UPSKILL MATH PLUS

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In the Land of Tens, there are special calculators with special buttons.
 
The Thoughtful Thousands only has a \(+1000\) button. How many times should it be pressed to show:
 
a) Three thousand \(=\) times.
 
The Handy Hundreds only has a \(+100\) button. How many times should it be pressed to show:

b) 85000 \(=\)   times.