🦄 UnicornsGrade 5Reading: grades 5-6RoundingSkip countingWord problemsFractions of a numberDivision
The Starlight Horn Mystery
During the annual Solstice Glow Celebration, someone snuck into the Crystal Spire and stole the sacred Starlight Orb! Without it, the rainbow bridges across Starhaven will fade away. The Unicorn Guard has gathered clues to catch the culprit before dawn.
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 | Horn Spell | Enchanted Gear | Dominant Hoof | Mane Color | Allergy |
|---|---|---|---|---|---|
| Marigold | Cloud Dash | Glitter Wings | Left Hooved | Golden Yellow Mane | Sour Lemon |
| Willow | Glimmer Burst | Glitter Wings | Left Hooved | Neon Pink Mane | Crushed Marshmallow |
| Twinkle | Glimmer Burst | Star Bridle | Left Hooved | Cobalt Blue Mane | Crushed Marshmallow |
| Nova | Glimmer Burst | Glitter Wings | Right Hooved | Cobalt Blue Mane | Sour Lemon |
| Blossom | Cloud Dash | Star Bridle | Right Hooved | Cobalt Blue Mane | Sour Lemon |
| Sapphire | Starlight Shield | Star Bridle | Right Hooved | Cobalt Blue Mane | Sour Lemon |
| Radiant | Rainbow Beam | Crystal Bell | Right Hooved | Neon Pink Mane | Sour Lemon |
| Sparkles | Glimmer Burst | Silver Saddle | Right Hooved | Neon Pink Mane | Fresh Peppermint |
| Glitterwing | Starlight Shield | Crystal Bell | Left Hooved | Golden Yellow Mane | Sour Lemon |
| Penelope | Glimmer Burst | Moonstone Cape | Right Hooved | Cobalt Blue Mane | Sour Lemon |
| Pippin | Prism Wave | Crystal Bell | Right Hooved | Cobalt Blue Mane | Fresh Peppermint |
| Barnaby | Prism Wave | Crystal Bell | Left Hooved | Neon Pink Mane | Sour Lemon |
| Sunny | Starlight Shield | Glitter Wings | Left Hooved | Cobalt Blue Mane | Sour Lemon |
| Zephyr | Glimmer Burst | Moonstone Cape | Right Hooved | Neon Pink Mane | Sour Lemon |
| Starlight | Rainbow Beam | Moonstone Cape | Left Hooved | Neon Pink Mane | Fresh Peppermint |
| Echo | Prism Wave | Star Bridle | Left Hooved | Cobalt Blue Mane | Sour Lemon |
| Sterling | Glimmer Burst | Moonstone Cape | Left Hooved | Neon Pink Mane | Fresh Peppermint |
| Felix | Cloud Dash | Glitter Wings | Left Hooved | Golden Yellow Mane | Fresh Peppermint |
| Jasper | Glimmer Burst | Star Bridle | Right Hooved | Cobalt Blue Mane | Fresh Peppermint |
| Celeste | Prism Wave | Silver Saddle | Left Hooved | Cobalt Blue Mane | Sour Lemon |
| Clover | Starlight Shield | Silver Saddle | Right Hooved | Cobalt Blue Mane | Sour Lemon |
Clue 1
Rounding
The sensor array at the Starfall Gate rounded the magical energy surge to determine which entry point was breached.
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
200
2000
50
T
200
2000
900
50
7000
70
900
70
2900
90
T
200
1700
50
300
130
300
4300
90
90
2900
170
T
200
90
2900
50
1300
300
9000
50
Round 206 to the nearest hundredT
Round 92 to the nearest tenO
Round 170 to the nearest tenS
Round 932 to the nearest hundredI
Round 2,920 to the nearest hundredN
Round 6,578 to the nearest thousandF
Round 4,296 to the nearest hundredM
Round 2,251 to the nearest thousandH
Round 274 to the nearest hundredA
Round 50 to the nearest tenE
Round 9,319 to the nearest thousandP
Round 1,313 to the nearest hundredC
Round 72 to the nearest tenD
Round 129 to the nearest tenR
Round 1,660 to the nearest hundredW
0/15 letters found
Clue 2
Skip counting
To track the getaway trail across the Cloud Bridge, you count the glowing hoofprints pattern step by step.
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
120
27
100
70
90
T
120
130
100
8
8
8
22
70
22
T
120
26
22
18
65
10
26
20
14
22
26
90
24
27
T
120
27
20
20
10
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140T
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120E
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18M
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80W
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30G
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75K
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, ___, 21, 24C
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33H
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14F
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24O
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150N
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26A
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12S
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30R
0/15 letters found
Clue 3
Word problems
The meadow guards tallied up the scattered magic items left near the three pasture glades.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Someonescaredthevillainoffwith .
S
16
77
7
11
68
89
14
77
N
Meadow Guard lined up 2 rows of 8 sugar cubes. How many sugar cubes in all?S
Meadow Guard found 5 rainbow berries yesterday and 2 more today. How many rainbow berries in all?U
Meadow Guard found 33 sugar cubes yesterday and 56 more today. How many sugar cubes in all?E
Meadow Guard lined up 2 rows of 7 star petals. How many star petals in all?M
There were 46 rainbow berries. 35 were used up. How many rainbow berries are left?R
Meadow Guard found 42 rainbow berries yesterday and 35 more today. How many rainbow berries in all?O
There were 75 star petals. 7 were used up. How many star petals are left?L
0/7 letters found
Clue 4
Fractions of a number
Analyzing the leftover potion in the Star Vault reveals what fraction of the magic supply was taken.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
A
27
21
20
32
A
27
13
10
32
13
31
25
9
A
27
15
2
11
10
2
A
27
14
36
18
A
27
11
36
2
20
35
35
25
36
1/5 of 135 =A
2/10 of 180 =D
5/10 of 40 =O
2/3 of 48 =B
1/3 of 45 =I
4/8 of 50 =E
2/6 of 30 =T
6/8 of 24 =W
1/6 of 12 =R
5/6 of 42 =P
1/6 of 186 =U
1/6 of 78 =L
1/2 of 28 =N
1/4 of 36 =H
2/10 of 105 =C
1/2 of 22 =S
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
To narrow down the suspect list, the royal council divided the patrol logs evenly among the investigators.
