AK STAR Grades 6-8 Number System. Practice it free.

Measures number-system understanding in middle school, including operations with rational numbers and the real-number system. This Grades 6-8 reporting domain maps to 6 practice skills and 8 representative questions from the playable bank.

Grades 6-8Number System6 mapped skills

What the test measures

Number System skills

6.NS.1–6.NS.8
7.NS.1–7.NS.3
8.NS.1–8.NS.2

Standards basis

Alaska Mathematics Standards — Alaska

How the AK STAR reports it

AK STAR is Alaska’s state summative assessment, built around Alaska’s own mathematics standards rather than a national consortium framework. Its math blueprint is organized into grade-level content strands/instructional areas and an adaptive growth component aligned to MAP Growth instructional areas.

Blueprint & weighting

The blueprint gives target item counts and point ranges by grade and strand, rather than fixed percentage weights. Grades 3-5 and 6-9 each include summative item counts plus additional growth items; grade 9 has no summative Geometry strand, with Geometry reported only through growth items.

Official sources

Alaska Department of Education and Early Development
Alaska Department of Education and Early Development
Alaska Department of Education and Early Development

Practice by skill

Topics mapped to this domain

Absolute value

Grade 660 questions

Decimal operations

Grade 6109 questions

Integer operations

Grade 7121 questions

Irrational number approximations

Grade 840 questions

Multiplying and dividing fractions

Grade 6112 questions

Rational number line locations (ACT)

Grade 610 questions

Try it now

8 free questions · 0/0 correct

Practice playeasy

Compute $|0|$ .

$0$ is its own distance from $0$ , so $|0| = 0$ .

Practice playeasy

What is $5.70 \times 5$ ?

$5.70 \times 5 = 28.5$ .

Practice playeasy

What is $1 + (-7)$ ?

Result: $-6$ .

Practice playeasy

Between which two consecutive integers does $\sqrt{40}$ lie?

$6^{2} = 36$ and $7^{2} = 49\textsf{.}$ Since $36 < 40 < 49\textsf{,}$ $\sqrt{40}$ is between $6$ and $7\textsf{.}$

Practice playeasy

What is $\dfrac{3}{5} \times \dfrac{1}{6}$ ?

Multiply across: $\dfrac{3 \times 1}{5 \times 6} = \dfrac{3}{30} = \dfrac{1}{10}$ .

Practice playeasy

What is the distance on the real number line from $0$ to $-\dfrac{23}{8}$ ?

Distance from zero is absolute value: $\left|-\dfrac{23}{8}\right| = \dfrac{23}{8}$ .

Practice playeasy

What is $|11 - 10|$ ?

First compute the difference: $11 - 10 = 1$ . Then take the absolute value: $|1| = 1$ .

Practice playeasy

What is $7.04 - 1.68$ ?

$7.04 - 1.68 = 5.36$ .

Keep practicing

Turn number system into game time.

The AK STAR placement starts with this test's real coverage map and finds the right difficulty.

Blaster Gate game cover

Blaster GatePlay →

Blitz Tanks game cover

Blitz TanksPlay →

Blossom Leap game cover

Blossom LeapPlay →

Bullseye Blitz game cover

Bullseye BlitzPlay →

Related Common Core standards

6.NS.C.7 6.NS.B.3 7.NS.A.1 8.NS.A.2 6.NS.A.1

The same skills on other tests

Source and test overview

All AK STAR prep Official test source

Reporting categories

More Grades 6-8 domains

Ratio & ProportionMeasures ratio/proportional reasoning in middle school.8 QsPractice →Expressions & EquationsMeasures symbolic reasoning, equations, and algebraic expression work in middle school.8 QsPractice →FunctionsMeasures functional reasoning and graphing relationships in grade 8.8 QsPractice →GeometryMeasures geometric measurement, relationships, similarity, congruence, and right-triangle/trigonometry ideas.8 QsPractice →Statistics & ProbabilityMeasures data analysis, probability, and statistical reasoning.8 QsPractice →