Divide 30 by half and add 10. What do you get?
70
Dividing 30 by half is the same as dividing by 0.5 (or multiplying by 2), which gives 60. Adding 10 makes 70.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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