4,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,16,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,4,72,81,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,4,72,81,你能很快在空格里填上两数相乘的积吗？,4,16,1,2,3,4,5,6,7,8,9,2,3,4,5,6,7,8,9,4,72,81,谁说的乘法口诀多,18,比一比,谁说的乘法口诀多,24,比一比,谁说的乘法口诀多,12,比一比,谁说的乘法口诀多,16,比一比,谁说的乘法口诀多,36,比一比,(36)四九三十六(63)七九六十三(24)()(45)()(21)()(18)()(27)(),照样子，写口诀,四六二十四,42,54,12,81,72,六七四十二,五九四十五,六九五十四,三七二十一,三四十二,三六十八,九九八十一,三九二十七,八九七十二,49,35,看谁算的又对又快,72 9=68=21 3=7 6=42 6=54 6=14 7=7 9=7 4=5 9=6 8=27 9=81 9=40 5=35 5=9 2=7 7=32 4=6 3+2=7 3+1=8 6-4=,8,42,2,45,9,18,20,48,7,63,48,8,49,22,7,9,28,3,7,8,44,