Unit 3 Exam Flashcards
(22 cards)
equal groups
These problems involve sets or groups of objects
(e.g., 3 bags with 5 peaches in each bag). They might be solved
using repeated addition.
rate
Rate problems involve some sort of rate (e.g., miles per
hour, cost per peach). A rate is a comparison of quantities
using two different units. Often rate problems are considered a
type of equal groups problems
multiplicative comparison
This type of problem involves a
comparison where one factor is a multiple of the other (e.g.,
Jon drives 4 times as far as Sally to get to work. If Sally drives 8
miles, how far does Jon drive?)
area
Area problems involve finding the area of rectangular
regions. What distinguishes area problems from other types of
multiplication problems is that the total (product) is literally a
different type of unit from the two factors (e.g., The area of a
rectangle that is 2 feet by 4 feet is 8 square feet).
combinations (also known as coordinate pairs)
Combination problems like how many combos of clothes if 3 shirts and 2 pants.
dividend
first- the number being divided
divisor
second- the number you are dividing with
(either how many groups, or how many in each group)
quotient
answer of a division problem
factor
the numbers being multiplied
product
the answer to a muliplication problem
Associative property of multiplication
when you multiply 3 or more numbers, the way that you group them doesn’t change the product
commutative property of multiplication
the order in which you multiply changes
distributive property
on the board
you can multiply the each part of a sum of difference seperatly by one number then add the results
open array
on board
partial products
on board
algorithm
step by step procedure to complete a problem
US standard multiplication algorithm
on board
Lattice method
on board
partitive division
the divisor represents the number of groups
measurment division
the divisor represents the amount in each group
additive multiplication
on board
multiplicative multiplication
on board
