# Humans

Humans exploring space have left behind bags of trash, bolts, gloves, and pieces of satellites. Let's say there are currently about 5,000,000 pounds of litter in orbit around Earth. Jenny says that this amount using number names is five billion. Is Jenny correct or incorrect? Explain your thinking.

**Result**### You need to know the following knowledge to solve this word math problem:

### Units of physical quantities:

### Grade of the word problem:

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