Toán Lớp 6: tính hợp lý 38.67 – 38 + 38.14
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Toán Lớp 6: tính hợp lý 38.67 – 38 + 38.14
Comments ( 2 )
$38.67-38+38.14$
$=38.67-38.1+38.14$
$=38.(67-1+14)$
$=38.(66+14)$
$=38.80$
$=3040$
$#thanhmaii2008$
38. 67-38+38. 14
=38.(67+14-1)
=38. 100
=3800