Grade 3Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Great Sky-Harbor Heist
The golden Wind-Compass has been stolen from the Chief Navigator! We must track down the Sky-Bandit who sneaked onto the flagship.
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 type | special gear | steering hand | goggles color | secret weakness |
|---|---|---|---|---|---|
| Jack | Storm Runner | gravity anchor | right-handed pilot | silver goggles | afraid of storms |
| Max | Wind Whisperer | gravity anchor | left-handed pilot | silver goggles | allergic to berries |
| Eli | Sky Galleon | lightning shield | right-handed pilot | gold goggles | afraid of storms |
| Leo | Wind Whisperer | vapor cloak | right-handed pilot | gold goggles | afraid of storms |
| Maya | Sky Galleon | wind booster | right-handed pilot | silver goggles | ticklish ears |
| Nora | Cloud Clipper | lightning shield | right-handed pilot | gold goggles | allergic to berries |
| Ava | Storm Runner | vapor cloak | right-handed pilot | gold goggles | afraid of storms |
| Ella | Cloud Clipper | solar sail | right-handed pilot | gold goggles | ticklish ears |
| Lily | Wind Whisperer | wind booster | right-handed pilot | silver goggles | allergic to berries |
| Mia | Sky Galleon | solar sail | left-handed pilot | gold goggles | afraid of storms |
| Grace | Gale Glider | lightning shield | right-handed pilot | bronze goggles | afraid of storms |
| Chloe | Sky Galleon | wind booster | right-handed pilot | bronze goggles | ticklish ears |
| Kai | Cloud Clipper | gravity anchor | right-handed pilot | bronze goggles | allergic to berries |
| Owen | Sky Galleon | wind booster | right-handed pilot | gold goggles | afraid of storms |
| Zack | Gale Glider | gravity anchor | right-handed pilot | gold goggles | allergic to berries |
| Sophie | Storm Runner | solar sail | right-handed pilot | gold goggles | ticklish ears |
| Toby | Wind Whisperer | lightning shield | right-handed pilot | bronze goggles | allergic to berries |
| Sam | Storm Runner | solar sail | right-handed pilot | gold goggles | afraid of storms |
| Hugo | Gale Glider | vapor cloak | left-handed pilot | silver goggles | allergic to berries |
| Ruby | Wind Whisperer | solar sail | left-handed pilot | bronze goggles | allergic to berries |
| Ben | Wind Whisperer | wind booster | left-handed pilot | gold goggles | allergic to berries |
Clue 1
Rounding
Our altimeter dial is cracked. To read our altitude, we must round the blurry numbers to the nearest ten to clear the display. This points us to the bandit's hidden 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
70
80
9000
60
8000
600
600
7000
8000
20
5000
2000
9000
3000
20
2000
T
70
90
3000
9000
7000
6000
8000
20
5000
200
2000
2000
3000
T
70
9000
4000
Round 67 to the nearest tenT
Round 3,974 to the nearest thousandR
Round 2,216 to the nearest thousandO
Round 8,990 to the nearest thousandE
Round 24 to the nearest tenN
Round 646 to the nearest hundredL
Round 3,143 to the nearest thousandS
Round 6,953 to the nearest thousandA
Round 6,151 to the nearest thousandW
Round 157 to the nearest hundredB
Round 57 to the nearest tenV
Round 81 to the nearest tenH
Round 4,600 to the nearest thousandD
Round 94 to the nearest tenU
Round 8,048 to the nearest thousandI
0/15 letters found
Clue 2
Addition
We search the cargo bay and count the extra energy cells. By adding up the crates of batteries, we find the cargo manifest page with the bandit's steering style.
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
539
242
237
618
433
899
899
201
433
944
433
331
201
282
433
815
242
T
539
242
201
944
903
237
903
390
433
899
971
T
539
201 + 338 =T
128 + 114 =H
327 + 644 =O
448 + 367 =G
79 + 122 =A
282 + 336 =V
126 + 111 =E
520 + 383 =D
185 + 248 =I
95 + 187 =R
511 + 388 =L
153 + 237 =P
382 + 562 =N
215 + 116 =S
0/14 letters found
Clue 3
Subtraction
To catch up, we must drop weight from our balloon. Subtracting the extra ballast sandbags shows us the bandit's secret fear.
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
162
762
210
205
496
396
396
833
496
590
261
580
590
450
512
261
673
781
450
T
162
673
261
781
450
558 - 396 =T
841 - 329 =F
825 - 44 =M
883 - 293 =N
282 - 21 =R
652 - 72 =U
746 - 73 =O
397 - 187 =E
555 - 105 =S
929 - 96 =A
914 - 152 =H
570 - 365 =V
711 - 315 =L
838 - 342 =I
0/14 letters found
Clue 4
Multiplication facts (1-12)
The hangar floor is lined with rows of toolboxes. Multiplying the rows by the boxes in each row gives us the key to find the goggles left behind.
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
45
36
25
10
9
16
120
99
81
22
16
8
18
10
55
120
18
10
18
18
55
36
99
9 × 5 =W
12 × 3 =E
9 × 2 =G
4 × 4 =N
11 × 5 =L
1 × 9 =U
11 × 2 =I
4 × 2 =Y
12 × 10 =D
9 × 11 =S
5 × 5 =F
1 × 10 =O
9 × 9 =H
0/13 letters found
Clue 5
Division facts (1-12) — the last clue
We must share our map pieces equally among the search teams. Dividing the maps helps us narrow down the final suspects on our list.
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
54 ÷ 6 = ?
7 ÷ 7 = ?
70 ÷ 10 = ?
9 ÷ 3 = ?
66 ÷ 6 = ?
10 ÷ 2 = ?
100 ÷ 10 = ?
44 ÷ 11 = ?
22 ÷ 11 = ?
60 ÷ 10 = ?
120 ÷ 10 = ?
Step 2 — cross out the sentence with each answer
1.The villain swings on a loose rope ladder, then drops a trail of sparkling dust.
2.The villain steers a fast airship, then escapes into the sunny sunset.
3.The villain zooms past the floating docks, then hides behind a mountain peak.
4.The villain swings on a loose rope ladder, then hides behind a mountain peak.
5.The villain swings on a loose rope ladder, then signals to a hidden crew.
6.The villain steers a fast airship, then signals to a hidden crew.
7.The villain glides through a fluffy cloud, then drops a trail of sparkling dust.
8.The villain swings on a loose rope ladder, then lands on a tiny secret island.
9.The villain climbs the tall crows nest, then hides behind a mountain peak.
10.The villain zooms past the floating docks, then lands on a tiny secret island.
11.The villain zooms past the floating docks, then drops a trail of sparkling dust.
12.The villain steers a fast airship, then drops a trail of sparkling dust.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Sky-Harbor Heist
Culprit: Sam (Storm Runner · solar sail · right-handed pilot · gold goggles · afraid of storms)
- Clue 1 (Rounding): "THE VILLAIN DOES NOT USE A WIND BOOSTER"Round 67 to the nearest ten = 70 (T) · Round 3,974 to the nearest thousand = 4000 (R) · Round 2,216 to the nearest thousand = 2000 (O) · Round 8,990 to the nearest thousand = 9000 (E) · Round 24 to the nearest ten = 20 (N) · Round 646 to the nearest hundred = 600 (L) · Round 3,143 to the nearest thousand = 3000 (S) · Round 6,953 to the nearest thousand = 7000 (A) · Round 6,151 to the nearest thousand = 6000 (W) · Round 157 to the nearest hundred = 200 (B) · Round 57 to the nearest ten = 60 (V) · Round 81 to the nearest ten = 80 (H) · Round 4,600 to the nearest thousand = 5000 (D) · Round 94 to the nearest ten = 90 (U) · Round 8,048 to the nearest thousand = 8000 (I)
- Clue 2 (Addition): "THE VILLAIN IS A RIGHT HANDED PILOT"201 + 338 = 539 (T) · 128 + 114 = 242 (H) · 327 + 644 = 971 (O) · 448 + 367 = 815 (G) · 79 + 122 = 201 (A) · 282 + 336 = 618 (V) · 126 + 111 = 237 (E) · 520 + 383 = 903 (D) · 185 + 248 = 433 (I) · 95 + 187 = 282 (R) · 511 + 388 = 899 (L) · 153 + 237 = 390 (P) · 382 + 562 = 944 (N) · 215 + 116 = 331 (S)
- Clue 3 (Subtraction): "THE VILLAIN RUNS FROM STORMS"558 - 396 = 162 (T) · 841 - 329 = 512 (F) · 825 - 44 = 781 (M) · 883 - 293 = 590 (N) · 282 - 21 = 261 (R) · 652 - 72 = 580 (U) · 746 - 73 = 673 (O) · 397 - 187 = 210 (E) · 555 - 105 = 450 (S) · 929 - 96 = 833 (A) · 914 - 152 = 762 (H) · 570 - 365 = 205 (V) · 711 - 315 = 396 (L) · 838 - 342 = 496 (I)
- Clue 4 (Multiplication facts (1-12)): "WE FOUND SHINY GOLD GOGGLES"9 × 5 = 45 (W) · 12 × 3 = 36 (E) · 9 × 2 = 18 (G) · 4 × 4 = 16 (N) · 11 × 5 = 55 (L) · 1 × 9 = 9 (U) · 11 × 2 = 22 (I) · 4 × 2 = 8 (Y) · 12 × 10 = 120 (D) · 9 × 11 = 99 (S) · 5 × 5 = 25 (F) · 1 × 10 = 10 (O) · 9 × 9 = 81 (H)
- Clue 5 (Division facts (1-12)): surviving statement (box 8) → Sam54 ÷ 6 = 9 · 7 ÷ 7 = 1 · 70 ÷ 10 = 7 · 9 ÷ 3 = 3 · 66 ÷ 6 = 11 · 10 ÷ 2 = 5 · 100 ÷ 10 = 10 · 44 ÷ 11 = 4 · 22 ÷ 11 = 2 · 60 ÷ 10 = 6 · 120 ÷ 10 = 12
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Great Sky-Harbor Heist — set in the floating islands of Laputa Sky-harbor
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects