Grade 4Reading: grades 3-4MultiplicationRoundingBar modelsFractions of a numberDivision
The Lost Sky-Scepter
The Grand Cartographer's magical Sky-Scepter has been stolen from the floating library! A rogue Sky Raider snuck past the wind guards. We must follow the clues in the clouds to find the thief before they control the winds 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 | Sky Tool | Pocket Gadget | Steering Hand | Head Gear | Silly Weakness |
|---|---|---|---|---|---|
| Flutter Faye | Robo-Parrot | Solar Compass | Right-Handed Steer | Silver Goggles | Squeaky Toys |
| Pegleg Polly | Smoke Bomb | Glimmer Lantern | Left-Handed Steer | Bright Orange Hat | Squeaky Toys |
| Scurvy Sid | Smoke Bomb | Magnetic Gloves | Right-Handed Steer | Silver Goggles | Squeaky Toys |
| Anchor Annie | Brass Spyglass | Rocket Boots | Right-Handed Steer | Neon Blue Hair | Tickle Feathers |
| Flapjack Fred | Smoke Bomb | Echo Whistle | Right-Handed Steer | Silver Goggles | Shiny Mirrors |
| Stormy Sam | Wind Sail | Magnetic Gloves | Right-Handed Steer | Silver Goggles | Shiny Mirrors |
| Sunny Sal | Wind Sail | Rocket Boots | Right-Handed Steer | Bright Orange Hat | Squeaky Toys |
| Hurricane Hal | Grappling Hook | Solar Compass | Right-Handed Steer | Neon Blue Hair | Shiny Mirrors |
| Eddy Ella | Smoke Bomb | Rocket Boots | Right-Handed Steer | Silver Goggles | Shiny Mirrors |
| Mistral Max | Brass Spyglass | Rocket Boots | Right-Handed Steer | Neon Blue Hair | Shiny Mirrors |
| Breezy Pip | Grappling Hook | Glimmer Lantern | Left-Handed Steer | Neon Blue Hair | Tickle Feathers |
| Aero Abby | Wind Sail | Echo Whistle | Left-Handed Steer | Neon Blue Hair | Shiny Mirrors |
| Gale-Force Gary | Grappling Hook | Echo Whistle | Right-Handed Steer | Bright Orange Hat | Tickle Feathers |
| Beacon Ben | Brass Spyglass | Magnetic Gloves | Right-Handed Steer | Neon Blue Hair | Shiny Mirrors |
| Compass Clara | Wind Sail | Glimmer Lantern | Left-Handed Steer | Neon Blue Hair | Tickle Feathers |
| Captain Barnaby | Smoke Bomb | Solar Compass | Right-Handed Steer | Silver Goggles | Squeaky Toys |
| Gusto Gus | Wind Sail | Rocket Boots | Left-Handed Steer | Silver Goggles | Shiny Mirrors |
| Cloud Captain Cal | Robo-Parrot | Glimmer Lantern | Right-Handed Steer | Neon Blue Hair | Shiny Mirrors |
| Zephyr Zach | Wind Sail | Rocket Boots | Right-Handed Steer | Neon Blue Hair | Shiny Mirrors |
| Windward Wendy | Robo-Parrot | Rocket Boots | Left-Handed Steer | Neon Blue Hair | Squeaky Toys |
| Sailor Skye | Robo-Parrot | Echo Whistle | Right-Handed Steer | Bright Orange Hat | Shiny Mirrors |
Clue 1
Multiplication facts (1-12)
We spot a shelf of cargo crates arranged in equal rows. Let us count them to find our first clue.
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
121
48
100
T
121
48
4
100
64
66
72
100
45
44
72
T
121
81
45
100
120
22
80
44
100
T
121
4
2
80
28
72
96
100
45
11 × 11 =T
12 × 4 =H
9 × 8 =O
8 × 12 =V
12 × 10 =M
9 × 9 =U
8 × 8 =F
11 × 2 =A
11 × 4 =N
2 × 1 =C
10 × 10 =E
4 × 1 =I
6 × 11 =D
8 × 10 =G
5 × 9 =S
4 × 7 =L
0/16 letters found
Clue 2
Rounding
The wind-speed dial on our airship only shows numbers rounded to the nearest ten. Read the dial to get the next clue.
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
4300
1300
3000
700
130
1700
1700
7000
130
20
200
T
4300
3000
3000
430
200
170
130
T
4300
1300
T
4300
1300
3000
430
130
110
1300
T
4300
1300
7000
20
300
Round 4,256 to the nearest hundredT
Round 1,312 to the nearest hundredH
Round 1,688 to the nearest hundredL
Round 113 to the nearest tenG
Round 652 to the nearest hundredV
Round 2,735 to the nearest thousandE
Round 6,766 to the nearest thousandA
Round 20 to the nearest tenN
Round 174 to the nearest tenW
Round 327 to the nearest hundredD
Round 130 to the nearest tenI
Round 429 to the nearest tenR
Round 158 to the nearest hundredS
0/13 letters found
Clue 3
Bar model word problems
We compare the lengths of the airship sails using a simple block diagram. The difference reveals our third clue.
Draw a bar model to solve each word problem. Its answer reveals a letter — write the letters in the boxes to fill in the missing word.
Someonescaredthevillainoffwith .
S
23
71
82
143
57
72
82
135
135
O
135
S
23
The red team has 24 airship gears and the blue team has 1 airship gears. How many more airship gears does the red team have?
draw a bar model
Answer:→S
The red team has 146 cloud coins and the blue team has 3 cloud coins. How many more cloud coins does the red team have?
draw a bar model
Answer:→N
One group collected 62 airship gears and another group collected 10 airship gears. How many airship gears in all?
draw a bar model
Answer:→M
The red team has 69 spyglass lenses and the blue team has 12 spyglass lenses. How many more spyglass lenses does the red team have?
draw a bar model
Answer:→Y
There were 139 map scraps in all. 4 map scraps were used. How many map scraps are left?
draw a bar model
Answer:→R
Deckhand Pip used 1/2 of the map scraps on the first day. The other 41 map scraps were used the next day. How many map scraps were there in all?
draw a bar model
Answer:→I
Deckhand Pip has 142 map scraps, packed 2 to a bag. How many bags can be filled?
draw a bar model
Answer:→H
0/7 letters found
Clue 4
Fractions of a number
A crate of glowing power crystals fell. Only a fraction of them still shine. Count the shining crystals to unlock this clue.
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
23
36
25
28
A
23
5
39
7
2
5
24
7
5
6
19
10
24
29
A
23
27
28
26
A
23
36
19
24
2
25
1/3 of 69 =A
6/8 of 8 =B
1/6 of 168 =R
4/8 of 52 =W
5/10 of 50 =T
1/2 of 78 =D
2/6 of 21 =O
5/6 of 12 =U
1/4 of 116 =H
2/6 of 57 =L
1/6 of 30 =N
3/5 of 45 =I
1/3 of 6 =F
2/6 of 108 =S
5/10 of 48 =E
0/15 letters found
Clue 5
Division facts (1-12) — the last clue
We must share the golden keyrings equally among our sky-patrol squads. The remaining amount gives us our final clue.
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
63 ÷ 7 = ?
48 ÷ 4 = ?
2 ÷ 2 = ?
72 ÷ 9 = ?
6 ÷ 3 = ?
45 ÷ 9 = ?
8 ÷ 2 = ?
35 ÷ 5 = ?
11 ÷ 1 = ?
48 ÷ 8 = ?
60 ÷ 6 = ?
Step 2 — cross out the sentence with each answer
1.The villain swung on a grappling hook, then checked a solar compass.
2.The villain peered through a brass spyglass, then snapped magnetic gloves.
3.The villain sent a robo-parrot, then lit a glimmer lantern.
4.The villain swung on a grappling hook, then snapped magnetic gloves.
5.The villain unfurled a wind sail, then checked a solar compass.
6.The villain tossed a smoke bomb, then checked a solar compass.
7.The villain tossed a smoke bomb, then blew an echo whistle.
8.The villain tossed a smoke bomb, then fired up rocket boots.
9.The villain peered through a brass spyglass, then fired up rocket boots.
10.The villain tossed a smoke bomb, then lit a glimmer lantern.
11.The villain swung on a grappling hook, then blew an echo whistle.
