数学北师大版二年级上册做个乘法表.pptx

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1、做个乘法表四川师范大学附属圣菲小学李梅1、每位同学都要给其他组员说说你做乘法表的想法。2、怎么做才能做一份完整的乘法表。小组学习观察乘法表任务一：找出含有乘数3的乘法算式,圈出来.X1234567891X1=12X1=23X1=34X1=45X1=56X1=67X1=78X1=89X1=921X2=22X2=43X2=64X2=85X2=106X2=127X2=148X2=169X2=1831X3=32X3=63X3=94X3=125X3=156X3=187X3=218X3=249X3=2741X4=42X4=83X4=124X4=165X4=206X4=

2、247X4=288X4=329X4=3651X5=52X5=103X5=154X5=205X5=256X5=307X5=358X5=409X5=4561X6=62X6=123X6=184X6=245X6=306X6=367X6=428X6=489X6=5471X7=72X7=143X7=214X7=285X7=356X7=427X7=498X7=569X7=6381X8=82X8=163X8=244X8=325X8=406X8=487X8=568X8=649X8=7291X9=92X9=183X9=274X9=365X9=456X9=547X9=638X9

3、=729X9=81乘法表X1234567891X1=12X1=23X1=34X1=45X1=56X1=67X1=78X1=89X1=921X2=22X2=43X2=64X2=85X2=106X2=127X2=148X2=169X2=1831X3=32X3=63X3=94X3=125X3=156X3=187X3=218X3=249X3=2741X4=42X4=83X4=124X4=165X4=206X4=247X4=288X4=329X4=3651X5=52X5=103X5=154X5=205X5=256X5=307X5=358X5=409X5=4561X6

4、=62X6=123X6=184X6=245X6=306X6=367X6=428X6=489X6=5471X7=72X7=143X7=214X7=285X7=356X7=427X7=498X7=569X7=6381X8=82X8=163X8=244X8=325X8=406X8=487X8=568X8=649X8=7291X9=92X9=183X9=274X9=365X9=456X9=547X9=638X9=729X9=81乘法表观察乘法表任务二：找出积是18的乘法算式,圈起来.X1234567891X1=12X1=23X1=34X1=45X1=56X1=67

5、X1=78X1=89X1=921X2=22X2=43X2=64X2=85X2=106X2=127X2=148X2=169X2=1831X3=32X3=63X3=94X3=125X3=156X3=187X3=218X3=249X3=2741X4=42X4=83X4=124X4=165X4=206X4=247X4=288X4=329X4=3651X5=52X5=103X5=154X5=205X5=256X5=307X5=358X5=409X5=4561X6=62X6=123X6=184X6=245X6=306X6=367X6=428X6=489X6=5471X

6、7=72X7=143X7=214X7=285X7=356X7=427X7=498X7=569X7=6381X8=82X8=163X8=244X8=325X8=406X8=487X8=568X8=649X8=7291X9=92X9=183X9=274X9=365X9=456X9=547X9=638X9=729X9=81乘法表X1234567891X1=12X1=23X1=34X1=45X1=56X1=67X1=78X1=89X1=921X2=22X2=43X2=64X2=85X2=106X2=127X2=148X2=169X2=1831X3=32X3=63X

7、3=94X3=125X3=156X3=187X3=218X3=249X3=2741X4=42X4=83X4=124X4=165X4=206X4=247X4=288X4=329X4=3651X5=52X5=103X5=154X5=205X5=256X5=307X5=358X5=409X5=4561X6=62X6=123X6=184X6=245X6=306X6=367X6=428X6=489X6=5471X7=72X7=143X7=214X7=285X7=356X7=427X7=498X7=569X7=6381X8=82X8=163X8=244X8=325X8

8、=406X8=487X8=568X8=649X8=7291X9=9