⚽ Soccer, tennis, dance ,cats Grade 5Reading: grades 5-6Fractions of a numberMultiplicationSkip countingRounding
The Case of the Missing Diamond Mic
Just minutes before the ultimate pop-star soccer kick-off concert, the legendary Diamond Microphone vanished from backstage! The Stage Phantom left behind faint paw prints, stray hair strands, and clues hidden across the arena. Tackle the math clues to uncover 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
| Name | Signature Move | Stage Gear | Dominant Hand | Hairstyle | Secret Distraction |
|---|---|---|---|---|---|
| Rafael Nadal | Ace Tennis Serve | Whiskered Helmet | Right Handed | Neon Waves | Laser Pointer Light |
| Mia Hamm | High Kick Leap | Whiskered Helmet | Left Handed | High Bun | Catnip Scent |
| Billie Eilish | Pop Vocal Blast | Purple Ribbon | Left Handed | Neon Waves | Catnip Scent |
| Serena Williams | Cat Reflex Flip | Sequined Jacket | Left Handed | High Bun | Laser Pointer Light |
| Dua Lipa | Cat Reflex Flip | Neon Cleats | Right Handed | High Bun | Catnip Scent |
| Taylor Swift | Ace Tennis Serve | Sparkly Visor | Right Handed | High Bun | Laser Pointer Light |
| Carlos Alcaraz | Ace Tennis Serve | Sparkly Visor | Right Handed | Neon Waves | Laser Pointer Light |
| Misty Copeland | Ace Tennis Serve | Neon Cleats | Right Handed | Braided Ponytail | Pop Song Chorus |
| Sabrina Carpenter | Ace Tennis Serve | Whiskered Helmet | Right Handed | High Bun | Laser Pointer Light |
| Marta Silva | Turbo Soccer Kick | Whiskered Helmet | Right Handed | Braided Ponytail | Pop Song Chorus |
| Naomi Osaka | Cat Reflex Flip | Purple Ribbon | Right Handed | High Bun | Laser Pointer Light |
| Megan Rapinoe | Pop Vocal Blast | Neon Cleats | Left Handed | High Bun | Catnip Scent |
| Roger Federer | Turbo Soccer Kick | Sequined Jacket | Right Handed | High Bun | Pop Song Chorus |
| Coco Gauff | Turbo Soccer Kick | Whiskered Helmet | Right Handed | High Bun | Laser Pointer Light |
| Novak Djokovic | Turbo Soccer Kick | Purple Ribbon | Left Handed | High Bun | Laser Pointer Light |
| Chloe Kim | Pop Vocal Blast | Purple Ribbon | Left Handed | Braided Ponytail | Pop Song Chorus |
| Rose Lavelle | Ace Tennis Serve | Purple Ribbon | Right Handed | Neon Waves | Laser Pointer Light |
| Ariana Grande | Ace Tennis Serve | Purple Ribbon | Right Handed | Braided Ponytail | Pop Song Chorus |
| Stefani Joanne | Pop Vocal Blast | Neon Cleats | Left Handed | Neon Waves | Catnip Scent |
| Lionel Messi | Turbo Soccer Kick | Whiskered Helmet | Left Handed | High Bun | Laser Pointer Light |
| Alex Morgan | Turbo Soccer Kick | Neon Cleats | Right Handed | High Bun | Laser Pointer Light |
Clue 1
Fractions of a number
The venue manager divided tour merchandise into fractional sets to trace the suspect.
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
18
15
12
2
14
2
10
12
23
T
18
6
27
12
2
24
27
T
18
40
12
34
38
24
12
27
24
23
11
12
34
T
18
2
2/5 of 45 =T
4/8 of 54 =O
2/8 of 24 =D
1/5 of 60 =E
2/6 of 114 =R
1/8 of 16 =S
4/6 of 51 =A
2/10 of 50 =P
1/4 of 60 =H
5/10 of 48 =N
3/6 of 22 =L
2/10 of 115 =C
8/10 of 50 =W
4/6 of 21 =U
0/14 letters found
Clue 2
Multiplication facts (1-12)
The dance captain counted total glitter props by multiplying practice rows.
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
1
42
50
30
90
55
55
9
90
132
42
50
55
14
T
1
42
50
84
90
10
33
80
63
42
80
132
50
90
132
33
90
60
42
T
1
42
9
132
14
1 × 1 =T
5 × 10 =E
7 × 2 =D
10 × 9 =I
10 × 1 =C
11 × 12 =N
7 × 12 =M
6 × 5 =V
9 × 7 =P
10 × 8 =O
5 × 12 =G
11 × 5 =L
7 × 6 =H
1 × 9 =A
11 × 3 =R
0/15 letters found
Clue 3
Skip counting
The security guard checked stage lights by skip counting down the catwalk.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
S
21
55
S
21
80
12
14
70
15
10
S
21
50
39
S
21
70
6
10
14
70
12
50
20
110
42
10
S
21
12
6
80
22
39
16
70
12
6
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27S
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10R
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21W
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14A
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130Y
Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18E
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70D
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26O
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65U
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100P
Skip-count by 5s. Fill the blank: 5, 10, 15, ___, 25, 30B
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18C
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48L
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20N
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80T
0/16 letters found
Clue 4
Rounding
The sound desk radar only displays stadium noise levels rounded to the nearest thousand.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
F
700
500
230
200
70
7000
110
7000
3700
2900
20
3700
200
F
700
2900
500
370
7000
110
3700
2000
110
50
230
200
200
4300
7000
2900
70
500
500
2900
Round 674 to the nearest hundredF
Round 24 to the nearest tenP
Round 515 to the nearest hundredO
Round 73 to the nearest tenD
Round 230 to the nearest tenU
Round 3,709 to the nearest hundredI
Round 2,264 to the nearest thousandG
Round 155 to the nearest hundredN
Round 6,789 to the nearest thousandA
Round 49 to the nearest tenB
Round 367 to the nearest tenM
Round 4,280 to the nearest hundredE
Round 107 to the nearest tenH
Round 2,873 to the nearest hundredR
0/14 letters found
Clue 5
Fractions of a number — the last clue
The cat trainer reviewed fractional portions of treats left near security.
