Bake Sale
Solution
They had 5 cookies left.
Explanation
One Way to Solve
Tammy sold 32 cookies.
Nick sold 5 more than Tammy.
32 + 5 = 37
Cara sold 10 fewer than Tammy.
32 − 10 = 22
Add the number of cookies each person sold to find out how many they sold altogether.
| 32 |  |
the number of cookies Tammy sold |
| 37 | |
the number of cookies Nick sold |
| + 22 | |
the number of cookies Cara sold |
| 91 | |
the total number of cookies sold |
Subtract.
| 96 | |
the number of cookies they had to sell |
| − 91 | |
the number of cookies they sold |
| 5 | |
the number of cookies they had left |
If you use the hundred chart, assign each person a different color.
Tammy — red
Nick — green
Cara — yellow
See the chart below.
Another Way to Solve
Subtract or use the hundred chart to help you.
| 96 | |
the number they had to sell |
| − 32 | |
the number of cookies Tammy sold |
| 64 | |
the number of cookies left after Tammy sold her cookies |
Nick sold 5 more than Tammy.
32 + 5 = 37
| 64 | |
the number of cookies left after Tammy sold her cookies |
| − 37 | |
the number of cookies that Nick sold |
| 27 | |
the number of cookies left after Nick sold his cookies |
Cara sold 10 fewer than Tammy.
32 − 10 = 22
| 27 | |
the number of cookies left after Nick sold his cookies |
| − 22 | |
the number of cookies that Cara sold |
| 5 | |
the number of cookies left at the end of the bake sale |