🦄 UnicornsGrade 5Reading: grades 5-6MultiplicationFractions of a numberOrder of operationsRoundingDivision
The Case of the Prism Academy Heist
The legendary Crystal Horn has been stolen from the Prism Academy! A rogue unicorn has used forbidden magic to swipe the horn, leaving a trail of shimmering hoofprints. It is up to our young detective to track down the thief before the Valley loses its sparkle forever.
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 | Unicorn Magic | Enchanted Gear | Writing Style | Mane Style | Vulnerability |
|---|---|---|---|---|---|
| Amethyst | frost breeze sparks | glowing aura tiara | right-hoofed writer | neon pink braids | clanging brass bells |
| Topaz | storm cloud conjuring | pegasus speed saddle | right-hoofed writer | pastel blue curls | sour green apples |
| Opal | frost breeze sparks | golden wing boots | left-hoofed writer | bright gold waves | sour green apples |
| Diamond | storm cloud conjuring | pegasus speed saddle | left-hoofed writer | pastel blue curls | sour green apples |
| Glimmer | frost breeze sparks | golden wing boots | right-hoofed writer | bright gold waves | clanging brass bells |
| Sapphire | rainbow blast beam | telepathic headpiece | right-hoofed writer | pastel blue curls | shiny silver mirrors |
| Starflight | crystal shield magic | golden wing boots | left-hoofed writer | pastel blue curls | clanging brass bells |
| Ruby | storm cloud conjuring | glitter dust cloak | left-hoofed writer | pastel blue curls | sour green apples |
| Beryl | storm cloud conjuring | telepathic headpiece | right-hoofed writer | bright gold waves | sour green apples |
| Pearl | frost breeze sparks | golden wing boots | right-hoofed writer | pastel blue curls | clanging brass bells |
| Peridot | storm cloud conjuring | golden wing boots | left-hoofed writer | neon pink braids | shiny silver mirrors |
| Luna | crystal shield magic | glowing aura tiara | right-hoofed writer | pastel blue curls | clanging brass bells |
| Twilight | rainbow blast beam | golden wing boots | left-hoofed writer | neon pink braids | clanging brass bells |
| Cadance | frost breeze sparks | pegasus speed saddle | left-hoofed writer | pastel blue curls | sour green apples |
| Amber | crystal shield magic | glitter dust cloak | left-hoofed writer | pastel blue curls | shiny silver mirrors |
| Starlight | star portal creation | golden wing boots | right-hoofed writer | neon pink braids | shiny silver mirrors |
| Quartz | star portal creation | glitter dust cloak | left-hoofed writer | pastel blue curls | sour green apples |
| Jasper | star portal creation | glitter dust cloak | right-hoofed writer | bright gold waves | shiny silver mirrors |
| Emerald | star portal creation | telepathic headpiece | left-hoofed writer | pastel blue curls | sour green apples |
| Onyx | frost breeze sparks | glowing aura tiara | left-hoofed writer | bright gold waves | clanging brass bells |
| Sunburst | storm cloud conjuring | telepathic headpiece | right-hoofed writer | bright gold waves | clanging brass bells |
Clue 1
Multiplication facts (1-12)
To find the first clue, we must count the magical star crystals. They are arranged in equal rows on the academy altar, waiting to be multiplied.
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
90
40
120
T
90
40
25
120
96
100
3
120
35
21
3
T
90
40
45
7
120
45
T
90
120
36
120
110
45
T
90
40
25
33
40
120
45
100
110
25
120
33
120
10 × 9 =T
8 × 5 =H
5 × 9 =A
10 × 10 =D
3 × 1 =O
3 × 11 =C
7 × 1 =V
7 × 5 =S
11 × 10 =P
5 × 5 =I
10 × 12 =E
3 × 7 =N
9 × 4 =L
12 × 8 =F
0/14 letters found
Clue 2
Fractions of a number
The next clue is hidden inside the treasure chest. We must calculate a fraction of the total glittering gems to unlock the keyhole.
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
12
28
26
39
37
39
29
26
3
T
12
31
11
4
T
12
26
39
3
25
7
26
39
31
4
T
12
28
T
12
28
26
4
11
33
26
40
T
12
28
25
25
40
2/4 of 24 =T
5/10 of 80 =F
1/2 of 14 =D
3/10 of 130 =S
1/6 of 66 =R
1/4 of 12 =C
2/6 of 87 =P
2/4 of 66 =L
2/10 of 185 =U
3/6 of 56 =H
2/8 of 100 =O
4/8 of 62 =W
4/8 of 8 =I
2/10 of 130 =E
0/14 letters found
Clue 3
Order of operations
Our path is blocked by a magic potion lock. We have to solve the multi-step recipe using the correct order of operations to open the secret door.
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
45
70
76
T
45
70
23
76
74
41
12
40
74
41
32
44
24
32
26
41
75
41
76
76
40
12
65
65
66
76
24
11 × 6 - 21 =T
16 + 2 × 8 =O
28 + 2 × 8 =M
11 × 8 - 18 =H
5 × 10 - 9 =R
11 × 9 - 25 =F
62 + 2 × 2 =L
9 × 10 - 25 =P
6 × 4 - 12 =A
56 + 4 × 5 =E
12 + 2 × 6 =S
7 + 2 × 8 =I
28 + 2 × 6 =N
11 × 8 - 13 =G
8 + 9 × 2 =U
0/15 letters found
Clue 4
Rounding
A pressure pad demands a weight check, but the old stone dial only displays values rounded to the nearest ten. Round the weight to proceed!
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
50
200
3000
9000
700
90
130
170
7000
300
290
200
30
500
30
700
200
1300
700
370
30
300
7000
290
290
70
200
300
1300
200
90
200
Round 46 to the nearest tenW
Round 369 to the nearest tenR
Round 168 to the nearest tenP
Round 1,310 to the nearest hundredC
Round 32 to the nearest tenL
Round 462 to the nearest hundredB
Round 291 to the nearest hundredS
Round 88 to the nearest tenN
Round 126 to the nearest tenD
Round 71 to the nearest tenH
Round 723 to the nearest hundredU
Round 288 to the nearest tenT
Round 247 to the nearest hundredE
Round 6,881 to the nearest thousandA
Round 3,463 to the nearest thousandF
Round 8,695 to the nearest thousandO
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
To get the final clue, we must divide the enchanted sugar cubes equally among the hungry baby pegasi guarding the final bridge.
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
70 ÷ 10 = ?
33 ÷ 11 = ?
90 ÷ 9 = ?
20 ÷ 4 = ?
16 ÷ 4 = ?
45 ÷ 5 = ?
40 ÷ 5 = ?
55 ÷ 5 = ?
24 ÷ 2 = ?
72 ÷ 12 = ?
4 ÷ 2 = ?
Step 2 — cross out the sentence with each answer
1.The villain summons a dark storm cloud, then flies over the gate on a pegasus speed saddle.
2.The villain opens a shimmering star portal, then deflects the guards using a glowing aura tiara.
3.The villain unleashes a burst of frost sparks, then flies over the gate on a pegasus speed saddle.
4.The villain unleashes a burst of frost sparks, then fades from sight under a glitter dust cloak.
5.The villain opens a shimmering star portal, then coordinates the escape with a telepathic headpiece.
6.The villain fires a brilliant rainbow blast, then coordinates the escape with a telepathic headpiece.
7.The villain summons a dark storm cloud, then fades from sight under a glitter dust cloak.
8.The villain fires a brilliant rainbow blast, then deflects the guards using a glowing aura tiara.
9.The villain fires a brilliant rainbow blast, then speeds away in golden wing boots.
10.The villain opens a shimmering star portal, then fades from sight under a glitter dust cloak.
11.The villain fires a brilliant rainbow blast, then fades from sight under a glitter dust cloak.
