🏴☠️ Pirates, MinecraftGrade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Case of the Lost Obsidian Anchor
A rogue pirate captain has raided the docks of Crafty Cove! They stole the legendary Obsidian Anchor and sailed off into the blocky ocean. As a new recruit of the Square Fleet, you must follow the pixelated clues to find the thief.
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 | Minecraft Skill | Pirate Gear | Steering Hand | Hair Color | Weakness |
|---|---|---|---|---|---|
| Captain Spark | Fast Bridge Building | Parrot Companion | Left-handed swing | Sunken Gold Locks | Splash Water Potions |
| Ender Emma | TNT Cannon Blasting | Firework Rocket | Left-handed swing | Sunken Gold Locks | Splash Water Potions |
| Salty Sally | Ender Pearl Teleporting | Firework Rocket | Right-handed swing | Coal Black Braids | Glowing Pufferfish |
| Alex | Elytra Gliding | Parrot Companion | Left-handed swing | Coal Black Braids | Glowing Pufferfish |
| Patchy Pete | TNT Cannon Blasting | Spyglass | Right-handed swing | Sunken Gold Locks | Glowing Pufferfish |
| Scurvy Sid | Elytra Gliding | Firework Rocket | Left-handed swing | Sunken Gold Locks | Splash Water Potions |
| Barnaby Block | TNT Cannon Blasting | Firework Rocket | Right-handed swing | Bright Red Curls | Glowing Pufferfish |
| Jeb | Ender Pearl Teleporting | Firework Rocket | Left-handed swing | Bright Red Curls | Glowing Pufferfish |
| Captain Roger | Elytra Gliding | Enchanted Map | Left-handed swing | Sunken Gold Locks | Splash Water Potions |
| Crafty Carla | Ender Pearl Teleporting | Golden Apple | Left-handed swing | Sunken Gold Locks | Splash Water Potions |
| Captain Cobble | Ender Pearl Teleporting | Firework Rocket | Right-handed swing | Sunken Gold Locks | Splash Water Potions |
| Pegleg Pete | Elytra Gliding | Golden Apple | Left-handed swing | Bright Red Curls | Splash Water Potions |
| Captain Creep | Ender Pearl Teleporting | Spyglass | Right-handed swing | Sunken Gold Locks | Sparkling Milk Buckets |
| Scurvy Sam | Fast Bridge Building | Parrot Companion | Left-handed swing | Sunken Gold Locks | Glowing Pufferfish |
| Coral Chris | Fast Bridge Building | Parrot Companion | Right-handed swing | Bright Red Curls | Splash Water Potions |
| Jolly Roger | Ender Pearl Teleporting | Parrot Companion | Right-handed swing | Coal Black Braids | Splash Water Potions |
| Notch | Ender Pearl Teleporting | Enchanted Map | Left-handed swing | Sunken Gold Locks | Sparkling Milk Buckets |
| Scurvy Dan | Fast Bridge Building | Enchanted Map | Left-handed swing | Coal Black Braids | Glowing Pufferfish |
| Stampy | TNT Cannon Blasting | Firework Rocket | Left-handed swing | Bright Red Curls | Glowing Pufferfish |
| Steve | Fast Bridge Building | Firework Rocket | Left-handed swing | Coal Black Braids | Sparkling Milk Buckets |
| Salty Sean | TNT Cannon Blasting | Enchanted Map | Left-handed swing | Sunken Gold Locks | Sparkling Milk Buckets |
Clue 1
Rounding
Your blocky ship radar can only show rounded numbers. Round the distance to the pirate fleet to find 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
110
130
500
430
4300
430
700
500
2300
T
110
2900
370
500
430
20
370
T
110
130
1100
1700
500
1100
700
1100
2000
2000
370
T
110
Round 107 to the nearest tenT
Round 2,301 to the nearest hundredC
Round 4,296 to the nearest hundredU
Round 1,664 to the nearest hundredV
Round 1,082 to the nearest hundredA
Round 2,276 to the nearest thousandR
Round 536 to the nearest hundredE
Round 2,906 to the nearest hundredD
Round 24 to the nearest tenN
Round 366 to the nearest tenO
Round 427 to the nearest tenS
Round 130 to the nearest tenH
Round 677 to the nearest hundredP
0/13 letters found
Clue 2
Addition
You count the total iron blocks stolen from the ship dock. Add the piles together to reveal the next lead.
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
9275
6001
8487
6847
4530
4530
T
9275
4160
8201
9158
2200
T
9275
7736
3483
8487
2746
2200
6001
8487
2746
2719
9158
3483
2045
T
9275
4530
T
9275
6001
8487
3483
8487
6847
T
9275
6093 + 3182 =T
4437 + 3764 =R
1197 + 1003 =N
1136 + 1610 =A
1815 + 904 =V
1955 + 1528 =L
3123 + 6035 =I
627 + 1418 =Y
2040 + 2490 =O
2007 + 3994 =H
2907 + 4829 =S
3433 + 3414 =F
2090 + 2070 =P
3147 + 5340 =E
0/14 letters found
Clue 3
Subtraction
The villain used up some of your healing potions during the raid. Subtract the remaining potions to find where they went.
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
8736
5826
4362
3848
7082
8534
8534
4332
7082
5228
2509
4332
7419
5826
2838
5758
T
8736
5722
8311
7419
8100
8534
4332
7419
5826
2509
4332
T
8736
4362
5758
10897 - 2161 =T
7170 - 4661 =W
9000 - 466 =L
9281 - 3455 =H
7675 - 3343 =A
11565 - 3465 =P
7673 - 3311 =E
8022 - 2300 =B
4896 - 1048 =V
10641 - 2330 =Y
6005 - 3167 =U
11758 - 4339 =S
8999 - 3771 =N
10836 - 3754 =I
10032 - 4274 =R
0/15 letters found
Clue 4
Multiplication facts (1-12)
You find rows of suspicious crop farms planted on the secret island. Multiply the rows and columns to crack the code.
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
35
7
84
27
8
55
16
14
27
14
16
77
56
36
27
16
25
56
8
36
44
55
56
36
14
7 × 5 =G
7 × 12 =L
2 × 7 =R
5 × 11 =A
7 × 1 =O
3 × 9 =D
8 × 7 =T
4 × 4 =I
2 × 4 =H
3 × 12 =E
11 × 7 =F
5 × 5 =N
4 × 11 =W
0/13 letters found
Clue 5
Division facts (1-12) — the last clue
The pirate crew wants to split their emerald loot equally. Divide the gems to find the villain's final hideout.
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
18 ÷ 9 = ?
8 ÷ 8 = ?
10 ÷ 2 = ?
12 ÷ 1 = ?
64 ÷ 8 = ?
24 ÷ 8 = ?
49 ÷ 7 = ?
6 ÷ 1 = ?
110 ÷ 11 = ?
77 ÷ 7 = ?
108 ÷ 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain soars through the clouds on an elytra, then scribbling on an enchanted map.
2.The villain soars through the clouds on an elytra, then boosting away with a firework rocket.
3.The villain attacks with a sharp diamond sword, then munching on a rare golden apple.
4.The villain teleports with a shiny ender pearl, then munching on a rare golden apple.
5.The villain fires a massive TNT cannon, then boosting away with a firework rocket.
6.The villain attacks with a sharp diamond sword, then talking to a colorful parrot companion.
7.The villain teleports with a shiny ender pearl, then talking to a colorful parrot companion.
8.The villain bridges across the ocean blocks, then boosting away with a firework rocket.
9.The villain bridges across the ocean blocks, then peers through a heavy brass spyglass.
10.The villain teleports with a shiny ender pearl, then scribbling on an enchanted map.
11.The villain attacks with a sharp diamond sword, then boosting away with a firework rocket.
12.The villain fires a massive TNT cannon, then peers through a heavy brass spyglass.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Lost Obsidian Anchor
Culprit: Crafty Carla (Ender Pearl Teleporting · Golden Apple · Left-handed swing · Sunken Gold Locks · Splash Water Potions)
- Clue 1 (Rounding): "THE SUSPECT DOES NOT HAVE A PARROT"Round 107 to the nearest ten = 110 (T) · Round 2,301 to the nearest hundred = 2300 (C) · Round 4,296 to the nearest hundred = 4300 (U) · Round 1,664 to the nearest hundred = 1700 (V) · Round 1,082 to the nearest hundred = 1100 (A) · Round 2,276 to the nearest thousand = 2000 (R) · Round 536 to the nearest hundred = 500 (E) · Round 2,906 to the nearest hundred = 2900 (D) · Round 24 to the nearest ten = 20 (N) · Round 366 to the nearest ten = 370 (O) · Round 427 to the nearest ten = 430 (S) · Round 130 to the nearest ten = 130 (H) · Round 677 to the nearest hundred = 700 (P)
- Clue 2 (Addition): "THE FOOTPRINTS LEAN HEAVILY TO THE LEFT"6093 + 3182 = 9275 (T) · 4437 + 3764 = 8201 (R) · 1197 + 1003 = 2200 (N) · 1136 + 1610 = 2746 (A) · 1815 + 904 = 2719 (V) · 1955 + 1528 = 3483 (L) · 3123 + 6035 = 9158 (I) · 627 + 1418 = 2045 (Y) · 2040 + 2490 = 4530 (O) · 2007 + 3994 = 6001 (H) · 2907 + 4829 = 7736 (S) · 3433 + 3414 = 6847 (F) · 2090 + 2070 = 4160 (P) · 3147 + 5340 = 8487 (E)
- Clue 3 (Subtraction): "THE VILLAIN WAS HURT BY SPLASH WATER"10897 - 2161 = 8736 (T) · 7170 - 4661 = 2509 (W) · 9000 - 466 = 8534 (L) · 9281 - 3455 = 5826 (H) · 7675 - 3343 = 4332 (A) · 11565 - 3465 = 8100 (P) · 7673 - 3311 = 4362 (E) · 8022 - 2300 = 5722 (B) · 4896 - 1048 = 3848 (V) · 10641 - 2330 = 8311 (Y) · 6005 - 3167 = 2838 (U) · 11758 - 4339 = 7419 (S) · 8999 - 3771 = 5228 (N) · 10836 - 3754 = 7082 (I) · 10032 - 4274 = 5758 (R)
- Clue 4 (Multiplication facts (1-12)): "GOLD HAIR DRIFTED IN THE WATER"7 × 5 = 35 (G) · 7 × 12 = 84 (L) · 2 × 7 = 14 (R) · 5 × 11 = 55 (A) · 7 × 1 = 7 (O) · 3 × 9 = 27 (D) · 8 × 7 = 56 (T) · 4 × 4 = 16 (I) · 2 × 4 = 8 (H) · 3 × 12 = 36 (E) · 11 × 7 = 77 (F) · 5 × 5 = 25 (N) · 4 × 11 = 44 (W)
- Clue 5 (Division facts (1-12)): surviving statement (box 4) → Crafty Carla18 ÷ 9 = 2 · 8 ÷ 8 = 1 · 10 ÷ 2 = 5 · 12 ÷ 1 = 12 · 64 ÷ 8 = 8 · 24 ÷ 8 = 3 · 49 ÷ 7 = 7 · 6 ÷ 1 = 6 · 110 ÷ 11 = 10 · 77 ÷ 7 = 11 · 108 ÷ 12 = 9
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Case of the Lost Obsidian Anchor — set in The Blocky Bay
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects