🔎 Blooket, YouTube, history, gGrade 5Reading: grades 5-6Fractions of a numberMulti-step word problemsOrder of operationsMultiplication
The Cosmic Stream Sabotage
A rogue streamer has hijacked the ultimate trivia stream at the Cosmos Academy Network! They locked the Master Broadcaster out of the control room and are deleting historical star maps and geography logs. We need to crack the math codes, track down this internet bandit, and save the channel's archives!
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 | Trivia Ability | In-Game Buff | Device Stylus | Hair Evidence | Fending Tool |
|---|---|---|---|---|---|
| Ptolemy | History Hack | Anchor Drop | Red Stylus | Nebula Purple Strands | Gravity Trap |
| Shackleton | Supernova Strike | Anchor Drop | Red Stylus | Solar Orange Strands | Stardust Flash |
| Boudica | Blook Storm | Chronos Glitch | Blue Stylus | Cosmic Blue Strands | Stardust Flash |
| Lovelace | Blook Storm | Chronos Glitch | Blue Stylus | Solar Orange Strands | Stardust Flash |
| Earhart | Blook Storm | Anchor Drop | Blue Stylus | Solar Orange Strands | Stardust Flash |
| Magellan | History Hack | Nebula Boost | Blue Stylus | Cosmic Blue Strands | Gravity Trap |
| Hubble | Telescope Zoom | Anchor Drop | Blue Stylus | Solar Orange Strands | Stardust Flash |
| Copernicus | Supernova Strike | Nebula Boost | Blue Stylus | Solar Orange Strands | Trivia Shield |
| Kepler | Blook Storm | Orbit Shield | Blue Stylus | Nebula Purple Strands | Gravity Trap |
| Sagan | History Hack | Chronos Glitch | Red Stylus | Solar Orange Strands | Stardust Flash |
| Vespucci | Map Warp | Pixel Cloak | Red Stylus | Cosmic Blue Strands | Stardust Flash |
| Darwin | Blook Storm | Chronos Glitch | Red Stylus | Nebula Purple Strands | Gravity Trap |
| Herschel | Telescope Zoom | Anchor Drop | Blue Stylus | Solar Orange Strands | Trivia Shield |
| Aldrin | Map Warp | Nebula Boost | Blue Stylus | Solar Orange Strands | Trivia Shield |
| Newton | Map Warp | Nebula Boost | Blue Stylus | Solar Orange Strands | Stardust Flash |
| Galileo | Map Warp | Pixel Cloak | Blue Stylus | Solar Orange Strands | Stardust Flash |
| Sacagawea | Telescope Zoom | Chronos Glitch | Red Stylus | Solar Orange Strands | Trivia Shield |
| Zheng He | Supernova Strike | Anchor Drop | Blue Stylus | Nebula Purple Strands | Gravity Trap |
| Cleopatra | History Hack | Nebula Boost | Blue Stylus | Cosmic Blue Strands | Trivia Shield |
| Hawking | Blook Storm | Chronos Glitch | Red Stylus | Nebula Purple Strands | Trivia Shield |
| Marco Polo | Telescope Zoom | Nebula Boost | Blue Stylus | Cosmic Blue Strands | Stardust Flash |
Clue 1
Fractions of a number
We checked the main studio server logs. To decode the first clue, we have to calculate the total bandwidth used across three different live streams plus the bonus points gained from a geography quiz.
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
29
36
26
4
39
33
33
25
39
7
18
16
26
17
7
16
T
29
36
25
4
26
T
29
36
26
10
39
37
26
33
23
33
16
25
32
3/6 of 58 =T
2/10 of 130 =E
2/6 of 21 =N
2/8 of 148 =X
1/4 of 40 =P
4/8 of 32 =O
2/10 of 115 =C
1/3 of 96 =K
8/10 of 5 =V
3/6 of 66 =L
2/5 of 45 =D
3/4 of 48 =H
2/8 of 68 =S
1/6 of 150 =A
4/8 of 78 =I
0/15 letters found
Clue 2
Multi-step word problems
The suspect ran past the solar system display and knocked down some model planets. Only a small fraction of the planets survived the fall, but that fraction holds the key to the next lead.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas.
