John, Mary, and Carol are putting a puzzle together. John has found 35 pieces and Mary has found 28. If there are 100 pieces in the puzzle, how many pieces are left for Carol to find?

Respuesta :

35 + 28 = 63
100 - 63 =  37 pieces left for Carol to find.
35 plus 28 equals 63. 100 minus 63 equals 37. 37 pieces of the puzzle are left for Carol to find.