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
22 ÷ 2 = ?
36 ÷ 9 = ?
11 ÷ 11 = ?
50 ÷ 10 = ?
72 ÷ 9 = ?
14 ÷ 2 = ?
27 ÷ 9 = ?
99 ÷ 11 = ?
2 ÷ 1 = ?
50 ÷ 5 = ?
144 ÷ 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain performed a cloud dash, then tightened a star bridle.
2.The villain raised a starlight shield, then flapped glitter wings.
3.The villain summoned a prism wave, then draped a moonstone cape.
4.The villain triggered a glimmer burst, then flapped glitter wings.
5.The villain raised a starlight shield, then rang a crystal bell.
6.The villain raised a starlight shield, then adjusted a silver saddle.
7.The villain performed a cloud dash, then adjusted a silver saddle.
8.The villain fired a rainbow beam, then tightened a star bridle.
9.The villain summoned a prism wave, then flapped glitter wings.
10.The villain fired a rainbow beam, then adjusted a silver saddle.
11.The villain raised a starlight shield, then tightened a star bridle.
12.The villain performed a cloud dash, then rang a crystal bell.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Starlight Horn Mystery
Culprit: Clover (Starlight Shield · Silver Saddle · Right Hooved · Cobalt Blue Mane · Sour Lemon)
- Clue 1 (Rounding): "THE THIEF DID NOT WEAR A MOONSTONE CAPE"Round 206 to the nearest hundred = 200 (T) · Round 92 to the nearest ten = 90 (O) · Round 170 to the nearest ten = 170 (S) · Round 932 to the nearest hundred = 900 (I) · Round 2,920 to the nearest hundred = 2900 (N) · Round 6,578 to the nearest thousand = 7000 (F) · Round 4,296 to the nearest hundred = 4300 (M) · Round 2,251 to the nearest thousand = 2000 (H) · Round 274 to the nearest hundred = 300 (A) · Round 50 to the nearest ten = 50 (E) · Round 9,319 to the nearest thousand = 9000 (P) · Round 1,313 to the nearest hundred = 1300 (C) · Round 72 to the nearest ten = 70 (D) · Round 129 to the nearest ten = 130 (R) · Round 1,660 to the nearest hundred = 1700 (W)
- Clue 2 (Skip counting): "THE WITNESS SAW A TRACK FROM A RIGHT HOOF"Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (T) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (E) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (M) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (W) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30 = 24 (G) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (K) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, ___, 21, 24 = 18 (C) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (H) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (F) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24 = 20 (O) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (N) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (A) · Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (S) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (R)
- Clue 3 (Word problems): "SOUR LEMON"Meadow Guard lined up 2 rows of 8 sugar cubes. How many sugar cubes in all? = 16 (S) · Meadow Guard found 5 rainbow berries yesterday and 2 more today. How many rainbow berries in all? = 7 (U) · Meadow Guard found 33 sugar cubes yesterday and 56 more today. How many sugar cubes in all? = 89 (E) · Meadow Guard lined up 2 rows of 7 star petals. How many star petals in all? = 14 (M) · There were 46 rainbow berries. 35 were used up. How many rainbow berries are left? = 11 (R) · Meadow Guard found 42 rainbow berries yesterday and 35 more today. How many rainbow berries in all? = 77 (O) · There were 75 star petals. 7 were used up. How many star petals are left? = 68 (L)
- Clue 4 (Fractions of a number): "A COBALT BLUE HAIR STRAND WAS DROPPED"1/5 of 135 = 27 (A) · 2/10 of 180 = 36 (D) · 5/10 of 40 = 20 (O) · 2/3 of 48 = 32 (B) · 1/3 of 45 = 15 (I) · 4/8 of 50 = 25 (E) · 2/6 of 30 = 10 (T) · 6/8 of 24 = 18 (W) · 1/6 of 12 = 2 (R) · 5/6 of 42 = 35 (P) · 1/6 of 186 = 31 (U) · 1/6 of 78 = 13 (L) · 1/2 of 28 = 14 (N) · 1/4 of 36 = 9 (H) · 2/10 of 105 = 21 (C) · 1/2 of 22 = 11 (S)
- Clue 5 (Division facts (1-12)): surviving statement (box 6) → Clover22 ÷ 2 = 11 · 36 ÷ 9 = 4 · 11 ÷ 11 = 1 · 50 ÷ 10 = 5 · 72 ÷ 9 = 8 · 14 ÷ 2 = 7 · 27 ÷ 9 = 3 · 99 ÷ 11 = 9 · 2 ÷ 1 = 2 · 50 ÷ 5 = 10 · 144 ÷ 12 = 12
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Rounding, Skip counting, Word problems, Fractions of a number, Division
- Reading level
- grades 5-6
- Theme
- The Starlight Horn Mystery — set in The Prismatic Meadows of Starhaven
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects