Chapter 7 Decimals Worksheet - New Century Maths Page 8
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386 Look at the following diagram.
a Find a path from the
circle to the
circle. You can make your first move in
START
TOP
either direction, but then you can only move to a circle with a larger number.
TOP
0.029
0.2
0.12
0.121
0.17
0.09
0.071
0.11
0.14
0.081
0.3
0.05
0.005
0.015
START
b Now write out the number sequence for:
i the longest path
ii a path requiring seven moves
iii the route requiring nine moves
c There are several paths that use the smallest number of moves.
i Find and write the number sequence for all the shortest paths you can find.
ii How many moves are in the shortest path?
Using technology
Ordering decimals
Spreadsheet
A spreadsheet can be used for ordering a group of numbers, from smallest to largest or
7-01
vice versa.
Ordering
Instructions
decimals
Step 1: Type your numbers into the green column, like the green box below.
(You can overtype Spreadsheet 7-01.)
Step 2: Hold down the left mouse key and drag, to highlight the numbers that you typed.
Step 3: Click on the Data menu, and choose ‘Sort’.
Step 4: You must choose this column to sort, but you can decide whether to choose to sort
in ascending order or descending order.
Step 5: When you press ‘OK’, the spreadsheet will automatically order the data for you.
Example:
0.2
0.23
0.232
0.233
0.3
0.32
0.322
205
DECIMALS
CHAPTER 7
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