Trip Chips

Solution

They ate 51 bags of chips on their trip.

Explanation

Step 1

Use the clues to find out how many bags of chips the scouts had left. Make a list or fill in a chart to keep track of the information.

Add up the total for each kind of chips to see how many bags were left in all.

Kind of chip How many boxes? How many bags left over? Total
Potato chips 2 3 23
Nacho chips 1 0 10
Barbecue chips 0 6 6
Total 3 9 39

Another way to keep track of the information:

Draw Number
Potato chips
Box of ten bags of potato chips Box of ten bags of potato chips A single bag of potato chips A single bag of potato chips A single bag of potato chips
23
Nacho chips
  Box containing ten bags of nacho chips.
10
Barbecue chips
A bag of barbeque chips.A bag of barbeque chips.A bag of barbeque chips.A bag of barbeque chips.A bag of barbeque chips.A bag of barbeque chips.
6
Add to find how many bags of chips are left over:
23 + 10 + 6 =
39

Step 2

To find out how many they had at first:
Think: They had 9 boxes with 10 bags in each box to start.

That means 90 bags to start.
To find out how many they ate, subtract:
90 − 39 = 51

They ate 51 bags of chips on their trip.



Houghton Mifflin Math Grade 3