12.The villain raises a sturdy crystal shield, then fades from sight under a glitter dust cloak.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Prism Academy Heist
Culprit: Diamond (storm cloud conjuring · pegasus speed saddle · left-hoofed writer · pastel blue curls · sour green apples)
- Clue 1 (Multiplication facts (1-12)): "THE THIEF DOES NOT HAVE A TELEPATHIC HEADPIECE"10 × 9 = 90 (T) · 8 × 5 = 40 (H) · 5 × 9 = 45 (A) · 10 × 10 = 100 (D) · 3 × 1 = 3 (O) · 3 × 11 = 33 (C) · 7 × 1 = 7 (V) · 7 × 5 = 35 (S) · 11 × 10 = 110 (P) · 5 × 5 = 25 (I) · 10 × 12 = 120 (E) · 3 × 7 = 21 (N) · 9 × 4 = 36 (L) · 12 × 8 = 96 (F)
- Clue 2 (Fractions of a number): "THE SUSPECT WRITES CODES WITH THEIR LEFT HOOF"2/4 of 24 = 12 (T) · 5/10 of 80 = 40 (F) · 1/2 of 14 = 7 (D) · 3/10 of 130 = 39 (S) · 1/6 of 66 = 11 (R) · 1/4 of 12 = 3 (C) · 2/6 of 87 = 29 (P) · 2/4 of 66 = 33 (L) · 2/10 of 185 = 37 (U) · 3/6 of 56 = 28 (H) · 2/8 of 100 = 25 (O) · 4/8 of 62 = 31 (W) · 4/8 of 8 = 4 (I) · 2/10 of 130 = 26 (E)
- Clue 3 (Order of operations): "THE THIEF RAN FROM SOUR GREEN APPLES"11 × 6 - 21 = 45 (T) · 16 + 2 × 8 = 32 (O) · 28 + 2 × 8 = 44 (M) · 11 × 8 - 18 = 70 (H) · 5 × 10 - 9 = 41 (R) · 11 × 9 - 25 = 74 (F) · 62 + 2 × 2 = 66 (L) · 9 × 10 - 25 = 65 (P) · 6 × 4 - 12 = 12 (A) · 56 + 4 × 5 = 76 (E) · 12 + 2 × 6 = 24 (S) · 7 + 2 × 8 = 23 (I) · 28 + 2 × 6 = 40 (N) · 11 × 8 - 13 = 75 (G) · 8 + 9 × 2 = 26 (U)
- Clue 4 (Rounding): "WE FOUND PASTEL BLUE CURLS AT THE SCENE"Round 46 to the nearest ten = 50 (W) · Round 369 to the nearest ten = 370 (R) · Round 168 to the nearest ten = 170 (P) · Round 1,310 to the nearest hundred = 1300 (C) · Round 32 to the nearest ten = 30 (L) · Round 462 to the nearest hundred = 500 (B) · Round 291 to the nearest hundred = 300 (S) · Round 88 to the nearest ten = 90 (N) · Round 126 to the nearest ten = 130 (D) · Round 71 to the nearest ten = 70 (H) · Round 723 to the nearest hundred = 700 (U) · Round 288 to the nearest ten = 290 (T) · Round 247 to the nearest hundred = 200 (E) · Round 6,881 to the nearest thousand = 7000 (A) · Round 3,463 to the nearest thousand = 3000 (F) · Round 8,695 to the nearest thousand = 9000 (O)
- Clue 5 (Division facts (1-12)): surviving statement (box 1) → Diamond70 ÷ 10 = 7 · 33 ÷ 11 = 3 · 90 ÷ 9 = 10 · 20 ÷ 4 = 5 · 16 ÷ 4 = 4 · 45 ÷ 5 = 9 · 40 ÷ 5 = 8 · 55 ÷ 5 = 11 · 24 ÷ 2 = 12 · 72 ÷ 12 = 6 · 4 ÷ 2 = 2
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Multiplication, Fractions of a number, Order of operations, Rounding, Division
- Reading level
- grades 5-6
- Theme
- The Case of the Prism Academy Heist — set in Prism Academy for Young Unicorns
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects