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Unit 3 (Operations (Division (different ways to show division (fractions,…
Unit 3
Operations
Addition
addends
numbers that are added or combined
sum
answer in an addition problem
Subtraction
minuend
number that starts the equation and is taken away from
subtrahend
second number and takes away this many from the first number
difference
answer to a subtraction problem
Multiplication
Multiplicand
a quantity that is to be multiplied by another number
multiplier
number that performs the operation on the multiplicand
product
answer to a multiplication question
multiply by 0 and it becomes 0
If you have 0 groups of something you always have 0
multiply by 1 and the number stays the same
can be shown as
different ways to express multiplication
multiplication is repeated addition
Division
Divisor
a number by which another number is divided
Dividend
A number to be divided by another number
quotient
answer to a division problem
Partitive
number of groups is known and you want to find the number in each group
Quotative
entire amount and number in each group is known but you are looking for number of groups
Divide by 1 and the number stays the same
If you keep same number of objects into one group it stays the same
can't divide by 0 because you can't split up objects into 0 groups
different ways to show division
fractions
division is repeated subtraction
Binary
Need two numbers to operate on
area models
visual representation for multiplication and division
used for fractions
for example you can take 1/4 times 1/2 by cutting it horizontally into four pieces and shading in one and then cutting it in half vertically and shading in one piece. The answer is everything that is shaded in twice and the denominator is the total pieces.
