Place Value, Models for Arithmetic 1.1

Question 1

Define whole numbers?

Answer 1

0, 1, 2, 3, 4, 5,…

Question 2

Define cardinal numbers?

Answer 2

Whole numbers used to count objects

Question 3

Define ordinal numbers?

Answer 3

Whole numbers used to put objects in order

Question 4

Define a number?

Answer 4

A number is an abstract idea

Question 5

What two ways are numbers initially taught to children?

Answer 5

Counting chants (includes skip counting) and counting exercises

Question 6

Define set model?

Answer 6

One counts discrete objects. Answer must be a whole number.

Question 7

Define measurement model?

Answer 7

One measures quantity such as distance, time or weight. Answer is often not whole number.

Question 8

How does one count groups of objects?

Answer 8

Using a set model.

Question 9

Define set?

Answer 9

A set is a group of objects.

Question 10

Define a number line?

Answer 10

Simplest version of a measurement model.

Question 11

Define a numeral?

Answer 11

Symbols used to write numbers.

Question 12

Name three systems of numerals?

Answer 12

1. Tallies 2. Egyptian numerals 3. Decimal numerals.

Question 13

How many digits in a decimal system?

Answer 13

Ten digits, 0-9

Question 14

Define place value?

Answer 14

The value of a digit is specified by its position within a number.

Question 15

Name four advantages of a decimal numeral system?

Answer 15

1. Easily records very large numbers 2. Extends to a way of recording numbers to any desired accuracy 3. Easy methods of adding, subtracting, multiplying and dividing 4. Used throughout the world