Grade 4Reading: grades 3-4RoundingWord problemsAdditionSubtractionDivision
The Cloud Engine Caper
The gold-powered Cloud Engine has been stolen from the Sky Academy dock! Without it, our floating school will sink into the fog. We must find the Sky Bandit and recover the engine before it is too late.
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 Gadget | Airship Upgrade | Steering Hand | Goggle Strap Color | Favorite Snack |
|---|---|---|---|---|---|
| Officer Ollie | Spark Glove | Cloud Shields | Left-handed | Sky Blue | Cheese Crackers |
| Sienna Storm | Wind Whistle | Cloud Shields | Right-handed | Sky Blue | Maple Waffles |
| Pilot Penny | Glider Pack | Iron Anchor | Left-handed | Bright Yellow | Sour Apples |
| Finley Fly | Wind Whistle | Solar Wings | Left-handed | Bright Yellow | Sour Apples |
| Viper Vance | Grappling Bow | Stealth Sails | Right-handed | Sky Blue | Sour Apples |
| Harper Hover | Spark Glove | Cloud Shields | Right-handed | Neon Green | Cheese Crackers |
| Saber Swift | Spark Glove | Solar Wings | Left-handed | Bright Yellow | Cheese Crackers |
| Scout Sally | Spark Glove | Stealth Sails | Left-handed | Neon Green | Cheese Crackers |
| Dexter Drift | Spark Glove | Solar Wings | Left-handed | Neon Green | Maple Waffles |
| Rusty Rigg | Grappling Bow | Iron Anchor | Right-handed | Sky Blue | Cheese Crackers |
| Wendy Wing | Net Launcher | Solar Wings | Left-handed | Neon Green | Cheese Crackers |
| Piper Prop | Spark Glove | Cloud Shields | Right-handed | Sky Blue | Cheese Crackers |
| Nimbus Ned | Grappling Bow | Solar Wings | Right-handed | Sky Blue | Cheese Crackers |
| Zephyr Zach | Grappling Bow | Solar Wings | Right-handed | Sky Blue | Sour Apples |
| Skyler Cloud | Glider Pack | Solar Wings | Right-handed | Sky Blue | Cheese Crackers |
| Dash Daring | Spark Glove | Iron Anchor | Right-handed | Sky Blue | Cheese Crackers |
| Breezy Bob | Wind Whistle | Cloud Shields | Right-handed | Neon Green | Sour Apples |
| Ace Aerial | Grappling Bow | Solar Wings | Right-handed | Bright Yellow | Sour Apples |
| Echo Evans | Net Launcher | Cloud Shields | Left-handed | Sky Blue | Cheese Crackers |
| Captain Barnaby | Grappling Bow | Stealth Sails | Right-handed | Sky Blue | Cheese Crackers |
| Toby Turbo | Spark Glove | Stealth Sails | Right-handed | Neon Green | Cheese Crackers |
Clue 1
Rounding
We need to count the gear bags left in the hangar. Solve these cadet training problems to see how many bags we have left.
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
3000
500
1300
2900
7000
1100
700
430
T
3000
700
5000
1300
300
1100
5000
T
3000
90
300
1300
300
5000
50
7000
2300
110
430
1100
9000
300
Round 2,651 to the nearest thousandT
Round 9,025 to the nearest thousandG
Round 711 to the nearest hundredD
Round 475 to the nearest hundredH
Round 2,894 to the nearest hundredB
Round 46 to the nearest tenL
Round 5,212 to the nearest thousandO
Round 93 to the nearest tenU
Round 110 to the nearest tenW
Round 1,143 to the nearest hundredN
Round 1,256 to the nearest hundredE
Round 434 to the nearest tenI
Round 6,798 to the nearest thousandA
Round 324 to the nearest hundredS
Round 2,305 to the nearest hundredR
0/15 letters found
Clue 2
Word problems
The radar screen is dusty, so we can only read the rounded numbers. Solve this to clean the glass and find the flight path.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
R
55
36
31
78
28
78
69
40
D
E
D
There were 58 spyglass. 3 were used up. How many spyglass are left?R
There were 99 cloud bottle. 30 were used up. How many cloud bottle are left?A
There were 38 compass. 7 were used up. How many compass are left?G
Flight Cadet lined up 5 rows of 8 spyglass. How many spyglass in all?N
Flight Cadet lined up 7 rows of 4 cloud bottle. How many cloud bottle in all?T
Flight Cadet lined up 12 rows of 3 brass gear. How many brass gear in all?I
Flight Cadet found 7 sky map yesterday and 71 more today. How many sky map in all?H
0/7 letters found
Clue 3
Addition
Let us total up all the fuel canisters found near the dock. Add these numbers together to unlock the cargo log.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
O
5917
6062
9759
9042
2219
4326
8092
6062
9759
8092
5558
4326
6062
8092
6062
4109
2869
2010
4557
5083
4326
6062
4326
O
5917
9042
6163
4664
4326
4557
4326
9759
6163
3951 + 1966 =O
1390 + 829 =G
4719 + 5040 =A
6330 + 2712 =N
2472 + 2192 =H
2473 + 3589 =R
1344 + 666 =B
2540 + 1569 =U
3627 + 1931 =K
2124 + 2202 =E
1632 + 1237 =M
3467 + 1616 =W
1807 + 2750 =S
4266 + 1897 =T
4720 + 3372 =C
0/15 letters found
Clue 4
Subtraction
The thief dropped some map pieces during their escape. Subtract the missing pieces to find out which route they took.
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
1315
6168
7227
3006
4096
5181
8605
8605
7227
1334
3006
T
1315
8450
5181
8605
4435
5181
3006
5181
3006
1993
3061
3264
1259
5311
7227
7196
1458
1259
1458
8450
4014 - 2699 =T
4390 - 294 =N
11856 - 3251 =P
7644 - 2333 =U
10564 - 3337 =E
4480 - 1216 =B
7247 - 51 =C
3392 - 331 =Y
3432 - 2098 =D
4985 - 3726 =L
4836 - 401 =W
6462 - 1281 =A
12549 - 4099 =R
7281 - 4275 =S
4212 - 2219 =K
5826 - 4368 =O
8732 - 2564 =H
0/17 letters found
Clue 5
Division facts (1-12) — the last clue
We must divide our scout team evenly into the rescue gliders. Solve this to launch the planes and corner the thief.
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
84 ÷ 7 = ?
35 ÷ 7 = ?
22 ÷ 11 = ?
7 ÷ 1 = ?
6 ÷ 6 = ?
18 ÷ 2 = ?
12 ÷ 2 = ?
88 ÷ 8 = ?
80 ÷ 10 = ?
50 ÷ 5 = ?
27 ÷ 9 = ?
Step 2 — cross out the sentence with each answer
1.The villain soared over the deck with a Glider Pack, then soared toward the sun on Solar Wings.
2.The villain swung aboard using a Grappling Bow, then secured the stolen cargo with an Iron Anchor.
3.The villain trapped the guard dogs with a Net Launcher, then secured the stolen cargo with an Iron Anchor.
4.The villain disabled the alarm with a Spark Glove, then vanished into the mist behind Cloud Shields.
5.The villain disabled the alarm with a Spark Glove, then secured the stolen cargo with an Iron Anchor.
6.The villain summoned a thick mist with a Wind Whistle, then vanished into the mist behind Cloud Shields.
7.The villain trapped the guard dogs with a Net Launcher, then vanished into the mist behind Cloud Shields.
8.The villain trapped the guard dogs with a Net Launcher, then slipped away silently using Stealth Sails.
9.The villain soared over the deck with a Glider Pack, then escaped by firing up the Turbo Boosters.
10.The villain summoned a thick mist with a Wind Whistle, then secured the stolen cargo with an Iron Anchor.
11.The villain trapped the guard dogs with a Net Launcher, then soared toward the sun on Solar Wings.
12.The villain swung aboard using a Grappling Bow, then slipped away silently using Stealth Sails.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Cloud Engine Caper
Culprit: Piper Prop (Spark Glove · Cloud Shields · Right-handed · Sky Blue · Cheese Crackers)
- Clue 1 (Rounding): "THE BANDIT DOES NOT USE SOLAR WINGS"Round 2,651 to the nearest thousand = 3000 (T) · Round 9,025 to the nearest thousand = 9000 (G) · Round 711 to the nearest hundred = 700 (D) · Round 475 to the nearest hundred = 500 (H) · Round 2,894 to the nearest hundred = 2900 (B) · Round 46 to the nearest ten = 50 (L) · Round 5,212 to the nearest thousand = 5000 (O) · Round 93 to the nearest ten = 90 (U) · Round 110 to the nearest ten = 110 (W) · Round 1,143 to the nearest hundred = 1100 (N) · Round 1,256 to the nearest hundred = 1300 (E) · Round 434 to the nearest ten = 430 (I) · Round 6,798 to the nearest thousand = 7000 (A) · Round 324 to the nearest hundred = 300 (S) · Round 2,305 to the nearest hundred = 2300 (R)
- Clue 2 (Word problems): "RIGHT HANDED"There were 58 spyglass. 3 were used up. How many spyglass are left? = 55 (R) · There were 99 cloud bottle. 30 were used up. How many cloud bottle are left? = 69 (A) · There were 38 compass. 7 were used up. How many compass are left? = 31 (G) · Flight Cadet lined up 5 rows of 8 spyglass. How many spyglass in all? = 40 (N) · Flight Cadet lined up 7 rows of 4 cloud bottle. How many cloud bottle in all? = 28 (T) · Flight Cadet lined up 12 rows of 3 brass gear. How many brass gear in all? = 36 (I) · Flight Cadet found 7 sky map yesterday and 71 more today. How many sky map in all? = 78 (H)
- Clue 3 (Addition): "ORANGE CRACKER CRUMBS WERE ON THE SEAT"3951 + 1966 = 5917 (O) · 1390 + 829 = 2219 (G) · 4719 + 5040 = 9759 (A) · 6330 + 2712 = 9042 (N) · 2472 + 2192 = 4664 (H) · 2473 + 3589 = 6062 (R) · 1344 + 666 = 2010 (B) · 2540 + 1569 = 4109 (U) · 3627 + 1931 = 5558 (K) · 2124 + 2202 = 4326 (E) · 1632 + 1237 = 2869 (M) · 3467 + 1616 = 5083 (W) · 1807 + 2750 = 4557 (S) · 4266 + 1897 = 6163 (T) · 4720 + 3372 = 8092 (C)
- Clue 4 (Subtraction): "THE SNAPPED STRAP WAS A SKY BLUE COLOR"4014 - 2699 = 1315 (T) · 4390 - 294 = 4096 (N) · 11856 - 3251 = 8605 (P) · 7644 - 2333 = 5311 (U) · 10564 - 3337 = 7227 (E) · 4480 - 1216 = 3264 (B) · 7247 - 51 = 7196 (C) · 3392 - 331 = 3061 (Y) · 3432 - 2098 = 1334 (D) · 4985 - 3726 = 1259 (L) · 4836 - 401 = 4435 (W) · 6462 - 1281 = 5181 (A) · 12549 - 4099 = 8450 (R) · 7281 - 4275 = 3006 (S) · 4212 - 2219 = 1993 (K) · 5826 - 4368 = 1458 (O) · 8732 - 2564 = 6168 (H)
- Clue 5 (Division facts (1-12)): surviving statement (box 4) → Piper Prop84 ÷ 7 = 12 · 35 ÷ 7 = 5 · 22 ÷ 11 = 2 · 7 ÷ 1 = 7 · 6 ÷ 6 = 1 · 18 ÷ 2 = 9 · 12 ÷ 2 = 6 · 88 ÷ 8 = 11 · 80 ÷ 10 = 8 · 50 ÷ 5 = 10 · 27 ÷ 9 = 3
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Rounding, Word problems, Addition, Subtraction, Division
- Reading level
- grades 3-4
- Theme
- The Cloud Engine Caper — set in The floating islands of Skylands
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects