Grade 3Reading: grades 1-2Place valueAdditionSubtractionRoundingDivision
The Cloud Harbor Mystery
The Great Sky Pearl has been snatched from the floating Sky Harbor! Captain Pip needs the help of the brave Cloud Patrol to track down the sneaky sky pirate. We must search the clouds, solve the math puzzles, and save the day!
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 | Airship Pilot Skill | Favorite Gadget | Eye Wear | Hair Color | Silly Weakness |
|---|---|---|---|---|---|
| Gale Gail | Star Navigator | Spark Sparkler | Black Eyepatch | Sun Yellow Hair | Scared of tickly feathers |
| Breezy Bella | Cloud Drifter | Bubble Blaster | Shiny Goggles | Neon Pink Hair | Sneezes near birds |
| First Mate Molly | Gale Rider | Bubble Blaster | Shiny Goggles | Neon Pink Hair | Scared of tickly feathers |
| Captain Claw | Cloud Drifter | Turbo Booster | Black Eyepatch | Neon Pink Hair | Afraid of heights |
| Patches McGee | Cloud Drifter | Turbo Booster | Black Eyepatch | Sun Yellow Hair | Scared of tickly feathers |
| Zippy Zack | Storm Chaser | Grappling Hook | Shiny Goggles | Sun Yellow Hair | Scared of tickly feathers |
| Jolly Roger | Wind Whisperer | Grappling Hook | Black Eyepatch | Sun Yellow Hair | Afraid of heights |
| Windy Wendy | Star Navigator | Spark Sparkler | Black Eyepatch | Bright Blue Hair | Afraid of heights |
| Salty Sue | Wind Whisperer | Bubble Blaster | Black Eyepatch | Bright Blue Hair | Scared of tickly feathers |
| Sky Sailor Sam | Gale Rider | Net Launcher | Shiny Goggles | Bright Blue Hair | Afraid of heights |
| Penny Plunder | Gale Rider | Turbo Booster | Black Eyepatch | Bright Blue Hair | Afraid of heights |
| Stormy Stan | Star Navigator | Bubble Blaster | Black Eyepatch | Bright Blue Hair | Afraid of heights |
| Captain Pip | Wind Whisperer | Spark Sparkler | Black Eyepatch | Bright Blue Hair | Afraid of heights |
| Peggy Plume | Cloud Drifter | Spark Sparkler | Black Eyepatch | Sun Yellow Hair | Sneezes near birds |
| Peggy Pegleg | Cloud Drifter | Net Launcher | Shiny Goggles | Bright Blue Hair | Afraid of heights |
| Rusty Rudder | Storm Chaser | Net Launcher | Shiny Goggles | Bright Blue Hair | Afraid of heights |
| Breezy Bob | Storm Chaser | Net Launcher | Shiny Goggles | Sun Yellow Hair | Sneezes near birds |
| Barnaby Barnacle | Star Navigator | Grappling Hook | Black Eyepatch | Bright Blue Hair | Afraid of heights |
| Skipper Skip | Gale Rider | Turbo Booster | Black Eyepatch | Sun Yellow Hair | Afraid of heights |
| Scurvy Steve | Wind Whisperer | Bubble Blaster | Shiny Goggles | Sun Yellow Hair | Sneezes near birds |
| Captain Coco | Wind Whisperer | Grappling Hook | Black Eyepatch | Bright Blue Hair | Scared of tickly feathers |
Clue 1
Place value
We check the airship dashboard. The digital dials are broken. We must look at the place value of the digits to read the map.
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
900
30
600
80
10
100
100
4000
10
200
7000
70
600
300
200
70
T
900
2000
300
600
T
900
30
600
T
900
2000
3000
400
70
400
70
70
300
T
900
600
3000
What is the value of the 9 in 973?T
What is the value of the 3 in 437?H
What is the value of the 2 in 6,269?N
What is the value of the 4 in 94,261?A
What is the value of the 7 in 47,893?D
What is the value of the 3 in 3,276?R
What is the value of the 6 in 677?E
What is the value of the 8 in 9,181?V
What is the value of the 1 in 818?I
What is the value of the 3 in 371?S
What is the value of the 1 in 2,159?L
What is the value of the 2 in 92,447?U
What is the value of the 7 in 4,873?O
What is the value of the 4 in 403?B
0/14 letters found
Clue 2
Addition
Barnaby the Parrot helps us count the shiny coins. We must add the two shiny piles together to find 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
638
853
204
524
337
587
853
T
638
337
426
587
524
524
853
516
989
826
829
464
826
900
738
204
344
204
266
826
T
638
900
853
397 + 241 =T
230 + 107 =I
346 + 170 =O
587 + 402 =W
191 + 153 =Y
463 + 275 =K
356 + 497 =H
443 + 386 =B
470 + 430 =C
180 + 246 =N
197 + 327 =S
318 + 146 =L
474 + 352 =A
79 + 187 =P
178 + 409 =G
64 + 140 =E
0/16 letters found
Clue 3
Subtraction
Some rope ladders are missing from the deck. We must subtract the remaining ropes to see how many the thief 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
517
518
213
436
716
325
213
603
213
325
436
716
737
325
716
800
712
467
737
518
800
313
518
525
692
716
150
213
602
645 - 128 =T
882 - 280 =S
817 - 101 =A
660 - 135 =P
937 - 225 =D
1021 - 284 =F
523 - 5 =H
182 - 32 =C
665 - 340 =R
501 - 65 =Y
941 - 249 =L
493 - 180 =G
1000 - 200 =I
321 - 108 =E
670 - 67 =V
647 - 180 =O
0/16 letters found
Clue 4
Rounding
The stormy wind makes the telescope shake. We cannot see the exact number of miles. We must round 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.
A
80
500
400
7000
A
80
900
200
8000
800
40
7000
9000
2000
60
400
40
3000
90
5000
60
A
80
9000
7000
300
A
80
500
3000
5000
800
400
Round 77 to the nearest tenA
Round 349 to the nearest hundredW
Round 6,645 to the nearest thousandR
Round 59 to the nearest tenH
Round 8,269 to the nearest thousandO
Round 9,051 to the nearest thousandI
Round 174 to the nearest hundredD
Round 3,314 to the nearest thousandL
Round 86 to the nearest tenU
Round 44 to the nearest tenB
Round 839 to the nearest hundredF
Round 4,589 to the nearest thousandE
Round 2,071 to the nearest thousandG
Round 510 to the nearest hundredS
Round 416 to the nearest hundredT
Round 901 to the nearest hundredN
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
The crew needs to share the sky maps equally. We must divide the maps into even piles so everyone has one.
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
8 ÷ 8 = ?
28 ÷ 4 = ?
36 ÷ 6 = ?
20 ÷ 10 = ?
99 ÷ 9 = ?
60 ÷ 12 = ?
16 ÷ 2 = ?
36 ÷ 9 = ?
60 ÷ 5 = ?
90 ÷ 9 = ?
108 ÷ 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain flew the steam rocket, then left a small toy compass.
2.The villain sailed the cloud boat, then dropped shiny gold coins.
3.The villain flew the steam rocket, then dropped shiny gold coins.
4.The villain guided the wood glider, then left a small toy compass.
5.The villain guided the wood glider, then lost a wooden spyglass.
6.The villain spun the airship wheel, then left a small toy compass.
7.The villain flew the steam rocket, then dropped some rope ladders.
8.The villain sailed the cloud boat, then left a small toy compass.
9.The villain spun the airship wheel, then lost a wooden spyglass.
10.The villain sailed the cloud boat, then dropped some rope ladders.
11.The villain guided the wood glider, then dropped some rope ladders.
12.The villain guided the wood glider, then dropped shiny gold coins.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Cloud Harbor Mystery
Culprit: Barnaby Barnacle (Star Navigator · Grappling Hook · Black Eyepatch · Bright Blue Hair · Afraid of heights)
- Clue 1 (Place value): "THE VILLAIN DOES NOT USE THE TURBO BOOSTER"What is the value of the 9 in 973? = 900 (T) · What is the value of the 3 in 437? = 30 (H) · What is the value of the 2 in 6,269? = 200 (N) · What is the value of the 4 in 94,261? = 4000 (A) · What is the value of the 7 in 47,893? = 7000 (D) · What is the value of the 3 in 3,276? = 3000 (R) · What is the value of the 6 in 677? = 600 (E) · What is the value of the 8 in 9,181? = 80 (V) · What is the value of the 1 in 818? = 10 (I) · What is the value of the 3 in 371? = 300 (S) · What is the value of the 1 in 2,159? = 100 (L) · What is the value of the 2 in 92,447? = 2000 (U) · What is the value of the 7 in 4,873? = 70 (O) · What is the value of the 4 in 403? = 400 (B)
- Clue 2 (Addition): "THE SIGHTINGS SHOW A BLACK EYEPATCH"397 + 241 = 638 (T) · 230 + 107 = 337 (I) · 346 + 170 = 516 (O) · 587 + 402 = 989 (W) · 191 + 153 = 344 (Y) · 463 + 275 = 738 (K) · 356 + 497 = 853 (H) · 443 + 386 = 829 (B) · 470 + 430 = 900 (C) · 180 + 246 = 426 (N) · 197 + 327 = 524 (S) · 318 + 146 = 464 (L) · 474 + 352 = 826 (A) · 79 + 187 = 266 (P) · 178 + 409 = 587 (G) · 64 + 140 = 204 (E)
- Clue 3 (Subtraction): "THEY ARE VERY AFRAID OF HIGH PLACES"645 - 128 = 517 (T) · 882 - 280 = 602 (S) · 817 - 101 = 716 (A) · 660 - 135 = 525 (P) · 937 - 225 = 712 (D) · 1021 - 284 = 737 (F) · 523 - 5 = 518 (H) · 182 - 32 = 150 (C) · 665 - 340 = 325 (R) · 501 - 65 = 436 (Y) · 941 - 249 = 692 (L) · 493 - 180 = 313 (G) · 1000 - 200 = 800 (I) · 321 - 108 = 213 (E) · 670 - 67 = 603 (V) · 647 - 180 = 467 (O)
- Clue 4 (Rounding): "A STRAND OF BRIGHT BLUE HAIR WAS LEFT"Round 77 to the nearest ten = 80 (A) · Round 349 to the nearest hundred = 300 (W) · Round 6,645 to the nearest thousand = 7000 (R) · Round 59 to the nearest ten = 60 (H) · Round 8,269 to the nearest thousand = 8000 (O) · Round 9,051 to the nearest thousand = 9000 (I) · Round 174 to the nearest hundred = 200 (D) · Round 3,314 to the nearest thousand = 3000 (L) · Round 86 to the nearest ten = 90 (U) · Round 44 to the nearest ten = 40 (B) · Round 839 to the nearest hundred = 800 (F) · Round 4,589 to the nearest thousand = 5000 (E) · Round 2,071 to the nearest thousand = 2000 (G) · Round 510 to the nearest hundred = 500 (S) · Round 416 to the nearest hundred = 400 (T) · Round 901 to the nearest hundred = 900 (N)
- Clue 5 (Division facts (1-12)): surviving statement (box 3) → Barnaby Barnacle8 ÷ 8 = 1 · 28 ÷ 4 = 7 · 36 ÷ 6 = 6 · 20 ÷ 10 = 2 · 99 ÷ 9 = 11 · 60 ÷ 12 = 5 · 16 ÷ 2 = 8 · 36 ÷ 9 = 4 · 60 ÷ 5 = 12 · 90 ÷ 9 = 10 · 108 ÷ 12 = 9
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Place value, Addition, Subtraction, Rounding, Division
- Reading level
- grades 1-2
- Theme
- The Cloud Harbor Mystery — set in Sky Harbor
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects