Quick Reference

kelvin

Celsius

Fahrenheit

- 459.67 oF

Absolute zero

0

- 273.15

Water freezes

273.15

0

32

Water boils

373.15

100

212

Addition of Two Positive Numbers

Add their absolute values and place a positive symbol (or no symbol) in font of

the sum.

Addition of Two Negative Numbers

Add their absolute values and place a negative symbol in font of the sum.

Addition of a Positive Number and a Negative Number

Subtract the smaller absolute value from the larger absolute value , then place the

original sign of the larger absolute value in front of the difference.

Subtraction

Change the sign of the subtrahend (second or bottom number), then add the two

numbers according to the rules for addition given above.

Multiplication/Division of Two Numbers

Multiply/divide the absolute values as you would normally. If both original

numbers have the same sign (both positive or both negative), make the

product/quotient positive. If the original numbers had different signs (one positive

and one negative), make the product/quotient negative.

Multiplication of More Than Two Numbers

Multiply the absolute values as you would normally. Count the number of original

numbers that were negative. If that number is even (0, 2, 4, 6, etc.), make the

product positive. If that number is odd (1, 3, 5, 7, etc.), make the product

negative.

MD0900

A-4

Integrated Publishing, Inc. |