Anastasia had 10 buckets of mulch for her garden. if colby used 3 2/7 buckets of anastasia's mulch, how many buckets were left? leave answer as a mixed number with a space between the whole number and the fraction

To answer this question you will subtract.  We have a total amount of mulch that we are taking some away from.  It would be 10 - 3 2/7.  Here are two ways to show how to subtract.

1.  Regroup the 10 whole to be able to subtract with common denominators.

      10        =  9 7/7
   -   3 2/7  = -3 2/7
                     6 5/7

or  

2.  Make 10 whole into an improper fraction with a denominator of 7. 

    10 =         10/1 = 70/7
     -3 2/7 =  23/7 = -23/7
                                47/7
   47/7 = 6 5/7

Hope this helps!!