Math Mysteries
Grade 4Reading: grades 5-6SubtractionAdditionPlace valueWord problemsDivision

The Sky Temple Heist

The golden Solar Compass has been stolen from the Sky Temple of Aeolus! A rogue sky-bandit snuck past the wind traps, deactivated the cloud barriers, and made off with the artifact. The High Council of Explorers needs your help to crack the codes, analyze the clues, and find the culprit among the visiting captains before they sail into the great storm.

Suspects

Possible suspects

Cross off a row as each clue rules it out. On screen, tap a row.

21 of 21 still in play
NameSignature ToolSky VehicleSteering GripHair StreakPhobia
VascoGrapple LauncherSolar SailerRight-Handed SteerSilver Hair StreakFear of Water
EdmundMagnetic BootsTurbo GyrocopterLeft-Handed SteerEmerald Hair StreakFear of Water
GertrudeSpyglass LaserCloud SkiffRight-Handed SteerEmerald Hair StreakFear of Water
JeanneAero GliderSteam ZeppelinLeft-Handed SteerEmerald Hair StreakFear of Spiders
IsabellaSonic WhistleCloud SkiffRight-Handed SteerEmerald Hair StreakFear of Spiders
KiraSonic WhistleSolar SailerLeft-Handed SteerSilver Hair StreakFear of Spiders
CharlesSonic WhistleSteam ZeppelinLeft-Handed SteerEmerald Hair StreakFear of Water
ZhengSpyglass LaserWind ScooterLeft-Handed SteerEmerald Hair StreakFear of Water
MaryMagnetic BootsTurbo GyrocopterLeft-Handed SteerEmerald Hair StreakFear of Heights
IbnGrapple LauncherSolar SailerLeft-Handed SteerEmerald Hair StreakFear of Water
MarcoMagnetic BootsWind ScooterRight-Handed SteerEmerald Hair StreakFear of Spiders
JunkoSonic WhistleSolar SailerLeft-Handed SteerEmerald Hair StreakFear of Spiders
FridtjofSpyglass LaserTurbo GyrocopterLeft-Handed SteerEmerald Hair StreakFear of Heights
NellieSonic WhistleWind ScooterRight-Handed SteerCrimson Hair StreakFear of Water
RanulphSonic WhistleWind ScooterRight-Handed SteerEmerald Hair StreakFear of Heights
RoaldSpyglass LaserCloud SkiffRight-Handed SteerSilver Hair StreakFear of Water
SacagaweaMagnetic BootsSolar SailerLeft-Handed SteerSilver Hair StreakFear of Spiders
LeoAero GliderWind ScooterRight-Handed SteerCrimson Hair StreakFear of Heights
FreyaGrapple LauncherCloud SkiffLeft-Handed SteerEmerald Hair StreakFear of Water
HarrietSonic WhistleCloud SkiffLeft-Handed SteerSilver Hair StreakFear of Spiders
JacquesSpyglass LaserWind ScooterLeft-Handed SteerSilver Hair StreakFear of Water
Clue 1

Subtraction

We compared the fuel reserves of the suspect vessels. By subtracting the remaining fuel from the starting amount, we can pinpoint which ship fled the fastest.

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
7568
7800
1178
4398
6449
1004
7385
4999
T
7568
7385
4524
1178
1886
1004
4524
T
7568
5290
3002
8375
6449
1886
4524
3002
6449
8459
1886
6449
4999
3002
1178
8459
12448 - 4880 =T
4543 - 19 =O
8727 - 268 =R
8420 - 45 =Y
7979 - 1530 =A
8083 - 2793 =F
5443 - 4265 =E
2978 - 1974 =N
6099 - 1100 =I
12291 - 4491 =H
6881 - 3879 =L
5359 - 961 =B
9722 - 2337 =D
5006 - 3120 =S
0/14 letters found
Clue 2

Addition

Our scout found discarded sky-coins along the escape route. Adding up the values of these coins reveals the weight of the pack the bandit carried.

