Math Mysteries
Grade 3Reading: grades 5-6AdditionPlace valueSubtractionMultiplicationDivision

The Lost Relic of the Sky Temple

An ancient, glowing Sky Crystal has been stolen from the Mount Nimbus Museum! The legendary artifact keeps the floating islands from sinking into the stormy sea below. As the Junior Detective of the Cloud Patrol, you must examine the evidence, decode the flight logs, and stop the Rogue Aviator before the islands fall!

Suspects

Possible suspects

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

21 of 21 still in play
NameEscape GearSpecial ToolHandednessHeadwear WornKnown Fear
Captain SterlingSteam JetpackMagnetic BootsLeft-handed gripRed bandanaAfraid of heights
Professor PennyGrappling HookGlow CompassLeft-handed gripGoggles on foreheadAllergic to cloud-pollen
Jasper GaleRope LauncherWind WhistleRight-handed gripRed bandanaAllergic to cloud-pollen
Dr. VanceGrappling HookWind WhistleLeft-handed gripLeather aviator capAfraid of heights
Nadia DriftGrappling HookCloud LanternLeft-handed gripRed bandanaAfraid of heights
Tessa CycloneClimbing ClawsMagnetic BootsLeft-handed gripLeather aviator capAllergic to cloud-pollen
Iris JetstreamSteam JetpackSun PrismRight-handed gripLeather aviator capAllergic to cloud-pollen
Pilot PipRope LauncherSun PrismLeft-handed gripGoggles on foreheadAfraid of heights
Maeve ZephyrSteam JetpackWind WhistleLeft-handed gripRed bandanaScared of thunder
Sable WindrunnerClimbing ClawsGlow CompassRight-handed gripLeather aviator capScared of thunder
Sloane AerosGrappling HookSun PrismRight-handed gripGoggles on foreheadAllergic to cloud-pollen
Rusty StratusRope LauncherCloud LanternRight-handed gripRed bandanaAllergic to cloud-pollen
Silas PeakGlider WingsSun PrismLeft-handed gripLeather aviator capAfraid of heights
Buster BarnacleClimbing ClawsCloud LanternLeft-handed gripRed bandanaAllergic to cloud-pollen
Gemma FlintGlider WingsCloud LanternRight-handed gripGoggles on foreheadScared of thunder
Captain AmeliaClimbing ClawsGlow CompassRight-handed gripGoggles on foreheadAllergic to cloud-pollen
Finn NimbusClimbing ClawsWind WhistleRight-handed gripGoggles on foreheadScared of thunder
Barnaby FinchGlider WingsCloud LanternRight-handed gripGoggles on foreheadAllergic to cloud-pollen
Hazel SummitGlider WingsMagnetic BootsRight-handed gripGoggles on foreheadAllergic to cloud-pollen
Orion CloudGlider WingsWind WhistleLeft-handed gripGoggles on foreheadAllergic to cloud-pollen
Kira SkyeClimbing ClawsSun PrismRight-handed gripGoggles on foreheadAllergic to cloud-pollen
Clue 1

Addition

We searched the cargo hold of the sky-ship to count the stolen supplies. By adding up the crates of sky-biscuits and rope spools, we found a secret compartment with a coded message inside.

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
508
600
798
T
508
600
371
798
906
759
605
798
643
859
605
T
508
461
798
797
399
870
797
789
859
798
T
508
371
479
216
605
605
T
508
643
327 + 181 =T
396 + 474 =M
274 + 326 =H
151 + 65 =B
194 + 267 =W
486 + 373 =N
187 + 292 =C
403 + 503 =F
353 + 445 =E
405 + 238 =S
450 + 309 =D
389 + 400 =G
156 + 215 =I
260 + 345 =O
411 + 386 =A
250 + 149 =R
0/16 letters found
Clue 2

Place value

The navigation computer flickered, displaying the pirate's last known location. We had to break down the digits by their place value to read the secret grid coordinate.

