Pre-Algebra Demystified

Division can be checked by multiplying the quotient by the divisor and seeing
if you get the dividend. For the previous example, multiply 5443.

54

 43

162

216

2322

PRACTICE
Divide:

1. 2666 62


2. 31,568 4


3. 181,044 564


4. 873 24


5. 4,762 371

ANSWERS

1. 43


2. 7,892


3. 321


4. 36 R9


5. 12 R310

Word Problems

In order to solve word problems follow these steps:

1. Read the problem carefully.


2. Identify what you are being asked to find.


3. Perform the correct operation or operations.


4. Check your answer or at least see if it is reasonable.
   In order to know what operation to perform, it is necessary to understand
   the basic concept of each operation.

ADDITION

When you are asked to find the ‘‘sum’’ or the ‘‘total’’ or ‘‘how many in all,’’
and the items are the same in the problem, you add.

CHAPTER 1 Whole Numbers 11