Sam makes 5 rows of 3 shells and adds 4 more at the end. How many shells are there in all?
19 shells.
5 x 3 = 15, and 15 + 4 = 19.
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: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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