STAAR Grade 8 Mathematics - Texas Education Agency
STAAR?
State of Texas Assessments of Academic Readiness
GRADE 8
Mathematics
Administered April 2021
RELEASED
Copyright ? 2021, Texas Education Agency. All rights reserved. Reproduction of all or portions of this work is prohibited without express written permission from the Texas Education Agency.
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STAAR GRADE 8 MATHEMATICS REFERENCE MATERIALS
LINEAR EQUATIONS Slope-intercept form Direct variation
Slope of a line CIRCUMFERENCE Circle AREA Triangle
C = 2r
or
Rectangle or parallelogram
Trapezoid
Circle SURFACE AREA
Prism Cylinder VOLUME Prism or cylinder
Lateral S = Ph S = 2rh
Pyramid or cone
Sphere ADDITIONAL INFORMATION Pythagorean theorem
Simple interest
Compound interest
STAAR?
State of Texas
Assessments of
Academic Readiness
y = mx + b
y = kx
m
=
y2 - x2 -
y1 x1
C = d
A = 1 bh 2
A = bh A = 1 (b + b )h
21 2 A = r 2
Total S = Ph + 2B S = 2rh + 2r 2
V = Bh V = 1 Bh
3 V = 4 r 3
3
a2 + b2 = c2 I = Prt A = P (1 + r)t
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