B
74
86
32
52
76
8
58
86
32
76
The Lead Investigator collected 145 trivia tokens in the morning and 3 trivia tokens in the afternoon, then split them equally among 2 The Astronomy Club. How many trivia tokens did each get?B
The Lead Investigator earned 5 model rockets in each of 6 rounds, plus 59 bonus model rockets. Then 13 model rockets were lost. How many model rockets are left?S
The Lead Investigator filled 5 boxes with 7 model rockets each, then found 23 more model rockets. How many model rockets are there in all?Y
The Lead Investigator earned 5 globes in each of 2 rounds, plus 23 bonus globes. Then 1 globes were lost. How many globes are left?U
There were 236 globes in all. 28 globes were set aside. The rest were shared equally among 4 The Astronomy Club. How many globes did each get?E
The Lead Investigator earned 2 globes in each of 5 rounds, plus 81 bonus globes. Then 5 globes were lost. How many globes are left?L
There were 73 trivia tokens in all. 9 trivia tokens were set aside. The rest were shared equally among 8 The Astronomy Club. How many trivia tokens did each get?T
0/7 letters found
Clue 3
Order of operations
To bypass the locked Blooket database, we must solve a security code. The system requires us to follow strict rules, multiplying before adding, to unlock the hair sample file.
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
25
19
6
16
26
57
37
13
30
19
6
63
46
T
25
46
56
T
25
46
64
63
36
56
T
25
26
57
46
56
19
9 × 4 - 11 =T
6 × 8 - 12 =U
6 × 12 - 15 =L
58 + 2 × 3 =R
14 + 6 × 7 =S
13 + 2 × 3 =H
6 × 4 - 8 =Y
20 + 3 × 2 =F
12 + 3 × 6 =C
11 × 6 - 3 =D
1 + 9 × 4 =I
2 + 2 × 2 =E
6 × 11 - 20 =A
7 + 2 × 3 =N
0/14 letters found
Clue 4
Multiplication facts (1-12)
We found rows of storage lockers holding old maps and star charts. Counting the total number of items grid-by-grid reveals the suspect's main weakness.
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
54
1
44
42
27
49
20
108
42
48
60
4
42
4
60
49
35
1
108
16
4
60
49
20
108
9 × 6 =W
11 × 4 =F
3 × 9 =U
8 × 2 =T
9 × 12 =S
4 × 5 =D
7 × 6 =O
4 × 12 =L
1 × 1 =E
7 × 5 =G
6 × 10 =A
7 × 7 =N
1 × 4 =R
0/13 letters found
Clue 5
Fractions of a number — the last clue
The stream chat contains thousands of coordinates. Only a fraction of these coordinates are real historical locations on Earth, pointing us directly to the suspect's hand tool.
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
2/8 of 48 = ?
1/3 of 3 = ?
2/6 of 33 = ?
1/10 of 100 = ?
3/4 of 12 = ?
1/4 of 32 = ?
1/5 of 20 = ?
4/10 of 5 = ?
1/3 of 15 = ?
2/6 of 21 = ?
3/10 of 10 = ?
Step 2 — cross out the sentence with each answer
1.The villain hijacked the telescope video feed, then unsubscribed all academy members.
2.The villain hacked the geography leaderboards, then deleted the star constellation logs.
3.The villain hijacked the telescope video feed, then swapped the telescope coordinates.
4.The villain overloaded the server with space trivia, then unsubscribed all academy members.
5.The villain overloaded the server with space trivia, then swapped the telescope coordinates.
6.The villain flooded the chat with cosmic emojis, then scrambled the map of ancient rome.
7.The villain hijacked the telescope video feed, then stole the golden astro blook.
8.The villain locked the historic timeline database, then stole the golden astro blook.
9.The villain locked the historic timeline database, then scrambled the map of ancient rome.
10.The villain overloaded the server with space trivia, then deleted the star constellation logs.
11.The villain flooded the chat with cosmic emojis, then swapped the telescope coordinates.
