Đáp án:
$=201,79$
Giải thích các bước giải:
$40,36 × 2 + 20,18 × 3+ 10,09 × 8 - 20,19$
$=40,36 × 2 + 20,18 × (2+1)+ 10,09 × 4×2 - 20,19$
$=40,36 × 2 + 20,18 × 2+20,18+ 40,36×2 - 20,19$
$=40,36 × 2 + 20,18 × 2+ 40,36×2 - 20,19+20,18$
$=40,36 × 2 + 40,36×1+ 40,36×2 - 20,19+20,18$
$=40,36 × 2 + 40,36×1+ 40,36×2 - (20,19-20,18)$
$=40,36 × 2 + 40,36×1+ 40,36×2 - 0,01$
$=40,36 × (2 + 1+ 2) - 0,01$
$=40,36 × 5 - 0,01$
$=201,8- 0,01$
$=201,79$
