Sunday, February 7, 2016

Abacus Lesson 8: Simple additions, 100's column

412 + 51
321 + 122
491 + 507

89 + 210
241 + 102
224 + 555
901 + 56

Do worksheet now


Video:


Acknowledgement: Credit to HEV Project. This post is a summary of HEV Abacus Lessons
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