Big Ideas Math: Modeling Real Life, Grade 8
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5. Estimating Quantities
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Exercise 11 Page 347

Round the given decimal number to the nearest 100 000 000 000.

4* 10^(11)

Practice makes perfect
We want to round the given decimal number and write the result as the product of a single digit and a power of 10. 414 148 636 008 Let's start by rounding the given number to the nearest 100 000 000 000. Since the digit in the ten billions place is less than 5, we will not modify the digit in the ${\color{#A800DD}{\text{hundred-}}} {\color{#A800DD}{\text{billions}}} {\color{#A800DD}{\text{place}}}.'"`UNIQ--MLMath-4-QINU`"' Finally, we will write the above number as the product of a single digit and a power of10.To do so, let's first factor out4.$
400 000 000 000
4* 100 000 000 000
4* 10^(11)