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Quizzes > Mathematics

Weakest Link Questions: Rapid-Fire Math Quiz

Quick, free weakest link math quiz to build speed and accuracy. Instant results.

Editorial: Review CompletedCreated By: Jacquelyn TolliverUpdated Aug 28, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art style coral quiz background showing chain links with one weak link math symbols and question mark

This weakest link questions math quiz helps you sharpen speed and accuracy as you tackle rapid-fire problems and spot the skills that need practice, one question at a time. Keep improving with a mental math test, try a basic math quiz, or explore math trick questions.

What is 8 + 15?
24
23
21
22
Adding two integers means combining their values into a single sum. When you add 8 and 15, you count up 15 from 8, reaching 23. This is basic arithmetic addition.
What is 12 × 3?
32
30
42
36
Multiplication is repeated addition: 12 added three times is 12 + 12 + 12 = 36. Thus, 12 × 3 equals 36. This fundamental operation appears in everyday calculations.
What is the value of 2^4?
32
12
8
16
An exponent indicates how many times to multiply the base by itself. Here, 2^4 means 2 × 2 × 2 × 2, which equals 16. Powers of two are foundational in many fields including computing.
What is 25% of 80?
25
10
20
15
Percent means "per hundred," so 25% of 80 is (25/100) × 80 = 0.25 × 80 = 20. This applies the percentage formula.
What is the next prime number after 11?
13
14
12
15
A prime number has exactly two distinct positive divisors: 1 and itself. After 11, the next number to check is 12 (not prime), then 13, which has no divisors other than 1 and 13, making it prime.
What is 9 squared?
81
91
72
99
Squaring a number means multiplying it by itself. So 9 squared is 9 × 9 = 81. Squared values often appear in area calculations.
What is the greatest common divisor of 18 and 24?
3
12
6
4
The greatest common divisor (GCD) is the largest number that divides both integers without remainder. Factors of 18 are 1,2,3,6,9,18; factors of 24 are 1,2,3,4,6,8,12,24. The largest common factor is 6.
What is the decimal representation of 1/2?
0.5
2
0.25
1.5
Dividing 1 by 2 gives 0.5 in decimal form. Fractions and decimals represent the same value in different formats. Converting 1/2 to decimal shows it equals one half.
Solve for x: 2x + 5 = 15.
7
2.5
5
10
Isolate x by subtracting 5 from both sides: 2x = 10, then divide by 2 to get x = 5. This step-by-step algebraic manipulation yields the solution.
What is the area of a rectangle with length 5 and width 7?
40
24
35
12
The area of a rectangle is length × width. Multiplying 5 by 7 gives 35 square units. This formula applies to all rectangles.
What is the slope of the line passing through the points (1, 2) and (3, 6)?
2
1
0.5
4
Slope is (change in y) ÷ (change in x) = (6?2)/(3?1) = 4/2 = 2. The slope indicates the line rises 2 units vertically for each 1 unit horizontally.
Calculate 3! + 4!.
24
27
30
32
Factorials multiply all positive integers up to that number. 3! = 6, 4! = 24, so their sum is 6 + 24 = 30. Factorials grow rapidly in combinatorics.
Simplify the expression: (x^2 y^3) × (x^3 y^2).
x^5 y^5
x^5 y^6
x^6 y^5
x^6 y^6
When multiplying like bases, add exponents: x^2 × x^3 = x^(2+3) = x^5 and y^3 × y^2 = y^(3+2) = y^5. This yields x^5 y^5.
How many combinations are there when choosing 2 items from 7 (7 choose 2)?
21
14
42
35
The combination formula is C(n,k)=n!/(k!(n?k)!). Here C(7,2)=7!/(2!5!) = (7×6)/(2×1) = 21. Combinations count selections where order doesn’t matter.
What is the square root of 144?
14
16
12
10
The square root of a number y is a value x such that x^2 = y. Since 12^2 = 144, the principal square root of 144 is 12.
What is the median of the set {3, 7, 5, 9, 11}?
5
7
8
9
First sort the numbers: {3,5,7,9,11}. The median is the middle value in an ordered list of odd length, which is 7. Median measures central tendency.
Solve the quadratic equation x^2 - 5x + 6 = 0.
-2 and -3
1 and 6
2 and 3
-1 and -6
Factoring gives x^2 -5x +6 = (x?2)(x?3)=0, so x=2 or x=3. Quadratic equations often factor into binomials when roots are integers.
What is the sum of the integers from 1 to 100?
5000
5050
5055
4950
Use the formula for arithmetic series: n(n+1)/2. For n=100 this is 100×101/2 = 5050. This neat trick was popularized by Gauss.
Solve for x in the equation 2^x = 16.
8
4
2
16
Since 16 = 2^4, equate exponents: x = 4. Recognizing powers of two simplifies exponential equations.
What is the circumference of a circle with radius 7? (Use ? ? 3.14)
44.00
28.00
43.96
21.98
Circumference = 2?r. Plugging in r=7 and ??3.14 gives 2×3.14×7 = 43.96. This measures the distance around the circle.
In a triangle, two angles measure 30° and 60°. What is the measure of the third angle?
30°
60°
90°
120°
The angles of a triangle sum to 180°. Subtracting 30° and 60° leaves 180°?90°=90°. Thus the third angle is a right angle.
Evaluate the expression (3 + ?5)(3 - ?5).
4
14
9
-2
Use the difference of squares: (a+b)(a?b)=a^2?b^2. Here 3^2?(?5)^2 = 9?5 = 4. This identity simplifies many radical expressions.
What is log base 10 of 1000?
2
3
10
1
Logarithms answer the power to which the base must be raised. Since 10^3=1000, log10(1000)=3. Logarithms are inverse operations to exponents.
Solve the system of equations: x + y = 10 and x - y = 4.
x = 4, y = 6
x = 5, y = 5
x = 7, y = 3
x = 6, y = 4
Add equations to eliminate y: (x+y)+(x?y)=10+4 ? 2x=14 ? x=7. Substitute back: 7+y=10 ? y=3. Systematic elimination yields the solution.
A quadratic function f(x)=x^2+bx+c has its vertex at (1,2) and passes through (0,0). What are b and c?
b = 0, c = -2
b = -2, c = 2
b = -2, c = 0
b = 2, c = 0
Vertex form gives h = –b/(2a). Here a=1, h=1 so –b/2=1 ? b=–2. Passing (0,0) yields 0^2–2·0+c=0 ? c=0. This matches both conditions.
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Study Outcomes

  1. Understand Weakest Link Format -

    Learn the unique structure and pacing of weakest link questions to quickly recognize patterns and anticipate what's coming next.

  2. Apply Mental Math Strategies -

    Use proven calculation shortcuts and approximation methods to tackle rapid-fire questions from the weakest link with confidence and speed.

  3. Enhance Speed and Accuracy -

    Develop techniques to improve both response time and precision when facing our weakest link math quiz under time constraints.

  4. Analyze Common Question Types -

    Break down the most frequent problem formats in the weakest link questions to better prepare for varying difficulty levels.

  5. Employ Effective Time Management -

    Master strategies for dividing your attention across questions and ensuring you maximize correct answers before the clock runs out.

  6. Evaluate and Improve Performance -

    Review your quiz results to identify weak spots and apply targeted practice that helps you conquer future weakest link challenges.

Cheat Sheet

  1. Mental Arithmetic Mastery -

    Develop quick addition and subtraction skills to tackle questions from the weakest link with confidence. Practice daily with 2-digit and 3-digit sums, following Harvard University's math readiness guidelines, to sharpen recall. Use chunking methods (e.g., splitting 47+38 into 40+30 and 7+8) for speed.

  2. Multiplication Table Fluency -

    Memorize multiplication tables from 1 to 12 to breeze through the weakest link math quiz rounds. Refer to the National Council of Teachers of Mathematics (NCTM) recommendations to structure timed drills and flashcards. Mnemonics like "5s end in 5 or 0" and "9s finger trick" help anchor patterns rapidly.

  3. Order of Operations Precision -

    Master PEMDAS/BODMAS rules to solve layered expressions accurately under time pressure. As outlined by UC Berkeley's math department, practice nested examples like 5 × (3 + 2)^2 ÷ 5 to reinforce hierarchy. Regular drills on mixed operations prevent costly mistakes in rapid-fire weakest link questions.

  4. Fraction & Decimal Agility -

    Convert between fractions, decimals, and percentages swiftly, following MIT OpenCourseWare exercises. Remember key equivalents (e.g., 1/4 = 0.25, 3/5 = 0.6) to avoid hesitation during the quiz. Use benchmark fractions for on-the-fly checks and error spotting.

  5. Rapid Estimation & Time Management -

    Employ rounding and front-end estimation techniques to gauge answers quickly, as recommended by the ACT College Board. Set strict time caps (e.g., 10 seconds per question) to mimic the weakest link format's pace. Practice with online timers and quiz apps to build both speed and accuracy.

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