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
7000
8000
3000
800
100
50
100
A
7000
600
90
5000
90
700
40
400
90
800
5000
9000
A
7000
700
900
600
50
100
5000
90
3000
A
7000
30
What is the value of the 7 in 47,955?A
What is the value of the 8 in 825?G
What is the value of the 3 in 53,020?I
What is the value of the 9 in 596?D
What is the value of the 4 in 436?U
What is the value of the 1 in 177?H
What is the value of the 9 in 89,304?W
What is the value of the 3 in 4,138?L
What is the value of the 5 in 950?T
What is the value of the 6 in 690?N
What is the value of the 9 in 928?O
What is the value of the 8 in 18,149?R
What is the value of the 4 in 246?M
What is the value of the 5 in 15,101?E
What is the value of the 7 in 3,795?S
0/15 letters found
Clue 3

Subtraction

The weight on our hot-air ballast was dropping fast. By subtracting the lost weight from our starting total, we figured out exactly where the thief threw their heavy gear overboard.

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
683
418
328
A
683
402
169
353
452
670
703
812
812
824
812
670
169
812
806
418
353
418
128
812
812
670
226
A
683
562
812
697 - 14 =A
1222 - 398 =Z
930 - 118 =E
376 - 248 =H
334 - 108 =C
830 - 160 =S
912 - 106 =D
718 - 390 =R
738 - 35 =N
522 - 353 =L
818 - 366 =F
580 - 162 =T
727 - 374 =O
854 - 292 =P
656 - 254 =I
0/15 letters found
Clue 4

Multiplication facts (1-12)

An ancient stone puzzle blocked our path in the temple. We multiplied the rows of solar tiles by the columns of moon tiles to unlock a hidden compartment holding our 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.

W
2
80
110
35
84
54
36
4
35
4
4
96
80
22
108
88
28
55
22
36
88
35
55
55
80
36
54
80
28
88
72
9
2 × 1 =W
9 × 1 =Y
5 × 7 =O
12 × 3 =D
1 × 4 =G
6 × 9 =N
12 × 7 =U
10 × 11 =F
9 × 8 =B
4 × 7 =A
8 × 11 =R
9 × 12 =T
11 × 2 =S
5 × 11 =P
12 × 8 =L
8 × 10 =E
0/16 letters found
Clue 5

Division facts (1-12) — the last clue

Our fuel reserves had to be split equally among our scout gliders. Dividing the total fuel units by the number of active ships revealed the maximum range of the villain's escape.

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
63 ÷ 7 = ?
90 ÷ 9 = ?
8 ÷ 2 = ?
60 ÷ 12 = ?
24 ÷ 8 = ?
12 ÷ 2 = ?
55 ÷ 5 = ?
108 ÷ 9 = ?
16 ÷ 8 = ?
1 ÷ 1 = ?
24 ÷ 3 = ?
Step 2 — cross out the sentence with each answer
1.The villain zipped across the gap using a rope launcher, then navigated the dark passage with a glow compass.
2.The villain blasted through the clouds with a steam jetpack, then navigated the dark passage with a glow compass.
3.The villain zipped across the gap using a rope launcher, then blinded the sentry using a shiny sun prism.
4.The villain soared silently down using glider wings, then vanished into the mist with a cloud lantern.
5.The villain zipped across the gap using a rope launcher, then walked upside down using magnetic boots.
6.The villain blasted through the clouds with a steam jetpack, then vanished into the mist with a cloud lantern.
7.The villain scaled the vertical cliff using climbing claws, then blinded the sentry using a shiny sun prism.
8.The villain scaled the vertical cliff using climbing claws, then vanished into the mist with a cloud lantern.
9.The villain swung across the canyon with a grappling hook, then blinded the sentry using a shiny sun prism.
10.The villain scaled the vertical cliff using climbing claws, then navigated the dark passage with a glow compass.
11.The villain zipped across the gap using a rope launcher, then vanished into the mist with a cloud lantern.
12.The villain blasted through the clouds with a steam jetpack, then blinded the sentry using a shiny sun prism.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 3 math
Math topics
Addition, Place value, Subtraction, Multiplication, Division
Reading level
grades 5-6
Theme
The Lost Relic of the Sky Temple — set in The floating islands of Mount Nimbus, high above the clouds.
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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