This powerpoint presentation has 21 slides of Math Multiplication Tables :
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20
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Math Blog
By Jega Chinna
An easy visual way to learn 1s addition facts up to 15, especially for kids who are struggling. Will be posting addition facts to 15 in the next few weeks.