Grade 4Reading: grades 3-4Place valueMultiplicationRoundingAdditionDivision
The Mystery of the Sky Pirate's Spark
The legendary Glowstone has been taken from the great treehouse temple! A mysterious sky pirate slipped through the canopy under the cover of night. Only the cleverest detective can follow the clues left behind and save the island.
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 | Explorer Tool | Backpack Toy | Map Grip | Bandana | Distraction |
|---|---|---|---|---|---|
| Clara | Compass Badge | Net Shooter | Right-handed | Blue Bandana | Loud Parrot |
| Finn | Glider Wings | Slime Launcher | Left-handed | Green Bandana | Loud Parrot |
| Leo | Spyglass Lens | Slime Launcher | Right-handed | Green Bandana | Loud Parrot |
| Toby | Rope Lasso | Slime Launcher | Right-handed | Green Bandana | Loud Parrot |
| Piper | Spyglass Lens | Smoke Bomb | Right-handed | Blue Bandana | Loud Parrot |
| Beckett | Grappling Hook | Net Shooter | Right-handed | Green Bandana | Itchy Vines |
| Nellie | Spyglass Lens | Bubble Blaster | Right-handed | Blue Bandana | Itchy Vines |
| Hudson | Spyglass Lens | Sparkler Wand | Left-handed | Green Bandana | Shiny Coins |
| Drake | Grappling Hook | Smoke Bomb | Right-handed | Blue Bandana | Loud Parrot |
| Kira | Grappling Hook | Smoke Bomb | Left-handed | Blue Bandana | Loud Parrot |
| Silas | Spyglass Lens | Smoke Bomb | Left-handed | Green Bandana | Shiny Coins |
| Marco | Grappling Hook | Sparkler Wand | Left-handed | Blue Bandana | Itchy Vines |
| Marina | Compass Badge | Sparkler Wand | Right-handed | Red Bandana | Shiny Coins |
| Jack | Grappling Hook | Smoke Bomb | Left-handed | Green Bandana | Shiny Coins |
| Sacagawea | Glider Wings | Bubble Blaster | Right-handed | Blue Bandana | Loud Parrot |
| Mae | Rope Lasso | Net Shooter | Right-handed | Blue Bandana | Loud Parrot |
| Wyatt | Rope Lasso | Slime Launcher | Right-handed | Red Bandana | Loud Parrot |
| Freya | Glider Wings | Smoke Bomb | Right-handed | Blue Bandana | Shiny Coins |
| Caspian | Glider Wings | Smoke Bomb | Left-handed | Green Bandana | Loud Parrot |
| Sienna | Compass Badge | Smoke Bomb | Left-handed | Red Bandana | Shiny Coins |
| Amelia | Glider Wings | Sparkler Wand | Left-handed | Green Bandana | Loud Parrot |
Clue 1
Place value
You find a locked chest on the ship deck. The number code has a secret value in the tens place.
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
7000
300
90
T
7000
300
4000
90
70
1000
10
90
500
20
10
T
7000
900
500
90
T
7000
300
90
400
900
400
400
6000
90
400
6000
40
500
T
7000
90
100
What is the value of the 7 in 37,328?T
What is the value of the 4 in 74,928?I
What is the value of the 7 in 976?F
What is the value of the 6 in 46,382?L
What is the value of the 2 in 123?N
What is the value of the 1 in 519?O
What is the value of the 4 in 9,416?B
What is the value of the 1 in 132?R
What is the value of the 5 in 523?S
What is the value of the 1 in 31,272?D
What is the value of the 9 in 697?E
What is the value of the 4 in 546?A
What is the value of the 9 in 926?U
What is the value of the 3 in 5,314?H
0/14 letters found
Clue 2
Multiplication facts (1-12)
To track the thief's escape path, you must count the crates stacked in neat rows on the dock.
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
60
35
81
T
60
35
96
81
56
35
81
32
40
T
60
35
81
90
28
121
55
96
T
60
35
T
60
35
81
96
132
132
96
2
35
T
60
35
28
66
40
12 × 5 =T
7 × 8 =F
8 × 12 =I
5 × 7 =H
9 × 9 =E
12 × 11 =R
4 × 8 =L
8 × 5 =D
2 × 1 =G
11 × 11 =P
6 × 11 =N
7 × 4 =A
5 × 11 =W
9 × 10 =M
0/14 letters found
Clue 3
Rounding
The thief's flying machine left a signal. The radar screen only shows the distance rounded to the nearest ten.
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
7000
170
130
110
30
230
230
3700
30
3000
20
170
30
110
130
200
130
4300
3700
T
7000
T
7000
170
130
230
5000
900
4300
2900
3700
200
200
5000
T
7000
Round 6,505 to the nearest thousandT
Round 113 to the nearest tenV
Round 3,740 to the nearest hundredA
Round 241 to the nearest hundredR
Round 4,868 to the nearest thousandO
Round 21 to the nearest tenS
Round 2,994 to the nearest thousandN
Round 29 to the nearest tenI
Round 133 to the nearest tenE
Round 230 to the nearest tenL
Round 4,296 to the nearest hundredD
Round 924 to the nearest hundredU
Round 174 to the nearest tenH
Round 2,883 to the nearest hundredP
0/14 letters found
Clue 4
Addition
A friendly monkey helps you count all the stolen fruit dropped along the muddy path.
