Revision Notes
... In an equation letters stand for missing numbers. To solve an equation is to find the missing value of the letters. To keep balance we will do the same operation to both sides of the equation, the left hand side and the right hand side. To solve the equation 2x + 7 = 19 we need to find an x value wh ...
... In an equation letters stand for missing numbers. To solve an equation is to find the missing value of the letters. To keep balance we will do the same operation to both sides of the equation, the left hand side and the right hand side. To solve the equation 2x + 7 = 19 we need to find an x value wh ...
3 OpsIntegers wLines
... When the addends have the same sign: Add the absolute value of the addends. The sign of the sum will be the common sign of the addends. When the addends have different signs: Take the absolute value of the addends. Take the smaller from the larger absolute value. The sign of the sum will be same as ...
... When the addends have the same sign: Add the absolute value of the addends. The sign of the sum will be the common sign of the addends. When the addends have different signs: Take the absolute value of the addends. Take the smaller from the larger absolute value. The sign of the sum will be same as ...
complex numbers
... To add or subtract complex numbers, add or subtract their real parts and then add or subtract their imaginary parts. Adding complex numbers is easy. To multiply complex numbers, use the rule for multiplying binomials. After you are done, remember that i 2 1 and make the substitution. In fact, if ...
... To add or subtract complex numbers, add or subtract their real parts and then add or subtract their imaginary parts. Adding complex numbers is easy. To multiply complex numbers, use the rule for multiplying binomials. After you are done, remember that i 2 1 and make the substitution. In fact, if ...
Basic Counting Principles
... the 10th card does not match any previous: • 1st pick the 10th card; pick the other 9 from the other 51 cards. ...
... the 10th card does not match any previous: • 1st pick the 10th card; pick the other 9 from the other 51 cards. ...
Problem-solving questions
... such numbers are there? 30. Can you find a rule to describe numbers in the sequence; 101, 104, 109, 116, … Find the next four terms in the sequence 31. Mrs Gallagher bought a new plant for my garden and asked her children to guess the type and colour of the plant. Conor said it was a red rose, Sharo ...
... such numbers are there? 30. Can you find a rule to describe numbers in the sequence; 101, 104, 109, 116, … Find the next four terms in the sequence 31. Mrs Gallagher bought a new plant for my garden and asked her children to guess the type and colour of the plant. Conor said it was a red rose, Sharo ...
11/6/01
... Change in Oxidation Number Method 1. Write as much of unbalanced equation as possible. 2. Assign oxidation numbers & identify species undergoing changes in oxidation numbers. 3. Connect pairs of atoms (with changing oxidation numbers) on opposite sides of equation with brackets (or write a separate ...
... Change in Oxidation Number Method 1. Write as much of unbalanced equation as possible. 2. Assign oxidation numbers & identify species undergoing changes in oxidation numbers. 3. Connect pairs of atoms (with changing oxidation numbers) on opposite sides of equation with brackets (or write a separate ...
P.1 Real Numbers
... 3. The distance between a point on the real number line and the origin is the _______ of the real number. 4. Numbers that can be written as the product of two or more prime numbers are called _______ numbers. 5. Integers that have exactly two positive factors, the integer itself and 1, are called __ ...
... 3. The distance between a point on the real number line and the origin is the _______ of the real number. 4. Numbers that can be written as the product of two or more prime numbers are called _______ numbers. 5. Integers that have exactly two positive factors, the integer itself and 1, are called __ ...
System Engineering
... – If the number is negative, take 2’s complement to determine its magnitude • Or, just add up the values of bits at their positions, remembering that the first bit is implicitly negative. ...
... – If the number is negative, take 2’s complement to determine its magnitude • Or, just add up the values of bits at their positions, remembering that the first bit is implicitly negative. ...
Solutions Manual to SICP, 2nd Edition
... (else 25)) (+ 2 (if (> b a) b a)) (* (cond ((> a b) a) ((< a b) b) (else -1)) (+ a 1)) ...
... (else 25)) (+ 2 (if (> b a) b a)) (* (cond ((> a b) a) ((< a b) b) (else -1)) (+ a 1)) ...
Addition
Addition (often signified by the plus symbol ""+"") is one of the four elementary, mathematical operations of arithmetic, with the others being subtraction, multiplication and division.The addition of two whole numbers is the total amount of those quantities combined. For example, in the picture on the right, there is a combination of three apples and two apples together; making a total of 5 apples. This observation is equivalent to the mathematical expression ""3 + 2 = 5"" i.e., ""3 add 2 is equal to 5"".Besides counting fruits, addition can also represent combining other physical objects. Using systematic generalizations, addition can also be defined on more abstract quantities, such as integers, rational numbers, real numbers and complex numbers and other abstract objects such as vectors and matrices.In arithmetic, rules for addition involving fractions and negative numbers have been devised amongst others. In algebra, addition is studied more abstractly.Addition has several important properties. It is commutative, meaning that order does not matter, and it is associative, meaning that when one adds more than two numbers, the order in which addition is performed does not matter (see Summation). Repeated addition of 1 is the same as counting; addition of 0 does not change a number. Addition also obeys predictable rules concerning related operations such as subtraction and multiplication.Performing addition is one of the simplest numerical tasks. Addition of very small numbers is accessible to toddlers; the most basic task, 1 + 1, can be performed by infants as young as five months and even some non-human animals. In primary education, students are taught to add numbers in the decimal system, starting with single digits and progressively tackling more difficult problems. Mechanical aids range from the ancient abacus to the modern computer, where research on the most efficient implementations of addition continues to this day.