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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math
Early math
Addition and subtraction within 100
Subtracting 1s and 10s
Subtracting 1s or 10s (no regrouping)
Subtracting 1s or 10s (no regrouping)
Practice solving problems like 67-5 and 67-50.
License: Special Permissions by Khan Academy
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