i-Ready unit 1

number line

A line with values evenly marked, spaced out along the line

place value

The value of a digit based on the place (ones, tens, hundreds) in the number

fact family

a group of related facts

row

a horizontal line of numbers

digit

a symbol that represents a number

column

a vertical line of objects

odd

a whole number that cannot be put into equal groups

each, multiplication

equal groups or sets

equal

having the same amount

difference

how far apart two numbers are

total

in addition

even

number that can always be put in equal groups with no leftovers

regroup

to break up or put together ones, tens and hundreds

compare

to decide if numbers are greater than, less than or equal to one another

round

to find a number that is close in value by finding the nearest ten or hundred

estimate

to make a close guess