Đáp án:
`20,5dm³ - 25cm³ × 0,8`
`= 20,5 dm³ - 20 cm³`
`= 20,5 dm³ - 0,02 dm³`
`=20,48 dm³`
Vậy :
`⇒ 20,5dm³ - 25cm³ × 0,8= 20,48 dm³`
Vậy $20,5dm^3 - 25cm^3 * 0,8=20,48dm^3$
Giải thích các bước giải:
$20,5dm^3 - 25cm^3 * 0,8$
$=20,5dm^3 - 20cm^3$
$20cm^3=0,02dm^3$
$=20,5dm^3 - 0,02dm^3$
$=20,48dm^3$
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