kirdy
kirdy kirdy
  • 06-04-2016
  • Mathematics
contestada

Dave collects rocks. he makes 12 groups of 10 rocks and has none left over. How many rocks does Dave have?

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janaelovexoxo
janaelovexoxo janaelovexoxo
  • 06-04-2016
that means he has 120 rocks
12*10=120

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Susuu
Susuu Susuu
  • 06-04-2016
12 groups, and each one containing 10. 
Think about it. Which operation could we use?

Multiplication!

12*10 = 120

Dave has 120 rocks. 

(One nice rock collection, Dave) 
;-) 
Answer Link

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