Number & Operations for Teachers 

Copyright David & Cynthia Thomas, 2009

Exercises

1. Fill in the following table as indicated:

Base Ten Number	Base Ten Model	Base Two Number	Base Two Model
9
13
		101two
		1011two

2. Complete the following table of equivalent whole numbers

Base Ten	Base Five	Base Two	Base Ten	Base Five	Base Two
1			11
2			12
3			13
4			14
5			15
6			16
7			17
8			18
9			19
10			20

3. Write the largest five digit number in base

· Ten

· Five

· Two

4. In which base are the following numbers written, given that they are equivalent to the indicated base ten numbers

· 111_{base x} = 57

· 201 _{base x} = 19

5. Name the following numbers:

· 134_five

· 40_five

· 134_five

· 1003_five

· 21010_five