Review of Whole Numbers.
Frames 1-1 through 1-36.
After completing this lesson, you should be able to:
1-1. Identify by name each number in given addition, subtraction,
multiplication, and division problems.
1-2. Set up and solve given problems involving addition, subtraction,
1-3. Check given problems involving addition, subtraction, multiplication,
and division of whole numbers.
Work the following exercises (numbered frames) in numerical order. Write
the answer in the space provided in the frame. After you have completed a
frame, check your answer against solution given in the shaded area in the
following frame. The final frame contains review exercises for Lesson 1.
These exercises will help you to achieve the lesson objectives and prepare
for the examination.
The solution to the
PLACE VALUE. Our number system is based upon powers of 10. That
exercise in Frame 1-1 is in
is, the value (amount) of a digit (numeral) depends upon its location in
the shaded area (right side)
the number. Consider a given digit location (its place in the number, not
of Frame 1-2 on the
the value of the numeral itself). The digit location to its immediate left is
worth ten times as much as the given digit location. The digit place to
the immediate right is worth one-tenth as much. This is called place
value. For example, in the number 456, the "5" tells how many tens
(place value is "10"), the "4" tells how many hundreds (place value is
100, which is 10 x 10) and the 6 tells how many ones (place value is 1,
which is 1/10 x 10). This is sometimes called "the base 10 numbering
The number 456 is equal to
4 x 100
plus 5 x 10
plus 6 x
In the number 9724, the digit in the far right tells how many ones (4 x 1).
The second digit tells how many tens (2 x 10). The third digit tells how
many hundreds (7 x 100). The fourth digit tells how many