Toán Lớp 4: (2012×86+2012×14)x(1+2+3+…+9)x(45×12-9×69) tính nhanh
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Toán Lớp 4: (2012×86+2012×14)x(1+2+3+…+9)x(45×12-9×69) tính nhanh
Comments ( 2 )
= 2012x(86+14)
= 2012×100
= 201200