What numbers could you round to 400,000 if you rounded them to the nearest hundred thousand

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

The table above shows approximate conversions from gallons to liters. what is the value of x?

What are “like terms”? why can we only add like terms?