FAST Grade 8 Fractional Reasoning. Practice it free.

Measures rational-number and proportional reasoning, including fraction/decimal operations and applications. This Grade 8 reporting domain maps to 3 practice skills and 8 representative questions from the playable bank.

Grade 83 mapped skills
What the test measures

Fractional Reasoning skills

  1. 8.FR.1.1, 8.FR.1.2, 8.FR.1.3, 8.FR.2.1, 8.FR.2.2, 8.FR.2.3

Standards basis

Florida B.E.S.T. Standards — Florida

How the FAST reports it

Florida’s FAST Mathematics is a state-specific assessment program aligned to the Florida B.E.S.T. Standards rather than a national framework. The published blueprint organizes results by reporting categories derived from B.E.S.T. domains, with separate blueprints for grades 3-8 FAST Mathematics and the B.E.S.T. Algebra 1 and Geometry EOCs.

Blueprint & weighting

Florida publishes blueprint percentage ranges by reporting category. The 2025-26 fact sheet states each PM event is tied to a blueprint for the full grade-level content, and the test design summary gives approximate item ranges per reporting category; the reporting-category statements note that a minimum of 15% of raw score points should come from each reporting category, with some domains combined when needed.

Try it now

8 free questions · 0/0 correct

Practice playmedium

On a map, 1.51.5 inches represents an actual distance of 3636 miles. At this scale, what is the actual distance, in miles, represented by 44 inches on the map?

Scale: 361.5=24\dfrac{36}{1.5} = 24 miles per inch. For 44 inches: 24×4=9624 \times 4 = 96 miles.

Practice playeasy

Solve for xx: 432=6x\dfrac{4}{32} = \dfrac{6}{x}.

Cross-multiply: 4x=326=1924 x = 32 \cdot 6 = 192. So x=48x = 48.

Practice playmedium

6.3×1042.1×109=\dfrac{6.3 \times 10^{-4}}{2.1 \times 10^{-9}}=

Divide coefficients and subtract exponents: 6.3÷2.1=36.3 \div 2.1 = 3 and 4(9)=5-4-(-9)=5. So the quotient is 3×105.3 \times 10^{5}\textsf{.}

Practice playeasy

A passenger train traveled 348348 miles in 44 hours at a constant speed. What was the train's speed, in miles per hour?

Speed = distance ÷\div time: 3484=87\dfrac{348}{4} = 87 miles per hour.

Practice playeasy

xx and yy are in the ratio 88 to 33. Given that y=45y = 45, what is xx?

xy=83\dfrac{x}{y} = \dfrac{8}{3}. With y=45y = 45, x45=83\dfrac{x}{45} = \dfrac{8}{3}, so 3x=3603x = 360 and x=120x = 120.

Practice playmedium

(4×103)(5×104)(4 \times 10^{3})(5 \times 10^{4}) equals

Multiply coefficients and add exponents: 45=204 \cdot 5 = 20 and 3+4=73+4=7, giving 20×10720 \times 10^{7}. Rewrite as 2×101×107=2×108.2 \times 10^{1} \times 10^{7}=2 \times 10^{8}\textsf{.}

Practice playeasy

At an animal shelter, the ratio of cats to dogs is 55 to 88. If there are 3535 cats at the shelter, how many dogs are there?

Scale the ratio: 3535 cats is 77 groups of 55, so dogs = 7×8=567 \times 8 = 56.

Practice playeasy

A car travels 390390 miles in 66 hours. What is the speed in miles per hour?

390÷6=65390 \div 6 = 65 miles per hour.

Keep practicing

Turn fractional reasoning into game time.

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