Over the past week, thousands of middle school students participated in this year’s AMC 8 Competition. Whether you took the AMC 8 at school or online, we hope it went well!
The last day of testing was January 23rd, so now the problems can be discussed! See below for an answer key for the 2023 questions as well as the concepts tested on each problem.
1
D
arithmetic: calculations and order of operations
2
E
geometry: symmetry and spatial reasoning
3
B
arithmetic: conversions and calculations
4
D
patterns and number sense
5
B
arithmetic: ratios
6
C
arithmetic: exponents and multiplication
7
B
algebra: slopes and graphs
8
A
logic and careful thinking
9
B
algebra: intervals and interpreting graphs
10
D
arithmetic: fractions and calculations
11
C
algebra: speeds, unit conversions, and estimations
12
B
geometry: circles, areas, and ratios
13
D
algebra: fractions, ratios, and equations
14
E
arithmetic: coins, sums, and careful thinking
15
B
algebra: motion, rates, and average speed
16
C
algebra and geometry: sequences, patterns, and symmetry
17
A
geometry: 3D geometry, nets, and spatial reasoning
18
D
arithmetic and number theory: products and counting
19
C
geometry: equilateral triangles, areas, and similar triangles
20
D
arithmetic: modes, medians, ranges, and statistics
21
C
counting and probability: counting, sums, and careful thinking
22
D
algebra and number theory: sequences and factoring
23
C
counting and probability: probability and cases
24
A
geometry and algebra: isosceles triangles, areas, and similar triangles
This year’s AMC 8 problems are available on the ZIML site by clicking here (either as a Mock Exam or PDF). While you’re there, check out the Daily Magic Spells and Monthly Contests for extra practice!
The AMC 8 exam is administered by the Mathematical Association of America (MAA). For general information about the AMC 8, click here.
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