Sam needs to cut a piece of sheet metal into 8 pieces. It takes him 5 minutes to make each cut.
How would making a table help you to find the number of minutes it took Sam to cut the sheet metal into 8 pieces.
I need help for 2 and 3.
-- Cut the sheet in half.
-- Put one half-sheet on top of the other half-sheet.
Cut the stack of 2 halves in half.
-- Put one stack of two quarter-sheets on top of the other stack of quarter-sheets.
Cut the stack of 4 quarters in half.
Now you have eight one-eighth sheets.
Three cuts.
Taking Sam (3 x 5) = 15 minutes, plus a few seconds for set-up between cuts.