Evaluation Warning: The document was created with Spire.Doc for .NET.槐怪把方相茧屏臭寂肖旷曲妹茅竟惟...
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Evaluation Warning: The document was created with Spire.Doc for .NET.董迁椅雾柄胸涝迢汕畸拎鸽锌慈甸湛...
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Evaluation Warning: The document was created with Spire.Doc for .NET.郴经泣托碧谴螺教利蕉烫严氯联粘结...
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两位数乘两位数一、很快算出得数13×20 =?50×21=?50×30=?140÷2=70×15=?20×90=?800×60=?40×60=98×10...
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知识铺垫1、笔算3 23×3 2 13×4 4 12×9 69 6 38 8 2笔算乘法要注意哪些问题?多位数(两位数、三...
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一、问题引入1、口算天天练。76×10 = 20×13 =91×6 = 50×21 =52×30 = 25×7 =第...
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两位数乘两位数口算乘法1精选可编辑ppt口算:3×4 =20×4 =12+80 =6×3 =10×3 =18+30 =5×4 =20×4 =20+...
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两位数乘两位数口算乘法口算:3×4 =20×4 =12+80 =6×3 =10×3 =18+30 =5×4 =20×4 =20+80=12809218304...
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两位数乘两位数口算乘法两位数乘两位数《口算乘法》PPT课件口算:3×4 =20×4 =12+80 =6×3 =10×3 =18+30...
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两位数乘两位数整理课件一、口算。25×4=10024×40=96075×10=75090×10=90036×20=72080×20=1600990×10=...
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45×10=100 ×12=33×21≈40 ×12=140 ×2=450120048028041 ×30≈三位数乘两位数笔算乘法实验小学 王板...
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