Just Two Pages
Pick two facing pages in any book and add the page numbers. Can your child work out which pages you chose?
You can use this type of problem with any book or thick magazine.
Secretly riffle through the pages of the book and note the pages where you stopped. Without letting your child see the pages, add up the numbers and challenge them to find the same pages.
For example:
The numbers on the two pages add up to 59. What are the pages?
If the numbers on the two pages added up to 135. What are the pages?
How about 267?
What do you notice?
Are the totals always odd? Why? How do you know?
Is there a quick way to work the numbers out?
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