12.The villain locked the historic timeline database, then swapped the telescope coordinates.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Cosmic Stream Sabotage
Culprit: Lovelace (Blook Storm · Chronos Glitch · Blue Stylus · Solar Orange Strands · Stardust Flash)
- Clue 1 (Fractions of a number): "THE VILLAIN DOES NOT HAVE THE PIXEL CLOAK"3/6 of 58 = 29 (T) · 2/10 of 130 = 26 (E) · 2/6 of 21 = 7 (N) · 2/8 of 148 = 37 (X) · 1/4 of 40 = 10 (P) · 4/8 of 32 = 16 (O) · 2/10 of 115 = 23 (C) · 1/3 of 96 = 32 (K) · 8/10 of 5 = 4 (V) · 3/6 of 66 = 33 (L) · 2/5 of 45 = 18 (D) · 3/4 of 48 = 36 (H) · 2/8 of 68 = 17 (S) · 1/6 of 150 = 25 (A) · 4/8 of 78 = 39 (I)
- Clue 2 (Multi-step word problems): "BLUE STYLUS"The Lead Investigator collected 145 trivia tokens in the morning and 3 trivia tokens in the afternoon, then split them equally among 2 The Astronomy Club. How many trivia tokens did each get? = 74 (B) · The Lead Investigator earned 5 model rockets in each of 6 rounds, plus 59 bonus model rockets. Then 13 model rockets were lost. How many model rockets are left? = 76 (S) · The Lead Investigator filled 5 boxes with 7 model rockets each, then found 23 more model rockets. How many model rockets are there in all? = 58 (Y) · The Lead Investigator earned 5 globes in each of 2 rounds, plus 23 bonus globes. Then 1 globes were lost. How many globes are left? = 32 (U) · There were 236 globes in all. 28 globes were set aside. The rest were shared equally among 4 The Astronomy Club. How many globes did each get? = 52 (E) · The Lead Investigator earned 2 globes in each of 5 rounds, plus 81 bonus globes. Then 5 globes were lost. How many globes are left? = 86 (L) · There were 73 trivia tokens in all. 9 trivia tokens were set aside. The rest were shared equally among 8 The Astronomy Club. How many trivia tokens did each get? = 8 (T)
- Clue 3 (Order of operations): "THEY FLINCHED AT A STARDUST FLASH"9 × 4 - 11 = 25 (T) · 6 × 8 - 12 = 36 (U) · 6 × 12 - 15 = 57 (L) · 58 + 2 × 3 = 64 (R) · 14 + 6 × 7 = 56 (S) · 13 + 2 × 3 = 19 (H) · 6 × 4 - 8 = 16 (Y) · 20 + 3 × 2 = 26 (F) · 12 + 3 × 6 = 30 (C) · 11 × 6 - 3 = 63 (D) · 1 + 9 × 4 = 37 (I) · 2 + 2 × 2 = 6 (E) · 6 × 11 - 20 = 46 (A) · 7 + 2 × 3 = 13 (N)
- Clue 4 (Multiplication facts (1-12)): "WE FOUND SOLAR ORANGE STRANDS"9 × 6 = 54 (W) · 11 × 4 = 44 (F) · 3 × 9 = 27 (U) · 8 × 2 = 16 (T) · 9 × 12 = 108 (S) · 4 × 5 = 20 (D) · 7 × 6 = 42 (O) · 4 × 12 = 48 (L) · 1 × 1 = 1 (E) · 7 × 5 = 35 (G) · 6 × 10 = 60 (A) · 7 × 7 = 49 (N) · 1 × 4 = 4 (R)
- Clue 5 (Fractions of a number): surviving statement (box 6) → Lovelace2/8 of 48 = 12 · 1/3 of 3 = 1 · 2/6 of 33 = 11 · 1/10 of 100 = 10 · 3/4 of 12 = 9 · 1/4 of 32 = 8 · 1/5 of 20 = 4 · 4/10 of 5 = 2 · 1/3 of 15 = 5 · 2/6 of 21 = 7 · 3/10 of 10 = 3
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Fractions of a number, Multi-step word problems, Order of operations, Multiplication
- Reading level
- grades 5-6
- Theme
- The Cosmic Stream Sabotage — set in Cosmos Academy Network
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects