Math Mysteries
🔎 LabryinthGrade 4Reading: grades 3-4Fractions of a numberMultiplicationRoundingAddition

The Secrets of the Stone Maze

A sneaky Maze Goblin has stolen the Golden Compass from the Chief Cartographer! Now the stone paths are shifting and we are lost inside the walls. We must find the thief before the maze locks forever.

Suspects

Possible suspects

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

21 of 21 still in play
NameNavigation PowerCarried GearPath PreferenceHead Moss or HairSecret Distraction
PenelopeMelts in ShadowsGolden ChiselTurns RightFlame Red HairBlinded by Torchlight
HelenWalks Thru StoneBronze KeyTurns LeftSpiderweb Grey HairBlinded by Torchlight
NestorFinds Secret PathsBronze KeyTurns RightFlame Red HairBlinded by Torchlight
AriadneWalks Thru StoneBronze KeyTurns LeftMossy Green HairCalmed by Flute Music
OrionWalks Thru StoneWinged BootsTurns RightFlame Red HairCalmed by Flute Music
AchillesShifts WallsBronze KeyTurns LeftFlame Red HairBlinded by Torchlight
MedeaSprings TrapsGlowing LanternTurns RightFlame Red HairCalmed by Flute Music
CastorSprings TrapsGlowing LanternTurns RightSpiderweb Grey HairBlinded by Torchlight
DaedalusWalks Thru StoneSilver ThreadTurns RightFlame Red HairBlinded by Torchlight
IcarusShifts WallsBronze KeyTurns LeftFlame Red HairDistracted by Honey
PolluxShifts WallsWinged BootsTurns RightFlame Red HairBlinded by Torchlight
ParisSprings TrapsBronze KeyTurns LeftFlame Red HairDistracted by Honey
PerseusSprings TrapsWinged BootsTurns RightMossy Green HairDistracted by Honey
TelemachusSprings TrapsBronze KeyTurns RightFlame Red HairDistracted by Honey
JasonWalks Thru StoneGlowing LanternTurns LeftSpiderweb Grey HairDistracted by Honey
AjaxMelts in ShadowsGlowing LanternTurns RightSpiderweb Grey HairBlinded by Torchlight
OdysseusMelts in ShadowsGlowing LanternTurns LeftMossy Green HairDistracted by Honey
MinosShifts WallsBronze KeyTurns LeftMossy Green HairDistracted by Honey
AsteriusFinds Secret PathsSilver ThreadTurns RightFlame Red HairBlinded by Torchlight
HerculesWalks Thru StoneBronze KeyTurns RightFlame Red HairDistracted by Honey
TheseusWalks Thru StoneBronze KeyTurns RightMossy Green HairBlinded by Torchlight
Clue 1

Fractions of a number

We find ancient runes carved on the floor. Only a fraction of the tiles are glowing. If we find that exact amount, the runes will reveal the first 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
30
21
6
T
30
21
9
6
15
28
32
6
24
37
32
T
30
16
24
6
T
30
21
6
19
32
5
28
6
37
11
21
9
24
6
5
3/6 of 60 =T
7/8 of 24 =H
2/3 of 48 =O
1/3 of 15 =L
1/3 of 57 =G
2/8 of 96 =S
1/5 of 30 =E
2/6 of 84 =D
1/6 of 90 =F
2/6 of 111 =N
1/2 of 22 =C
1/5 of 45 =I
2/8 of 64 =U
0/13 letters found
Clue 2

Multiplication facts (1-12)

The path splits into identical rows of dusty stone jars. If we multiply the rows by the number of jars in each row, we can clear them away to find a 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
42
55
77
88
48
88
50
77
45
T
42
50
6
77
2
77
6
88
T
42
1
T
42
48
6
20
6
63
33
55
T
42
10
96
81
10
72
88
6 × 7 =T
7 × 9 =I
1 × 2 =F
12 × 4 =U
1 × 1 =O
8 × 12 =L
5 × 11 =H
9 × 9 =W
2 × 5 =A
7 × 11 =E
10 × 5 =P
11 × 8 =S
5 × 9 =C
3 × 11 =G
1 × 6 =R
2 × 10 =N
9 × 8 =Y
0/17 letters found
Clue 3

Rounding

A magic sundial measures the shifting shadows. The dial shows a long decimal number, but the door will only open if we round it to the nearest whole number.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

B
230
3700
20
3000
30
70
70
2300
3700
2900
30
110
20
3000
30
70
B
230
110
20
1300
900
7000
70
30
20
7000
70
30
20
9000
430
Round 229 to the nearest tenB
Round 3,671 to the nearest hundredR
Round 18 to the nearest tenI
Round 430 to the nearest tenF
Round 74 to the nearest tenT
Round 2,981 to the nearest thousandG
Round 927 to the nearest hundredD
Round 2,322 to the nearest hundredO
Round 6,996 to the nearest thousandS
Round 9,063 to the nearest thousandE
Round 2,892 to the nearest hundredC
Round 110 to the nearest tenL
Round 1,342 to the nearest hundredN
Round 32 to the nearest tenH
0/14 letters found
Clue 4

Addition

We find a pile of discarded climbing gear. Let us add the steel spikes and the iron hooks together to see how much gear the thief 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.

F
2298
7312
6197
4648
6719
4439
6719
9817
8735
6197
9487
4439
9461
7312
8276
8187
8567
9487
7593
3667
8735
6719
9817
6197
4439
8852
3458
8276
4439
7593
6719
4439
755 + 1543 =F
5546 + 3915 =G
3256 + 5020 =O
3201 + 1447 =M
3457 + 4730 =W
1093 + 2365 =C
4692 + 3875 =S
3065 + 1374 =R
4695 + 4040 =H
3062 + 4250 =L
3432 + 2765 =A
3287 + 3432 =E
5347 + 4470 =D
2301 + 1366 =T
5640 + 3847 =I
5425 + 3427 =K
5028 + 2565 =N
0/17 letters found
Clue 5

Fractions of a number — the last clue

A heavy stone chest sits in the corner. We must gather a specific fraction of the keys scattered on the floor to unlock it and read the final clue.

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
2/6 of 21 = ?
5/10 of 18 = ?
2/4 of 2 = ?
1/6 of 72 = ?
4/6 of 6 = ?
4/10 of 15 = ?
1/10 of 110 = ?
1/4 of 40 = ?
1/8 of 24 = ?
1/4 of 20 = ?
2/8 of 8 = ?
Step 2 — cross out the sentence with each answer
1.The villain steps straight through a solid brick wall, then unravels a spool of silver thread.
2.The villain steps straight through a solid brick wall, then carves a secret doorway with a golden chisel.
3.The villain fades into the dark shadows of the corridor, then flies over a pit using winged boots.
4.The villain triggers a trapdoor to block your path, then unlocks a heavy iron gate with a bronze key.
5.The villain fades into the dark shadows of the corridor, then carves a secret doorway with a golden chisel.
6.The villain slides a giant stone wall aside, then lights the way with a glowing lantern.
7.The villain finds a hidden shortcut through the thorns, then unlocks a heavy iron gate with a bronze key.
8.The villain slides a giant stone wall aside, then flies over a pit using winged boots.
9.The villain finds a hidden shortcut through the thorns, then unravels a spool of silver thread.
10.The villain triggers a trapdoor to block your path, then unravels a spool of silver thread.
11.The villain slides a giant stone wall aside, then unravels a spool of silver thread.
12.The villain steps straight through a solid brick wall, then unlocks a heavy iron gate with a bronze key.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 4 math
Math topics
Fractions of a number, Multiplication, Rounding, Addition
Reading level
grades 3-4
Theme
The Secrets of the Stone Maze — set in The Whispering Labyrinth
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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