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Module 1, Eureka Math, 4th Grade, Weatherford
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Terms in this set (24)
equation
a statement that two expressions are equal
place value
the numerical value that a digit has by virtue of its position in a number
unit form
the way of saying a number by its place value
unbundling, breaking, renaming, exchanging, regrouping, trading
exchanging a larger unit for an equal amount of smaller units. (e.g., 1 ten for 10 ones) 576 = 5 hundreds 7 tens 6 ones 1 1
bundling, making, renaming, exchanging, regrouping, trading
exchanging smaller units for an equal amount of a larger unit. (e.g., 10 ones for 1 ten)
standard form
the way of writing a number using digits (for example: 156)
expression
a number, or any combination of sums, differences, products or divisions of numbers that evaluates to a number
number sentence
an equation or inequality for which both expressions are numerical and can be evaluated to a single number
digit
any of the numbers 0 to 9
expanded form
the representation of a number as a sum that shows the value of each digit (100+30+5 = 135)
word form
the form of a number that uses written words
equal to
having the same value as one hundred thirty-five = 135 or 160 = 160
less than
an inequality showing the number on the left as less than the number on the right (70 < 85)
greater than
an inequality relationship showing the number on the left as greater than the number on the right (165 > 160)
halfway
with reference to a number line, the midpoint between two numbers
endpoint
used with rounding on the number line; the numbers that mark the beginning and end of a given interval
number line
a line marked with numbers at evenly spaced intervals rounding approximating the value of a given number
estimate
an approximation of a quantity or number
addend
a number that is added to another
algorithm
a step-by-step procedure to solve a particular type of problem
compose
a number is made up of putting together other existing numbers 2,000 + 600 + 70 + 5 = 2,675
decompose
to break apart a number difference answer to a subtraction problem 5,413 = 5,000 + 400 + 10 + 3 or 7 - 4 = 3
sum
answer to an addition problem tape diagram bar diagram 3 + 4 = 7
variables
letters that stand for numbers and can be added, subtracted, multiplied, and divided as numbers 55 - c = 50 3x + 3 = 18 7 + p = 14
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