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
8562
3054
4035
6686
9361
4591
3596
6517
5798
9663
9361
3054
5798
6517
4591
3596
6517
4591
6517
9663
3054
4035
5020
6686
4591
5020
5897
3054
5798
9183
6517
4591
6267
5897
3340 + 5222 =W
3998 + 2688 =O
6041 + 3142 =R
5755 + 3908 =L
3016 + 2004 =T
4116 + 2151 =C
4113 + 1784 =H
1422 + 2174 =D
3851 + 2666 =A
2003 + 2032 =F
1899 + 3899 =B
2073 + 2518 =N
1945 + 1109 =E
5007 + 4354 =U
0/14 letters found
Clue 5
Division facts (1-12) — the last clue
The crew splits the supply boxes evenly among the scout boats to speed up the chase.
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
21 ÷ 3 = ?
16 ÷ 2 = ?
12 ÷ 12 = ?
20 ÷ 2 = ?
15 ÷ 5 = ?
40 ÷ 8 = ?
32 ÷ 8 = ?
99 ÷ 9 = ?
18 ÷ 9 = ?
54 ÷ 6 = ?
12 ÷ 2 = ?
Step 2 — cross out the sentence with each answer
1.The villain tangled the guard with a rope lasso, then trapped the dog with a net shooter.
2.The villain swung on a grappling hook, then lit up the trail with a sparkler wand.
3.The villain swung on a grappling hook, then trapped the dog with a net shooter.
4.The villain swung on a grappling hook, then sprayed soapy suds with a bubble blaster.
5.The villain peered through a spyglass lens, then fired a gooey slime launcher.
6.The villain peered through a spyglass lens, then trapped the dog with a net shooter.
7.The villain swung on a grappling hook, then vanished behind a smoke bomb.
8.The villain peered through a spyglass lens, then vanished behind a smoke bomb.
9.The villain soared away on glider wings, then trapped the dog with a net shooter.
10.The villain swung on a grappling hook, then fired a gooey slime launcher.
11.The villain tangled the guard with a rope lasso, then fired a gooey slime launcher.
12.The villain checked their compass badge, then trapped the dog with a net shooter.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Sky Pirate's Spark
Culprit: Clara (Compass Badge · Net Shooter · Right-handed · Blue Bandana · Loud Parrot)
- Clue 1 (Place value): "THE THIEF DOES NOT USE THE BUBBLE BLASTER"What is the value of the 7 in 37,328? = 7000 (T) · What is the value of the 4 in 74,928? = 4000 (I) · What is the value of the 7 in 976? = 70 (F) · What is the value of the 6 in 46,382? = 6000 (L) · What is the value of the 2 in 123? = 20 (N) · What is the value of the 1 in 519? = 10 (O) · What is the value of the 4 in 9,416? = 400 (B) · What is the value of the 1 in 132? = 100 (R) · What is the value of the 5 in 523? = 500 (S) · What is the value of the 1 in 31,272? = 1000 (D) · What is the value of the 9 in 697? = 90 (E) · What is the value of the 4 in 546? = 40 (A) · What is the value of the 9 in 926? = 900 (U) · What is the value of the 3 in 5,314? = 300 (H)
- Clue 2 (Multiplication facts (1-12)): "THE THIEF HELD THE MAP WITH THEIR RIGHT HAND"12 × 5 = 60 (T) · 7 × 8 = 56 (F) · 8 × 12 = 96 (I) · 5 × 7 = 35 (H) · 9 × 9 = 81 (E) · 12 × 11 = 132 (R) · 4 × 8 = 32 (L) · 8 × 5 = 40 (D) · 2 × 1 = 2 (G) · 11 × 11 = 121 (P) · 6 × 11 = 66 (N) · 7 × 4 = 28 (A) · 5 × 11 = 55 (W) · 9 × 10 = 90 (M)
- Clue 3 (Rounding): "THE VILLAIN SHIVERED AT THE LOUD PARROT"Round 6,505 to the nearest thousand = 7000 (T) · Round 113 to the nearest ten = 110 (V) · Round 3,740 to the nearest hundred = 3700 (A) · Round 241 to the nearest hundred = 200 (R) · Round 4,868 to the nearest thousand = 5000 (O) · Round 21 to the nearest ten = 20 (S) · Round 2,994 to the nearest thousand = 3000 (N) · Round 29 to the nearest ten = 30 (I) · Round 133 to the nearest ten = 130 (E) · Round 230 to the nearest ten = 230 (L) · Round 4,296 to the nearest hundred = 4300 (D) · Round 924 to the nearest hundred = 900 (U) · Round 174 to the nearest ten = 170 (H) · Round 2,883 to the nearest hundred = 2900 (P)
- Clue 4 (Addition): "WE FOUND A BLUE BANDANA LEFT ON THE BRANCH"3340 + 5222 = 8562 (W) · 3998 + 2688 = 6686 (O) · 6041 + 3142 = 9183 (R) · 5755 + 3908 = 9663 (L) · 3016 + 2004 = 5020 (T) · 4116 + 2151 = 6267 (C) · 4113 + 1784 = 5897 (H) · 1422 + 2174 = 3596 (D) · 3851 + 2666 = 6517 (A) · 2003 + 2032 = 4035 (F) · 1899 + 3899 = 5798 (B) · 2073 + 2518 = 4591 (N) · 1945 + 1109 = 3054 (E) · 5007 + 4354 = 9361 (U)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Clara21 ÷ 3 = 7 · 16 ÷ 2 = 8 · 12 ÷ 12 = 1 · 20 ÷ 2 = 10 · 15 ÷ 5 = 3 · 40 ÷ 8 = 5 · 32 ÷ 8 = 4 · 99 ÷ 9 = 11 · 18 ÷ 9 = 2 · 54 ÷ 6 = 9 · 12 ÷ 2 = 6
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Place value, Multiplication, Rounding, Addition, Division
- Reading level
- grades 3-4
- Theme
- The Mystery of the Sky Pirate's Spark — set in Treehouse Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects