Grade 3Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Mystery of the Sky Port Compass
A sneaky Sky Bandit has stolen the Golden Compass from the Sky Port archives! We must find out who did it before they fly away into the clouds.
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 gear | escape trick | compass grip | hair color | scare tactic |
|---|---|---|---|---|---|
| Gale Force | wind glider | noisemaker | right handed grip | sunset orange hair | tickle feathers |
| Sally Ride | rocket boots | smoke bombs | right handed grip | storm grey hair | sneeze powder |
| Anne Bonny | rocket boots | flash powder | left handed grip | storm grey hair | banana peels |
| Roald Amundsen | magnetic gloves | flash powder | left handed grip | storm grey hair | sneeze powder |
| Jacques Cousteau | rocket boots | smoke bombs | left handed grip | sunset orange hair | banana peels |
| Blackbeard | grappling hook | smoke bombs | left handed grip | sunset orange hair | tickle feathers |
| Captain Kidd | magnetic gloves | smoke bombs | right handed grip | sunset orange hair | banana peels |
| Dusty Trail | steam jetpack | net launcher | right handed grip | sunset orange hair | tickle feathers |
| Sunny Skies | magnetic gloves | net launcher | right handed grip | cloud white hair | banana peels |
| Amelia Earhart | magnetic gloves | flash powder | left handed grip | cloud white hair | tickle feathers |
| Sir Francis | rocket boots | flash powder | right handed grip | cloud white hair | banana peels |
| Penny Pilot | grappling hook | noisemaker | right handed grip | sunset orange hair | banana peels |
| Mary Read | magnetic gloves | net launcher | right handed grip | sunset orange hair | banana peels |
| Dora Explorer | wind glider | bubble shield | left handed grip | storm grey hair | tickle feathers |
| Stormy Sam | magnetic gloves | bubble shield | right handed grip | sunset orange hair | banana peels |
| Leif Erikson | grappling hook | bubble shield | left handed grip | storm grey hair | tickle feathers |
| Steve Irwin | wind glider | net launcher | right handed grip | cloud white hair | sneeze powder |
| Buzz Aldrin | grappling hook | bubble shield | right handed grip | sunset orange hair | banana peels |
| Mae Jemison | rocket boots | smoke bombs | right handed grip | sunset orange hair | banana peels |
| Neil Armstrong | steam jetpack | flash powder | left handed grip | sunset orange hair | tickle feathers |
| Barnaby Blue | magnetic gloves | smoke bombs | right handed grip | cloud white hair | sneeze powder |
Clue 1
Rounding
Our airship radar is old and rusty. It only shows rounded numbers. We rounded the distance to the nearest ten miles to find the bandit's hideout!
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
80
7000
2000
5000
500
700
8000
400
T
80
8000
20
2000
50
700
20
T
80
70
50
2000
500
5000
70
5000
5000
200
2000
50
7000
400
2000
200
8000
Round 79 to the nearest tenT
Round 467 to the nearest hundredA
Round 47 to the nearest tenS
Round 1,903 to the nearest thousandE
Round 427 to the nearest hundredI
Round 66 to the nearest tenU
Round 22 to the nearest tenO
Round 4,720 to the nearest thousandB
Round 7,601 to the nearest thousandD
Round 236 to the nearest hundredL
Round 711 to the nearest hundredN
Round 6,665 to the nearest thousandH
0/12 letters found
Clue 2
Addition
Captain Barnaby counted the golden map pieces left behind. We added the small pile of shiny brass keys to the total to find the next 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.
T
743
848
682
480
936
566
682
805
848
642
379
805
929
785
793
307
848
T
743
848
929
700
651
682
651
307
785
793
375
456 + 287 =T
110 + 197 =G
200 + 179 =W
528 + 277 =S
410 + 232 =O
309 + 257 =U
267 + 581 =H
229 + 453 =E
364 + 565 =A
459 + 241 =N
186 + 189 =P
294 + 186 =C
528 + 257 =R
251 + 542 =I
389 + 262 =D
469 + 467 =L
0/16 letters found
Clue 3
Subtraction
The thief cut our anchor ropes! We subtracted the broken pieces of rope from our supply chest to see how much gear we lost.
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
780
573
362
231
179
764
764
573
506
232
494
573
297
635
466
506
179
232
410
764
825
466
297
635
466
635
466
635
764
573
573
231
362
830 - 50 =W
236 - 4 =T
619 - 125 =H
847 - 381 =N
302 - 123 =I
549 - 187 =S
722 - 87 =A
242 - 11 =L
1124 - 360 =P
780 - 207 =E
574 - 68 =D
468 - 58 =U
871 - 46 =O
636 - 339 =B
0/14 letters found
Clue 4
Multiplication facts (1-12)
We found rows of supply boxes stacked neat and tidy on the deck. We multiplied the rows of crates to count the total bandit gear.
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
56
45
63
15
33
54
5
54
6
120
60
60
63
90
T
56
11
3
6
11
63
T
56
144
33
120
6
25
63
45
120
54
33
88
63
45
54
6
50
8 × 7 =T
9 × 7 =E
5 × 3 =C
10 × 5 =D
1 × 3 =U
6 × 9 =I
6 × 1 =N
6 × 10 =L
5 × 9 =H
11 × 8 =B
1 × 11 =S
5 × 5 =G
10 × 12 =A
10 × 9 =F
1 × 5 =M
12 × 12 =O
11 × 3 =R
0/17 letters found
Clue 5
Division facts (1-12) — the last clue
To catch the thief, the crew shared the magic compass lenses. We shared them equally among all the scouts to cover every sky island.
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
10 ÷ 5 = ?
80 ÷ 10 = ?
66 ÷ 6 = ?
10 ÷ 1 = ?
36 ÷ 4 = ?
20 ÷ 5 = ?
15 ÷ 3 = ?
49 ÷ 7 = ?
96 ÷ 8 = ?
1 ÷ 1 = ?
42 ÷ 7 = ?
Step 2 — cross out the sentence with each answer
1.The villain blasted off with a steam jetpack, then protected themselves with a bubble shield.
2.The villain climbed up using magnetic gloves, then trapped the purser in a net launcher.
3.The villain swung in on a grappling hook, then distracted everyone with a noisemaker.
4.The villain blasted off with a steam jetpack, then trapped the purser in a net launcher.
5.The villain swung in on a grappling hook, then protected themselves with a bubble shield.
6.The villain swung in on a grappling hook, then trapped the purser in a net launcher.
7.The villain blasted off with a steam jetpack, then distracted everyone with a noisemaker.
8.The villain climbed up using magnetic gloves, then dropped sneaky smoke bombs.
9.The villain swooped down using a wind glider, then distracted everyone with a noisemaker.
10.The villain swooped down using a wind glider, then protected themselves with a bubble shield.
11.The villain zoomed past on rocket boots, then dropped sneaky smoke bombs.
12.The villain zoomed past on rocket boots, then protected themselves with a bubble shield.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Sky Port Compass
Culprit: Penny Pilot (grappling hook · noisemaker · right handed grip · sunset orange hair · banana peels)
- Clue 1 (Rounding): "THE BANDIT DOES NOT USE A BUBBLE SHIELD"Round 79 to the nearest ten = 80 (T) · Round 467 to the nearest hundred = 500 (A) · Round 47 to the nearest ten = 50 (S) · Round 1,903 to the nearest thousand = 2000 (E) · Round 427 to the nearest hundred = 400 (I) · Round 66 to the nearest ten = 70 (U) · Round 22 to the nearest ten = 20 (O) · Round 4,720 to the nearest thousand = 5000 (B) · Round 7,601 to the nearest thousand = 8000 (D) · Round 236 to the nearest hundred = 200 (L) · Round 711 to the nearest hundred = 700 (N) · Round 6,665 to the nearest thousand = 7000 (H)
- Clue 2 (Addition): "THE CLUE SHOWS A RIGHT HANDED GRIP"456 + 287 = 743 (T) · 110 + 197 = 307 (G) · 200 + 179 = 379 (W) · 528 + 277 = 805 (S) · 410 + 232 = 642 (O) · 309 + 257 = 566 (U) · 267 + 581 = 848 (H) · 229 + 453 = 682 (E) · 364 + 565 = 929 (A) · 459 + 241 = 700 (N) · 186 + 189 = 375 (P) · 294 + 186 = 480 (C) · 528 + 257 = 785 (R) · 251 + 542 = 793 (I) · 389 + 262 = 651 (D) · 469 + 467 = 936 (L)
- Clue 3 (Subtraction): "WE SLIPPED THE BANDIT UP ON BANANA PEELS"830 - 50 = 780 (W) · 236 - 4 = 232 (T) · 619 - 125 = 494 (H) · 847 - 381 = 466 (N) · 302 - 123 = 179 (I) · 549 - 187 = 362 (S) · 722 - 87 = 635 (A) · 242 - 11 = 231 (L) · 1124 - 360 = 764 (P) · 780 - 207 = 573 (E) · 574 - 68 = 506 (D) · 468 - 58 = 410 (U) · 871 - 46 = 825 (O) · 636 - 339 = 297 (B)
- Clue 4 (Multiplication facts (1-12)): "THE CRIMINAL LEFT SUNSET ORANGE HAIR BEHIND"8 × 7 = 56 (T) · 9 × 7 = 63 (E) · 5 × 3 = 15 (C) · 10 × 5 = 50 (D) · 1 × 3 = 3 (U) · 6 × 9 = 54 (I) · 6 × 1 = 6 (N) · 6 × 10 = 60 (L) · 5 × 9 = 45 (H) · 11 × 8 = 88 (B) · 1 × 11 = 11 (S) · 5 × 5 = 25 (G) · 10 × 12 = 120 (A) · 10 × 9 = 90 (F) · 1 × 5 = 5 (M) · 12 × 12 = 144 (O) · 11 × 3 = 33 (R)
- Clue 5 (Division facts (1-12)): surviving statement (box 3) → Penny Pilot10 ÷ 5 = 2 · 80 ÷ 10 = 8 · 66 ÷ 6 = 11 · 10 ÷ 1 = 10 · 36 ÷ 4 = 9 · 20 ÷ 5 = 4 · 15 ÷ 3 = 5 · 49 ÷ 7 = 7 · 96 ÷ 8 = 12 · 1 ÷ 1 = 1 · 42 ÷ 7 = 6
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Mystery of the Sky Port Compass — set in Floating Isles of Skyland
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects