Question
Fill in the blank: $1$ billion = _____ million.
✓
Answer
$1$ billion $= 1000000000= 1000 \times 1000000 = 1000$ millions [$\because 1$ million $= 1000000]$
$\therefore 1$ billion $= 1000$ millions.
$\therefore 1$ billion $= 1000$ millions.
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