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Q: A: ### Quick Answer

Milligrams and gallons measure two different things and cannot be equated. However, if the substance in question is water, then 1 gallon of water is equal to 3785.411784 milligrams of water in most cases.

Know MoreA milligram is a unit used to measure mass, and a gallon is used to measure volume. For water, 1 milligram takes up exactly 1 cubic centimeter. According to UnitConversion.org, 1 gallon is equal to 3785.411784 cubic centimeters. Not all substances have this convenient conversion, however. Other substances have different densities. Density is a ratio of units mass per unit volume. Density can be affected by air pressure, so depending on the altitude at which the measurement is taken, the previously stated conversion of water may not be accurate.

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Full Answer >**If the room is rectangular, you measure two connecting sides in feet and multiply those numbers together to figure out the size of the room in square feet.**The area of a rectangle is length times width.Filed Under: - Q:
## What does writing a number in standard form mean in fourth grade math?

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Full Answer >**Standard form in elementary-level mathematics is the number written in standard numerical form, such as 5,395.**According to StudyZone.org from the Oswego City School District, elementary mathematics usually lists around three ways to write numbers: standard, expanded and word name.Filed Under: - Q:
## What is the square root of 40?

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Full Answer >**The square root of 40 is 6.3245553.**The square root of 40 is also written as 2√10. Numbers that are perfect squares have a whole number as their square roots.Filed Under: - Q:
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Full Answer >**A "basic fact" in math is defined as any mathematical number, fact or idea instantly recalled without resorting to strategies, according to NZCER.org.**The main basic facts encountered in math are "whole-number" basic facts, in particular multiplication, addition, division and subtraction.Filed Under: