Lesson 1 #5

First you need to determine what operation needs to be performed based on the context of the problem.  The list below describes a lot (but not all) of the types of problems you'll see

1.  Combining 2 or more quantities?          Addition

2.  Adding on a quantity to some amount you already have?          Addition

3.  Finding the difference between two quantities?          Subtraction

4.  Taking one quantity away from another?          Subtraction

5.  Making some quantity of copies of another quantity?     Multiplication

6.  Repeatedly adding a number to itself some amount of times?         Multiplication

7.  Breaking a quantity into equally sized groups?         Division

8.  Repeatedly subtracting an equal quantity until you reach zero?       Division

Once you determine the operation(s), you need to perform the computations. This problem is like 1 listed above. For this addition problem, one way we can compute is by adding vertically as shown below.

So Vincent earned a total of $1171.