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
2376
2914
6842
5848
6792
8426
T
2376
7106
6792
7333
5950
2914
6842
6842
7333
5950
8600
6501
7897
2110
7333
7333
6842
8950
T
2376
6792
T
2376
2914
6842
7333
6842
9149
T
2376
1466 + 910 =T
5089 + 2808 =P
4023 + 5126 =F
3919 + 2873 =O
3974 + 1874 =C
3936 + 5014 =D
3984 + 1966 =W
3587 + 3519 =R
1988 + 4513 =S
4406 + 2927 =L
1273 + 1641 =H
3546 + 4880 =N
3459 + 5141 =A
3729 + 3113 =E
878 + 1232 =U
0/15 letters found
Clue 3

Place value

The temple's lock has a digital display that reads coordinate values. To crack the locked door, we need to find the value of the digit in the hundreds place.

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
5000
70
7000
T
5000
70
30
7000
3000
80
700
40
700
300
700
8000
3000
80
100
2000
T
5000
70
7000
300
700
T
5000
7000
80
3000
700
10
10
What is the value of the 5 in 5,008?T
What is the value of the 2 in 52,354?M
What is the value of the 1 in 4,159?O
What is the value of the 8 in 380?R
What is the value of the 3 in 367?W
What is the value of the 1 in 9,418?L
What is the value of the 8 in 38,676?Y
What is the value of the 3 in 3,167?F
What is the value of the 7 in 975?H
What is the value of the 4 in 349?N
What is the value of the 7 in 2,728?A
What is the value of the 3 in 5,736?I
What is the value of the 7 in 17,252?E
0/13 letters found
Clue 4

Word problems

A helpful deckhand left a riddle about their supply crates. Solving these word problems will give us the key to the next navigation chart.

Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.

Astrandof
E
67
69
E
67
14
51
55
75
22
51
I
 
14
S
 
T
 
14
E
67
51
K
 
hairturnedupatthescene.
Navigator Toby found 35 spyglasses yesterday and 32 more today. How many spyglasses in all?E
Navigator Toby found 41 air-canisters yesterday and 28 more today. How many air-canisters in all?M
There were 82 climbing-ropes. 7 were used up. How many climbing-ropes are left?D
Navigator Toby lined up 2 rows of 11 spyglasses. How many spyglasses in all?H
There were 89 energy-crystals. 38 were used up. How many energy-crystals are left?A
Navigator Toby lined up 11 rows of 5 climbing-ropes. How many climbing-ropes in all?L
Navigator Toby lined up 7 rows of 2 energy-crystals. How many energy-crystals in all?R
0/7 letters found
Clue 5

Division facts (1-12) — the last clue

The rescue crew needs to divide their energy crystals equally among the rescue ships. Working out this division problem will power up our radar.

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
96 ÷ 8 = ?
15 ÷ 3 = ?
24 ÷ 4 = ?
6 ÷ 2 = ?
12 ÷ 3 = ?
27 ÷ 3 = ?
42 ÷ 6 = ?
16 ÷ 2 = ?
132 ÷ 12 = ?
2 ÷ 1 = ?
110 ÷ 11 = ?
Step 2 — cross out the sentence with each answer
1.The villain sprinted down the wind tunnel, then soared away toward the horizon.
2.The villain swung across the temple chasm, then soared away toward the horizon.
3.The villain scaled the outer cloud wall, then vanished behind a storm cloud.
4.The villain scaled the outer cloud wall, then escaped into the mist.
5.The villain stealthily bypassed the pressure plates, then escaped into the mist.
6.The villain scaled the outer cloud wall, then retreated to the secret dock.
7.The villain dashed through the ancient portal, then retreated to the secret dock.
8.The villain stealthily bypassed the pressure plates, then retreated to the secret dock.
9.The villain swung across the temple chasm, then hid among the floating peaks.
10.The villain dashed through the ancient portal, then soared away toward the horizon.
11.The villain dashed through the ancient portal, then vanished behind a storm cloud.
12.The villain swung across the temple chasm, then vanished behind a storm cloud.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 4 math
Math topics
Subtraction, Addition, Place value, Word problems, Division
Reading level
grades 5-6
Theme
The Sky Temple Heist — set in The floating islands of Skylandia, specifically the ancient Sky Temple of Aeolus
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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