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Secure Fluency in Addition and Subtraction Crossing Ten

Secure Fluency in Addition and Subtraction Crossing Ten

Number Facts
Year 3
Set status
Hugo Cheyneover 1 year ago
https://www.khanacademy.org/math/cc-2nd-grade-math/x3184e0ec:add-and-subtract-within-20

Full interactive unit on Khan Academy to practice addition and subtraction within 20.

Hugo Cheyneover 1 year ago
https://www.khanacademy.org/math/cc-2nd-grade-math/x3184e0ec:add-and-subtract-within-20/x3184e0ec:subtract-within-20/e/subtraction_2

Interactive exercise to practice subtraction within 20.

Hugo Cheyneover 1 year ago
https://www.khanacademy.org/math/cc-2nd-grade-math/x3184e0ec:add-and-subtract-within-20/x3184e0ec:add-within-20/e/addition_2

Interactive exercise to practice addition within 20.