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
1/10 of 50 = ?
2/4 of 4 = ?
2/8 of 16 = ?
1/3 of 27 = ?
1/6 of 6 = ?
1/6 of 60 = ?
2/4 of 14 = ?
1/4 of 32 = ?
1/6 of 36 = ?
3/5 of 5 = ?
2/3 of 18 = ?
Step 2 — cross out the sentence with each answer
1.The villain executed a high kick leap, then fastened the whiskered helmet.
2.The villain served an ace tennis ball, then tilted the sparkly visor.
3.The villain executed a high kick leap, then zipped up the sequined jacket.
4.The villain boosted a turbo soccer kick, then fastened the whiskered helmet.
5.The villain flipped with cat reflexes, then adjusted the purple ribbon.
6.The villain served an ace tennis ball, then adjusted the purple ribbon.
7.The villain flipped with cat reflexes, then laced up the neon cleats.
8.The villain executed a high kick leap, then tilted the sparkly visor.
9.The villain boosted a turbo soccer kick, then laced up the neon cleats.
10.The villain blasted a loud pop vocal note, then adjusted the purple ribbon.
11.The villain served an ace tennis ball, then fastened the whiskered helmet.
12.The villain served an ace tennis ball, then laced up the neon cleats.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Diamond Mic
Culprit: Sabrina Carpenter (Ace Tennis Serve · Whiskered Helmet · Right Handed · High Bun · Laser Pointer Light)
- Clue 1 (Fractions of a number): "THE SUSPECT DOES NOT WEAR NEON CLEATS"2/5 of 45 = 18 (T) · 4/8 of 54 = 27 (O) · 2/8 of 24 = 6 (D) · 1/5 of 60 = 12 (E) · 2/6 of 114 = 38 (R) · 1/8 of 16 = 2 (S) · 4/6 of 51 = 34 (A) · 2/10 of 50 = 10 (P) · 1/4 of 60 = 15 (H) · 5/10 of 48 = 24 (N) · 3/6 of 22 = 11 (L) · 2/10 of 115 = 23 (C) · 8/10 of 50 = 40 (W) · 4/6 of 21 = 14 (U)
- Clue 2 (Multiplication facts (1-12)): "THE VILLAIN HELD THE MICROPHONE IN RIGHT HAND"1 × 1 = 1 (T) · 5 × 10 = 50 (E) · 7 × 2 = 14 (D) · 10 × 9 = 90 (I) · 10 × 1 = 10 (C) · 11 × 12 = 132 (N) · 7 × 12 = 84 (M) · 6 × 5 = 30 (V) · 9 × 7 = 63 (P) · 10 × 8 = 80 (O) · 5 × 12 = 60 (G) · 11 × 5 = 55 (L) · 7 × 6 = 42 (H) · 1 × 9 = 9 (A) · 11 × 3 = 33 (R)
- Clue 3 (Skip counting): "SUSPECT WAS DISTRACTED BY LASER POINTER"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (S) · Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (R) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21 = 15 (W) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (A) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (Y) · Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18 = 12 (E) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70 = 50 (D) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (O) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (U) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100 = 80 (P) · Skip-count by 5s. Fill the blank: 5, 10, 15, ___, 25, 30 = 20 (B) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (C) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (L) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (N) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (T)
- Clue 4 (Rounding): "FOUND A HAIRPIN FROM A HIGH BUN NEAR DOOR"Round 674 to the nearest hundred = 700 (F) · Round 24 to the nearest ten = 20 (P) · Round 515 to the nearest hundred = 500 (O) · Round 73 to the nearest ten = 70 (D) · Round 230 to the nearest ten = 230 (U) · Round 3,709 to the nearest hundred = 3700 (I) · Round 2,264 to the nearest thousand = 2000 (G) · Round 155 to the nearest hundred = 200 (N) · Round 6,789 to the nearest thousand = 7000 (A) · Round 49 to the nearest ten = 50 (B) · Round 367 to the nearest ten = 370 (M) · Round 4,280 to the nearest hundred = 4300 (E) · Round 107 to the nearest ten = 110 (H) · Round 2,873 to the nearest hundred = 2900 (R)
- Clue 5 (Fractions of a number): surviving statement (box 11) → Sabrina Carpenter1/10 of 50 = 5 · 2/4 of 4 = 2 · 2/8 of 16 = 4 · 1/3 of 27 = 9 · 1/6 of 6 = 1 · 1/6 of 60 = 10 · 2/4 of 14 = 7 · 1/4 of 32 = 8 · 1/6 of 36 = 6 · 3/5 of 5 = 3 · 2/3 of 18 = 12
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Fractions of a number, Multiplication, Skip counting, Rounding
- Reading level
- grades 5-6
- Theme
- The Case of the Missing Diamond Mic — set in Harmony Arena Stadium
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects