Maths 4A pages 40 (ex 1), 42 (ex 1)- Homework pages 41 (ex 2, 4), 43 (ex 2, 4)

Maths 4A pages 40 (ex 1), 42 (ex 1)- Homework pages 41 (ex 2, 4), 43 (ex 2, 4)
Maths 4A pages 40 (ex 1), 42 (ex 1)- Homework pages 41 (ex 2, 4), 43 (ex 2, 4)
Maths 4A pages 40 (ex 1), 42 (ex 1)- Homework pages 41 (ex 2, 4), 43 (ex 2, 4)
Maths 4A pages 40 (ex 1), 42 (ex 1)- Homework pages 41 (ex 2, 4), 43 (ex 2, 4)
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คำแนะนำของผู้เขียน

Addition and Subtraction: revision + Mental addition + Mental subtraction