2003 MATHEMATICS NCSCOS
Grade 4 Indicators
The learner will read, write,
model, and compute with nonnegative rational numbers.
A real number that can be written as
a positive or (negative) whole
number, fraction, or decimal.
Rational Number
Expanded
notation form
Picture Form
300+20+6
Forms of
Numbers
Three hundred twenty-six
Written Form
1,111
326
Standard form
http://www.aaamath.com/plc31d-placevalue-add.html
The position of a single digit in a
whole number or decimal number
containing one or more digits.
ten thousands
hundreds
ones
hundredths
45,305.79
thousands
tens
tenths
Place Value
http://mrsbogucki.com/aemes/resource/apps/placeval/placeval.htm
Symbols used to determine
relationships of equalities.
.5 = .50
? < .5
.30 = .300
equal to
.5 =.05
.3 = .003
? =.1,.2,.3,.4,or .5
less than or
equal to
not equal to
Equal to/not equal to
http://www.studyzone.org/testprep/math4/k/greaterlessthanl.cfm
Equal parts of a whole or group
written with a numerator and a
denominator.
3
-Numerator
7
-Denominator
Fraction
http://math.rice.edu/~lanius/fractions/
Denominator:
number of
parts
3
4
Numerator:
number of
each part
Fractions
7
3
Improper fraction
Whole
number
1
2
2
fraction
mixed number
http://www.visualfractions.com/MixtoFrCircle.html
Fractions that are the same or equal
Equal Portions
1/2
=
3/6
Equivalent Fractions
http://www.learningplanet.com/sam/ff/index.asp
http://www.shodor.org/interactivate/activities/fracsorter/index.ht
ml
A fraction written as a
decimal
Decimal Fraction
http://www.amblesideprimary.com/ambleweb/mentalmaths/frac
to.html
Numbers written in standard form to
show a value less than 1.
.1
one-tenth
.01
one-hundredth
Decimal
http://www.321know.com/cmp42bx2.htm
The middle number in a set of data; must put
numbers in order from least to greatest first.
93, 84, 97, 98, 100, 78, 86, 100, 85, 92
78, 84, 85, 86, 92, 93, 97, 98, 100, 100
78, 84, 85, 86, 92, 93, 97, 98, 100, 100
92 + 93 = 185
185 / 2 = 92.5
92.5
Median
http://regentsprep.org/Regents/math/mean/Pmeasure.htm
The number that occurs most in a set of data.
56, 66, 68, 73, 44, 62, 73, 44, 89, 55, 41, 73
41, 44, 44, 55, 56, 62, 66, 68, 73, 73, 73, 89
41, 44, 44, 55, 56, 62, 66, 68, 73, 73, 73, 89
73
Mode
Subtract the smallest number from the largest
number in a set of data.
89, 73, 84, 91, 87, 77, 94
73, 77, 84, 87, 89, 91, 94
94 – 73 = 21
21
Range
http://www.quizville.com/range.php
The likelihood that an event will happen
What color
did the
spinner
land on?
Was this one of
the favorable
choices?
Were there equal
chances for both
colors?
Probability
http://www.mathgoodies.com/lessons/vol6/intro_probability.html
Resources
• Web resources are listed at the bottom of
each slide.
• Additional resources:
– NCDPI Math Glossary
• http://community.learnnc.org/dpi/math/archives/Glo
ssarySP.pdf
– Houghton Mifflin Math
http://www.eduplace.com/kids/hmm/g_4.html