PR-6102UK Investigating Number Patterns 3
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<strong>Patterns</strong> Within the Addition Table<br />
1 Look at the following table of addition facts.<br />
d Try the same thing with other blocks of four<br />
numbers.<br />
e What do you notice?<br />
2 Use the space below.<br />
a Draw a rectangle around<br />
a block of four numbers;<br />
e.g.<br />
b Add all the numbers in<br />
the box;<br />
e.g. 5 + 6 + 6 + 7 =<br />
c Divide the total by 4;<br />
e.g. ÷ 4 =<br />
a Look for a relationship that will allow you to work out the total of the four<br />
Viewing sample<br />
numbers in the box.<br />
b Explain how your method will allow you to quickly work out the total of the four<br />
numbers mentally.<br />
8 • <strong>Investigating</strong> <strong>Number</strong> patterns • © R.I.C. Publications ® • www.ricpublications.com.au •
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