Last year, the world produced 3.5 billion tons of cement and that amount could increase by a billion tons by the year 2050. Express the amount expected in 2050 in scientific notation.

3.5 x 10^9 + 1 x 10^9 = 4.5 x 10^9

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Thank you Mr. Vincent. Helping my middle schooler, I haven't done some of these problems in years. Extremely helpful.

You're most welcome. Glad I could help.

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