12.The villain unfurled a wind sail, then fired up rocket boots.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Lost Sky-Scepter
Culprit: Cloud Captain Cal (Robo-Parrot · Glimmer Lantern · Right-Handed Steer · Neon Blue Hair · Shiny Mirrors)
- Clue 1 (Multiplication facts (1-12)): "THE THIEF DOES NOT USE MAGNETIC GLOVES"11 × 11 = 121 (T) · 12 × 4 = 48 (H) · 9 × 8 = 72 (O) · 8 × 12 = 96 (V) · 12 × 10 = 120 (M) · 9 × 9 = 81 (U) · 8 × 8 = 64 (F) · 11 × 2 = 22 (A) · 11 × 4 = 44 (N) · 2 × 1 = 2 (C) · 10 × 10 = 100 (E) · 4 × 1 = 4 (I) · 6 × 11 = 66 (D) · 8 × 10 = 80 (G) · 5 × 9 = 45 (S) · 4 × 7 = 28 (L)
- Clue 2 (Rounding): "THE VILLAIN STEERS WITH THE RIGHT HAND"Round 4,256 to the nearest hundred = 4300 (T) · Round 1,312 to the nearest hundred = 1300 (H) · Round 1,688 to the nearest hundred = 1700 (L) · Round 113 to the nearest ten = 110 (G) · Round 652 to the nearest hundred = 700 (V) · Round 2,735 to the nearest thousand = 3000 (E) · Round 6,766 to the nearest thousand = 7000 (A) · Round 20 to the nearest ten = 20 (N) · Round 174 to the nearest ten = 170 (W) · Round 327 to the nearest hundred = 300 (D) · Round 130 to the nearest ten = 130 (I) · Round 429 to the nearest ten = 430 (R) · Round 158 to the nearest hundred = 200 (S)
- Clue 3 (Bar model word problems): "SHINY MIRRORS"The red team has 24 airship gears and the blue team has 1 airship gears. How many more airship gears does the red team have? = 23 (S) · The red team has 146 cloud coins and the blue team has 3 cloud coins. How many more cloud coins does the red team have? = 143 (N) · One group collected 62 airship gears and another group collected 10 airship gears. How many airship gears in all? = 72 (M) · The red team has 69 spyglass lenses and the blue team has 12 spyglass lenses. How many more spyglass lenses does the red team have? = 57 (Y) · There were 139 map scraps in all. 4 map scraps were used. How many map scraps are left? = 135 (R) · Deckhand Pip used 1/2 of the map scraps on the first day. The other 41 map scraps were used the next day. How many map scraps were there in all? = 82 (I) · Deckhand Pip has 142 map scraps, packed 2 to a bag. How many bags can be filled? = 71 (H)
- Clue 4 (Fractions of a number): "A STRAND OF NEON BLUE HAIR WAS LEFT"1/3 of 69 = 23 (A) · 6/8 of 8 = 6 (B) · 1/6 of 168 = 28 (R) · 4/8 of 52 = 26 (W) · 5/10 of 50 = 25 (T) · 1/2 of 78 = 39 (D) · 2/6 of 21 = 7 (O) · 5/6 of 12 = 10 (U) · 1/4 of 116 = 29 (H) · 2/6 of 57 = 19 (L) · 1/6 of 30 = 5 (N) · 3/5 of 45 = 27 (I) · 1/3 of 6 = 2 (F) · 2/6 of 108 = 36 (S) · 5/10 of 48 = 24 (E)
- Clue 5 (Division facts (1-12)): surviving statement (box 3) → Cloud Captain Cal63 ÷ 7 = 9 · 48 ÷ 4 = 12 · 2 ÷ 2 = 1 · 72 ÷ 9 = 8 · 6 ÷ 3 = 2 · 45 ÷ 9 = 5 · 8 ÷ 2 = 4 · 35 ÷ 5 = 7 · 11 ÷ 1 = 11 · 48 ÷ 8 = 6 · 60 ÷ 6 = 10
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Multiplication, Rounding, Bar models, Fractions of a number, Division
- Reading level
- grades 3-4
- Theme
- The Lost Sky-Scepter — set in Zephyr Cove, a land of floating islands and flying sailing ships
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects