1. ©2009 – Not to be sold/Free to use
Stage 5
Year 9
Rational
Numbers
Index Notation
Division
Press Ctrl-A
©2009 – Not to be sold/Free to use

2. Evaluating Numbers in Index Notation
Division with Indices
using expanded notation.
2x2x2x2x2
= 2x2
= 22
25  23 =
2x2x2
5x5x5x5x5x5x5
5752=
= 5x5x5x5x5
= 55
5x5
3x3x3x3x3x3x3
37  34 =
= 3x3x3
= 33
3x3x3x3 2

3. Evaluating Numbers in Index Notation
Rule: Division with Indices
am  an = am+n
25  22 =
25-2
= 23
57  52 =
57-2
= 55
34  37 =
34-7
= 3-3 3
Contents

4. Evaluating Numbers in Index Notation
Exercises
39 ÷ 37 = 32
56 ÷ 52 = 54
85 ÷ 82 = 83
27 ÷ 2 = 26
109 ÷ 105 = 103
118 ÷ 115 = 113
156 ÷ 155 = 15
206 ÷ 203 = 203