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Revised by Yuting. 20141224
need to be modefied
Modify the content of the case1 in dividing_decimals_int_to_int_0.7.html
Modify the content of case 3 in dividing_decimals_int_to_int_0.7.html
Cancel the case4 in dividing_decimals_int_to_int_0.7.html
Remove the skip_counting_by_10s.html
[modify exercise]
Modify the content of case3 in dividing_decimals_int_to_int_0.7.html
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modified by ej
Merge branch 'dividing_decimals_int_to_int_0.7'
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modified by ej
Merge branch 'multiplying_fractions_and_whole_numbers_word_problems'