Math Crackers
⚽ SoccerGrade 7Reading: grades 7-9IntegersPercentagesOrder of operationsExponentsTwo-step equations

The Case of the Missing Golden Cup

Just hours before the Starlight Cup final, someone broke into the trophy vault and swapped the championship trophy with a deflated practice ball! Track down the clues across the stadium to unmask the culprit.

Suspects

Possible suspects

Cross off a row as each clue rules it out. On screen, tap a row.

21 of 21 still in play
NameSignature MoveFavorite GearDominant FootHairstyleDistraction
Virgil Van DijkPower HeaderGrip GlovesLeft FootedBraided TopLoud Whistle
Declan RiceKnuckleballTinted VisorLeft FootedBraided TopLoud Whistle
Erling HaalandKnuckleballTinted VisorLeft FootedBraided TopBright Floodlight
Antoine GriezmannKnuckleballTaping StrapsRight FootedBraided TopLoud Whistle
Bukayo SakaPower HeaderNeon HeadbandRight FootedBuzz CutBright Floodlight
Kylian MbappeBicycle ShotTaping StrapsLeft FootedBraided TopLoud Whistle
Alex MorganBicycle ShotTinted VisorLeft FootedSpiky CutBright Floodlight
Lautaro MartinezCurve KickPadded SleevesLeft FootedBraided TopLoud Whistle
Rodri HernandezRocket StrikePadded SleevesRight FootedSpiky CutBright Floodlight
Alphonso DaviesPower HeaderTinted VisorLeft FootedSpiky CutLoud Whistle
Sam KerrBicycle ShotNeon HeadbandRight FootedBuzz CutSqueaky Pitch
Cole PalmerBicycle ShotPadded SleevesLeft FootedBraided TopLoud Whistle
Trent Alexander ArnoldBicycle ShotGrip GlovesRight FootedBraided TopLoud Whistle
Jamal MusialaBicycle ShotGrip GlovesRight FootedSpiky CutSqueaky Pitch
Jude BellinghamKnuckleballPadded SleevesRight FootedBraided TopSqueaky Pitch
Khvicha KvaratskheliaKnuckleballTinted VisorLeft FootedBuzz CutLoud Whistle
Federico ValverdeKnuckleballPadded SleevesRight FootedBuzz CutLoud Whistle
Son Heung MinKnuckleballTinted VisorLeft FootedSpiky CutSqueaky Pitch
Phil FodenBicycle ShotTaping StrapsLeft FootedBuzz CutBright Floodlight
Victor OsimhenKnuckleballTaping StrapsLeft FootedBraided TopLoud Whistle
Kevin De BruyneBicycle ShotTinted VisorLeft FootedBraided TopSqueaky Pitch
Clue 1

Integers

Analyzing the net gain and loss of turf yards on the practice field reveals an integer pattern leading to our first clue.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

V
1
12
24
24
22
12
10
21
20
16
7
10
20
23
14
16
22
8
17
22
21
21
16
21
7
24
16
16
V
1
16
7
(-1) + 2 =V
(-4) + 24 =O
(-2) + 24 =A
(-4) + 28 =L
(-6) + 18 =I
(-3) + 20 =P
(-7) + 14 =S
(-11) + 21 =N
13 - (-8) =D
(-10) + 33 =T
(-8) + 16 =R
(-5) + 19 =W
(-13) + 29 =E
0/13 letters found
Clue 2

Percentages

Calculating the possession percentages from the stadium tracking system narrows down the suspicious activity.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

W
19
14
43
17
56
25
25
25
29
W
19
29
48
56
26
43
26
4
4
43
56
5
50
48
29
16
56
11
48
56
29
33
56
25
59
56
17
56
10% of 190 =W
50% of 22 =R
10% of 160 =Y
25% of 16 =O
50% of 96 =L
20% of 295 =C
10% of 140 =I
40% of 140 =E
5% of 580 =A
25% of 104 =F
50% of 100 =P
5% of 500 =S
25% of 20 =D
75% of 44 =V
5% of 860 =T
5% of 340 =N
0/16 letters found
Clue 3

Order of operations

Evaluating the complex tournament scoring equation using proper order of operations unlocks the encrypted locker camera footage.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

T
64
89
32
81
95
42
119
30
29
T
64
52
42
29
54
81
89
32
35
120
T
64
120
42
73
95
35
38
89
29
51
T
64
42
32
52 + 4 × 3 =T
10 × 6 - 30 =R
10 × 7 - 19 =S
12 × 12 - 25 =P
9 × 11 - 10 =H
14 + 2 × 9 =E
9 × 5 - 3 =L
5 × 6 - 1 =I
24 + 7 × 2 =W
6 × 11 - 14 =F
52 + 7 × 3 =O
7 × 8 - 2 =N
92 + 7 × 4 =A
7 × 12 - 3 =C
10 × 11 - 15 =U
8 + 3 × 9 =D
0/16 letters found
Clue 4

Exponents

Computing the exponential increase in spectator ticket sales pinpointed the precise moment the security system was bypassed.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

B
64
225
144
343
8
36
8
9
144
343
225
243
4
144
216
216
36
8
324
4
128
9
36
128
225
324
32
9
25
16
144
243
36
2^6 =B
2^2 =N
7^3 =I
2^7 =T
15^2 =R
2^4 =C
3^2 =H
2^3 =D
6^3 =G
12^2 =A
6^2 =E
2^5 =P
18^2 =O
5^2 =Y
3^5 =S
0/15 letters found
Clue 5

Two-step equations — the last clue

Solving a two step algebra equation based on drill times reveals the final hidden clue.

First solve each problem. Then find each answer in the list below and cross that sentence out. One sentence will be left — that's exactly what the villain did!

Step 1 — solve these
6x + 8 = 38, x = ?
3x + 4 = 34, x = ?
3x + 1 = 37, x = ?
6x + 8 = 26, x = ?
4x + 5 = 41, x = ?
2x + 10 = 24, x = ?
2x + 11 = 23, x = ?
3x + 5 = 29, x = ?
4x + 11 = 19, x = ?
2x + 3 = 25, x = ?
4x + 11 = 15, x = ?
Step 2 — cross out the sentence with each answer
1.The villain swerved a knuckleball through the laser grid, then adjusted a neon headband during the escape.
2.The villain leapt high for a power header to smash the latch, then wrapped taping straps before running away.
3.The villain executed a bicycle shot to reach the shelf, then tightened grip gloves while grabbing the prize.
4.The villain swerved a knuckleball through the laser grid, then wrapped taping straps before running away.
5.The villain swerved a knuckleball through the laser grid, then adjusted a tinted visor in the dark tunnel.
6.The villain executed a bicycle shot to reach the shelf, then adjusted a neon headband during the escape.
7.The villain fired a rocket strike at the lock, then adjusted a neon headband during the escape.
8.The villain leapt high for a power header to smash the latch, then pulled up padded sleeves in the hallway.
9.The villain executed a bicycle shot to reach the shelf, then pulled up padded sleeves in the hallway.
10.The villain leapt high for a power header to smash the latch, then tightened grip gloves while grabbing the prize.
11.The villain fired a rocket strike at the lock, then adjusted a tinted visor in the dark tunnel.
12.The villain executed a bicycle shot to reach the shelf, then wrapped taping straps before running away.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 7 math
Math topics
Integers, Percentages, Order of operations, Exponents, Two-step equations
Reading level
grades 7-9
Theme
The Case of the Missing Golden Cup — set in Starlight Arena Grand Tournament
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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