PPT模板下载:www.1ppt.com/moban/行业PPT模板:www.1ppt.com/hangye/节日PPT模板:www.1ppt.com/jieri/PPT素材下载:www.1ppt.com/sucai/PPT背景图片:www.1ppt.com/beijing/PPT图表下载:www.1ppt.com/tubiao/优秀PPT下载:www.1ppt.com/xiazai/PPT教程:www.1ppt.com/powerpoint/Word教程:www.1ppt.com/word/Excel教程:www.1ppt.com/excel/资料下载:www.1ppt.com/ziliao/PPT课件下载:www.1ppt.com/kejian/范文下载:www.1ppt.com/fanwen/试卷下载:www.1ppt.com/shiti/教案下载:www.1ppt.com/jiaoan/口答3×6=6×5=7×2=1×7=7×6=2×5=7×7=4×7=6×3=5×4=7×5=6×4=1874920304228351410182481624324048566416243240485664十六二十四三十二四十四十八五十六六十四二八()()八四十八五八()八()六十四四()三十二()八二十四十六四十八六八三323232484848565656881只螃蟹有几条腿?2只螃蟹几条腿呢?3只呢?4只呢?5只呢?6只呢?7只呢?8只呢?2×8=165×8=40(个)7×8=56(棵)看卡片口算,并说说分别用哪句口诀计算的!8╳5=8╳4=8╳2=8╳7=8╳1=8╳3=8╳8=8╳6=401686432562448填适当的数7╳()=568╳()=328╳()=40()╳()=24854812345678你能用口诀算一算吗?56123224641648214240244╳62╳66╳88╳87╳67╳85╳85╳48╳43╳82╳83╳7游戏:摘苹果20开火车口答:8×3=5×8=4×8=8×2=8×6=3×8=8×8=244032164824648×2=6×7=5×8=5×6=7×3=4×8=8×3=164240302132248×6=5×7=8×8=6×8=2×8=5×6=4×7=48356448163028