Lost Bookmark!

This is a multiplication challenge. See if you can help Marta.

Marta was reading a mystery story when the doorbell rang. She couldn't find her bookmark, so left her book open on the coffee table. When she came back, she discovered that her nephew had closed her book!

Her nephew said, "I see you like mysteries, so let's see if you can solve this one. When I closed your book, I noticed that the product of the facing pages was 7140."

Can you help Marta solve her mystery?

To remember what a product is, click here to look it up in the glossary.

You can get help solving this problem. Just click on the option that best describes you:

I don't know how to get started                    I have an idea, but want some extra help                

If you are ready to solve it without help, start explaining your thinking below!

Your Name:
Include your email address if you would like a response to your work:

What pages were open in Marta's book?  Please explain the thinking you used to get your answer.

    
   
Here's who has answered correctly  so far:

Ari R.             Alison F.           Ben C.            Skylar M.

Sarah L.        Jody F.            Brian T.            Andy L.

Daniel P.       Curtis O.        Benjamin G.    Eli F.

Katerina B.    Alex A.         Brett P.               Miles R.

Carolyn P.      Taylor R.       Forrest T.            Sean R.

Andrew W.     Nathan G.     Harry W.         Chase M.

Nicolas S.        Lark T.             Sam S.              Moria S.

James D.         Alexandre A.       Lara M.      Jesse P.

Madison W.     Michael D.          Mary W.        Fiona N.

Chitti R.            Kathryn L.             Sean R.      Emma W.

Karan S.            H                            Anna E.

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 from Let's Talk Math, by Pat Lilburn and Pam Rawson.