Khan Academy Static

Learn strategies for adding and subtracting numbers greater than 1000.

1204_Regrouping_borrowing_twice_example.html

1203_Borrowing_once_example_2.html

1202_Borrowing_once_example_1.html

1201_Multi_digit_addition_with_regrouping.html

1205_Alternate_mental_subtraction_method.html

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