Question
Express $9\ cm\ 8\ mm$ as cm using decimal.
✓
Answer
$9 \ cm\ 8\ mm = 9 \ cm + 8\ mm = 9 \ cm + \frac { 8 } { 10 } \ cm..............[\because 1\ mm = \frac { 1 } { 10 } \ cm]$
$= 9 \ cm + 0.8 \ cm$
$= (9 + 0.8) \ cm = 9.8 \ cm$
$= 9 \ cm + 0.8 \ cm$
$= (9 + 0.8) \ cm = 9.8 \ cm$
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