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)

คำแนะนำของผู้เขียน

Addition and Subtraction: revision + Mental addition + Mental subtraction