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《3、1～4的乘法口诀》集体备课PPT课件优质课下载
2 pencils
__ group of __
How many pencils in total?
1
2
1 x 2 =
One 2 is 2
2
2 × 1 =
2
One 2 is 2
2 groups
2 pencils in each group
__ groups of __
How many groups?
How many pencils in each group?
How many pencils in total?
2
2
Two 2s is 4
2 × 2 =
4
__ group of __
2 groups of 3
3 groups of 3