When you are doing addition and subtraction, my chemistry text tells me to round to the least number of decimal places. It also tells me when rounding to use the rule that if its 5 or more, to round up.I have a problem that tells me to solve 0.881+132.1-12.02. The full answer I get is 120.961.Since I need at least one decimal place, should I keep it as 120.9 or round up to 121.0?
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
When you are doing addition and subtraction, my chemistry text tells me to round to the least number of decimal places. It also tells me when rounding to use the rule that if its 5 or more, to round up.
I have a problem that tells me to solve 0.881+132.1-12.02. The full answer I get is 120.961.
Since I need at least one decimal place, should I keep it as 120.9 or round up to 121.0?
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