⛏️ MinecraftGrade 5Reading: grades 5-6Fractions of a numberOrder of operationsMultiplicationRounding
The Case of the Obsidian Outpost
A mystery saboteur has compromised the defenses at the Crafting Citadel of Pixelia, smashing redstone wires and scattering valuable resources across the realm. The Grand Architect needs your math skills to decode clues and track down the Rogue Griefer before the fortress falls!
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 | Main Attack | Escape Move | Dominant Hand | Headgear | Counter Item |
|---|---|---|---|---|---|
| Alex Blockley | Redstone Blast | Speed Dash | Right Handed | Green Creeper Mask | Splash Water Potion |
| Ella Spawner | Lava Splash | Speed Dash | Right Handed | Green Creeper Mask | Splash Water Potion |
| Eli Cavern | Potion Splash | Shadow Cloak | Left Handed | Purple Ender Hood | Shield Block |
| Ethan Obsidian | TNT Drop | Speed Dash | Right Handed | Green Creeper Mask | Splash Water Potion |
| Caleb Dropper | Lava Splash | Ender Teleport | Left Handed | Green Creeper Mask | Shield Block |
| Mia Glade | Redstone Blast | Wall Climb | Left Handed | Green Creeper Mask | Shield Block |
| Ava Lapis | Anvil Crush | Wall Climb | Right Handed | Purple Ender Hood | Milk Bucket |
| Jax Ender | Anvil Crush | Elytra Glide | Left Handed | Purple Ender Hood | Splash Water Potion |
| Chloe Prism | Lava Splash | Shadow Cloak | Right Handed | Purple Ender Hood | Milk Bucket |
| Lucas Biome | Potion Splash | Wall Climb | Left Handed | Golden Diamond Helmet | Milk Bucket |
| Isaac Steppe | Lava Splash | Ender Teleport | Right Handed | Green Creeper Mask | Shield Block |
| Zoe Hopper | Anvil Crush | Shadow Cloak | Left Handed | Purple Ender Hood | Splash Water Potion |
| Steve Crafton | TNT Drop | Shadow Cloak | Right Handed | Green Creeper Mask | Splash Water Potion |
| Sam Pixel | Lava Splash | Ender Teleport | Right Handed | Purple Ender Hood | Splash Water Potion |
| Ruby Shulker | TNT Drop | Elytra Glide | Left Handed | Purple Ender Hood | Splash Water Potion |
| Harper Temple | Lava Splash | Speed Dash | Left Handed | Golden Diamond Helmet | Shield Block |
| Maya Redstone | Redstone Blast | Ender Teleport | Right Handed | Green Creeper Mask | Splash Water Potion |
| Zachary Notch | Redstone Blast | Ender Teleport | Right Handed | Purple Ender Hood | Milk Bucket |
| Nora Vault | TNT Drop | Elytra Glide | Left Handed | Green Creeper Mask | Splash Water Potion |
| Liam Fortress | Redstone Blast | Ender Teleport | Left Handed | Purple Ender Hood | Shield Block |
| Owen Quarry | TNT Drop | Elytra Glide | Right Handed | Golden Diamond Helmet | Shield Block |
Clue 1
Fractions of a number
You analyze the missing obsidian blocks from the main gate to calculate how many fractions were taken.
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
36
3
12
10
14
28
28
24
14
37
23
11
12
38
37
11
T
36
29
38
12
38
3
24
23
11
32
8
28
11
24
4
2/6 of 108 =T
1/8 of 24 =H
1/10 of 100 =V
2/5 of 95 =S
1/8 of 64 =C
2/8 of 116 =U
2/4 of 74 =N
2/5 of 10 =K
8/10 of 35 =L
1/4 of 128 =W
3/6 of 24 =E
1/4 of 44 =O
2/10 of 115 =D
1/4 of 56 =I
6/8 of 32 =A
0/15 letters found
Clue 2
Order of operations
You clear the redstone circuit puzzle by evaluating the correct step order on the command block.
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
48
16
35
23
65
18
18
74
65
39
22
41
65
39
66
22
74
75
65
12
27
74
46
35
41
65
T
48
16
17
65
66
16
T
48
16
74
39
49
8 × 9 - 24 =T
13 + 2 × 2 =R
4 × 12 - 13 =E
10 × 4 - 17 =V
11 × 2 - 6 =H
31 + 3 × 6 =D
6 × 9 - 15 =N
43 + 4 × 8 =P
3 + 3 × 3 =C
45 + 3 × 7 =G
10 + 6 × 6 =X
10 × 10 - 26 =A
6 × 5 - 3 =K
5 × 11 - 14 =W
6 × 6 - 18 =L
16 + 2 × 3 =S
50 + 3 × 5 =I
0/17 letters found
Clue 3
Multiplication facts (1-12)
You count the arrays of iron golems guarding the fortress walls in equal rows.
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
60
64
66
72
A
60
64
54
99
A
60
84
3
96
66
121
84
100
121
63
144
A
60
63
64
84
49
63
84
54
3
48
100
72
72
A
60
100
63
10 × 6 =A
8 × 12 =R
6 × 8 =V
11 × 9 =W
6 × 9 =H
12 × 6 =L
6 × 11 =P
7 × 9 =N
12 × 12 =C
7 × 12 =T
1 × 3 =E
8 × 8 =S
11 × 11 =O
7 × 7 =U
10 × 10 =I
0/15 letters found
Clue 4
Rounding
The craft bench scanner shows a total energy signal rounded to the nearest thousand.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
G
2900
1100
370
370
3700
70
1100
370
370
5000
370
1100
4300
130
700
1700
700
70
1100
130
5000
700
2300
370
1100
370
130
230
230
500
370
700
70
370
3700
370
Round 2,857 to the nearest hundredG
Round 2,310 to the nearest hundredW
Round 4,875 to the nearest thousandP
Round 4,309 to the nearest hundredM
Round 366 to the nearest tenE
Round 3,664 to the nearest hundredN
Round 721 to the nearest hundredS
Round 233 to the nearest tenT
Round 67 to the nearest tenC
Round 1,652 to the nearest hundredK
Round 499 to the nearest hundredH
Round 1,113 to the nearest hundredR
Round 130 to the nearest tenA
0/13 letters found
Clue 5
Fractions of a number — the last clue
You check the remaining potion bottles in the brew stand to find what fraction held the mystery ingredient.
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
2/10 of 35 = ?
1/3 of 9 = ?
6/8 of 8 = ?
2/6 of 36 = ?
2/8 of 8 = ?
3/6 of 22 = ?
1/10 of 10 = ?
1/5 of 45 = ?
5/10 of 20 = ?
1/4 of 20 = ?
5/10 of 8 = ?
Step 2 — cross out the sentence with each answer
1.The villain splashed hot lava, then teleported away.
2.The villain dropped lit tnt, then glided on elytra.
3.The villain dropped lit tnt, then dashed at high speed.
4.The villain threw a harmful potion, then dashed at high speed.
5.The villain fired a redstone blast, then glided on elytra.
6.The villain splashed hot lava, then dashed at high speed.
7.The villain fired a redstone blast, then teleported away.
8.The villain fired a redstone blast, then dashed at high speed.
9.The villain dropped lit tnt, then climbed up the fortress wall.
10.The villain splashed hot lava, then glided on elytra.
11.The villain splashed hot lava, then climbed up the fortress wall.
12.The villain dropped a heavy anvil, then vanished in shadows.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Obsidian Outpost
Culprit: Alex Blockley (Redstone Blast · Speed Dash · Right Handed · Green Creeper Mask · Splash Water Potion)
- Clue 1 (Fractions of a number): "THE VILLAIN DOES NOT USE SHADOW CLOAK"2/6 of 108 = 36 (T) · 1/8 of 24 = 3 (H) · 1/10 of 100 = 10 (V) · 2/5 of 95 = 38 (S) · 1/8 of 64 = 8 (C) · 2/8 of 116 = 29 (U) · 2/4 of 74 = 37 (N) · 2/5 of 10 = 4 (K) · 8/10 of 35 = 28 (L) · 1/4 of 128 = 32 (W) · 3/6 of 24 = 12 (E) · 1/4 of 44 = 11 (O) · 2/10 of 115 = 23 (D) · 1/4 of 56 = 14 (I) · 6/8 of 32 = 24 (A)
- Clue 2 (Order of operations): "THE VILLAIN SWINGS A PICKAXE WITH RIGHT HAND"8 × 9 - 24 = 48 (T) · 13 + 2 × 2 = 17 (R) · 4 × 12 - 13 = 35 (E) · 10 × 4 - 17 = 23 (V) · 11 × 2 - 6 = 16 (H) · 31 + 3 × 6 = 49 (D) · 6 × 9 - 15 = 39 (N) · 43 + 4 × 8 = 75 (P) · 3 + 3 × 3 = 12 (C) · 45 + 3 × 7 = 66 (G) · 10 + 6 × 6 = 46 (X) · 10 × 10 - 26 = 74 (A) · 6 × 5 - 3 = 27 (K) · 5 × 11 - 14 = 41 (W) · 6 × 6 - 18 = 18 (L) · 16 + 2 × 3 = 22 (S) · 50 + 3 × 5 = 65 (I)
- Clue 3 (Multiplication facts (1-12)): "A SPLASH WATER POTION CAN STUN THE VILLAIN"10 × 6 = 60 (A) · 8 × 12 = 96 (R) · 6 × 8 = 48 (V) · 11 × 9 = 99 (W) · 6 × 9 = 54 (H) · 12 × 6 = 72 (L) · 6 × 11 = 66 (P) · 7 × 9 = 63 (N) · 12 × 12 = 144 (C) · 7 × 12 = 84 (T) · 1 × 3 = 3 (E) · 8 × 8 = 64 (S) · 11 × 11 = 121 (O) · 7 × 7 = 49 (U) · 10 × 10 = 100 (I)
- Clue 4 (Rounding): "GREEN CREEPER MASK SCRAPS WERE AT THE SCENE"Round 2,857 to the nearest hundred = 2900 (G) · Round 2,310 to the nearest hundred = 2300 (W) · Round 4,875 to the nearest thousand = 5000 (P) · Round 4,309 to the nearest hundred = 4300 (M) · Round 366 to the nearest ten = 370 (E) · Round 3,664 to the nearest hundred = 3700 (N) · Round 721 to the nearest hundred = 700 (S) · Round 233 to the nearest ten = 230 (T) · Round 67 to the nearest ten = 70 (C) · Round 1,652 to the nearest hundred = 1700 (K) · Round 499 to the nearest hundred = 500 (H) · Round 1,113 to the nearest hundred = 1100 (R) · Round 130 to the nearest ten = 130 (A)
- Clue 5 (Fractions of a number): surviving statement (box 8) → Alex Blockley2/10 of 35 = 7 · 1/3 of 9 = 3 · 6/8 of 8 = 6 · 2/6 of 36 = 12 · 2/8 of 8 = 2 · 3/6 of 22 = 11 · 1/10 of 10 = 1 · 1/5 of 45 = 9 · 5/10 of 20 = 10 · 1/4 of 20 = 5 · 5/10 of 8 = 4
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Fractions of a number, Order of operations, Multiplication, Rounding
- Reading level
- grades 5-6
- Theme
- The Case of the Obsidian Outpost — set in The Crafting Citadel of Pixelia
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects