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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MATHEMATICS

Mathematics

Page 7

DIRECTIONS Read each question carefully. For a multiple-choice question, determine the best answer to the question from the four answer choices provided. For a griddable question, determine the best answer to the question. Then fill in the answer on your answer document.

1 Trapezoid WKRP was translated 4 units to the left and 5 units up on a coordinate grid to create trapezoid WK RP. Which rule describes this transformation? A (x, y) (x - 4, y + 5) B (x, y) (x + 4, y - 5) C (x, y) (x + 4, y + 5) D (x, y) (x - 4, y - 5)

Mathematics

Page 8

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