乘法口诀(一)
一、数松果
同学们数一数3.1.1×5=5或5×1=52.2×5=10或5×2=103×5=15或5×3=15
我们边算边整理吧!
1×5=55×1=52×5=105×2=103×5=155×3=154×5=205×4=205×5=255×5=256×5=305×6=307×5=355×7=358×5=405×8=409×5=455×9=45一五得五二五一十三五十五四五二十五五二十五五六三十五七三十五五八四十五九四十五
填一填5×3=155×9=455×1=55×4=201×5=52×5=108×5=406×5=304×5=207×5=355×5=255×2=10
填一填:..........051020152530403555555555
算一算一共有多少个圆环?(3)(5)=(15)(只)×
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=二、摘桃子
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=10
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=1020
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=102015
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=10201535
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=102015355
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=10201535545
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=1020153554540
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=102015355454025
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=10201535545402510
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=1020153554540251035
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=102015355454025103515
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=1020153554540251035154030
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=102015355454025103515403020
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=10201535545402510351540302045
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=1020153554540251035154030204530
5x2=3x5=5x7=1x5=9x5=8x5=5x5=4x5=6x5=5x9=5x4=5x6=5x8=7x5=5x3=2x5=1020153554540251035154030204530
=5153×=385+
4×5○915○5+5+530○5×67×5○369×5○5×95×5○5+5=<=>>=
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