Math Crackers
⛏️ MinecraftGrade 3Reading: grades 3-4MultiplicationRoundingAdditionSubtractionDivision

The Mystery of the Missing Diamond Block

Someone snuck into the master workshop and snatched the golden beacon! Use your decoder wheel and math clues to track down the culprit.

Suspects

Possible suspects

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

21 of 21 still in play
NameToolPotion EffectHandednessHelmet StyleFear
AphmauTridentInvisibilityLeft HandedTurtle ShellLava
RendogTridentLeapingLeft HandedIron HelmetWater
StampyNetherite PickaxeNight VisionRight HandedTurtle ShellWater
DanTridentInvisibilityLeft HandedTurtle ShellWater
PrestonEnchanted BowInvisibilityLeft HandedTurtle ShellWater
CaptainNetherite PickaxeNight VisionLeft HandedTurtle ShellWater
SWRDGolden AxeNight VisionLeft HandedLeather CapCreepers
ImpulseGolden AxeLeapingRight HandedTurtle ShellLava
AlexDiamond SwordSpeedLeft HandedLeather CapWater
GeminiEnchanted BowLeapingRight HandedTurtle ShellLava
MumboNetherite PickaxeFire ResistanceLeft HandedTurtle ShellWater
SteveEnchanted BowSpeedRight HandedLeather CapCreepers
UnspeakableNetherite PickaxeNight VisionRight HandedLeather CapWater
BdubsTridentLeapingRight HandedTurtle ShellCreepers
NotchEnchanted BowLeapingRight HandedTurtle ShellWater
EthoTridentLeapingRight HandedLeather CapCreepers
TangoGolden AxeLeapingLeft HandedIron HelmetWater
JebNetherite PickaxeLeapingLeft HandedTurtle ShellWater
DocmTridentLeapingRight HandedLeather CapWater
KeralisGolden AxeNight VisionRight HandedLeather CapLava
IskallNetherite PickaxeNight VisionRight HandedIron HelmetCreepers
Clue 1

Multiplication facts (1-12)

To decipher the craft room door code, you count the blocks placed 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.

T
49
144
30
1
84
3
3
14
84
35
96
45
30
8
35
45
T
49
42
8
30
64
84
88
30
88
30
8
84
8
T
49
14
35
66
30
7 × 7 =T
6 × 5 =E
7 × 6 =U
1 × 1 =V
1 × 8 =S
8 × 12 =D
8 × 8 =F
11 × 8 =R
3 × 1 =L
12 × 12 =H
12 × 7 =I
5 × 7 =N
9 × 5 =O
7 × 2 =A
6 × 11 =C
0/15 letters found
Clue 2

Rounding

The redstone monitor only displays coordinates rounded to the nearest ten.

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
400
6000
2000
50
60
T
400
7000
2000
500
500
500
200
50
200
8000
2000
9000
T
400
6000
200
7000
700
2000
700
80
5000
200
9000
T
400
2000
5000
Round 419 to the nearest hundredT
Round 2,416 to the nearest thousandE
Round 8,532 to the nearest thousandF
Round 5,624 to the nearest thousandH
Round 186 to the nearest hundredA
Round 7,174 to the nearest thousandN
Round 82 to the nearest tenC
Round 549 to the nearest hundredS
Round 53 to the nearest tenW
Round 56 to the nearest tenI
Round 686 to the nearest hundredD
Round 7,785 to the nearest thousandL
Round 5,274 to the nearest thousandR
0/13 letters found
Clue 3

Addition

You check the chest inventory by adding together all the gathered ores.

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
982
335
202
738
445
215
215
895
445
515
730
895
660
660
699
895
319
202
344
853
922
730
895
T
982
202
319
360 + 622 =T
104 + 98 =E
152 + 293 =I
227 + 511 =V
331 + 564 =A
479 + 251 =W
166 + 169 =H
453 + 246 =C
170 + 174 =D
315 + 345 =S
479 + 374 =O
505 + 417 =F
144 + 71 =L
193 + 126 =R
306 + 209 =N
0/15 letters found
Clue 4

Subtraction

You figure out how much redstone dust was used by taking away what is left.

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
645
729
284
771
729
553
431
745
614
431
553
553
745
828
771
A
645
796
237
A
645
745
745
796
540
729
729
431
351
1030 - 385 =A
901 - 105 =P
439 - 8 =E
489 - 252 =W
953 - 224 =T
494 - 210 =U
655 - 102 =L
699 - 348 =D
1159 - 331 =C
693 - 79 =H
928 - 183 =S
759 - 219 =O
897 - 126 =R
0/13 letters found
Clue 5

Division facts (1-12) — the last clue

To organize your inventory, you divide the iron ingots into equal stacks.

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
99 ÷ 11 = ?
88 ÷ 8 = ?
16 ÷ 2 = ?
77 ÷ 11 = ?
3 ÷ 3 = ?
48 ÷ 12 = ?
18 ÷ 9 = ?
9 ÷ 3 = ?
60 ÷ 5 = ?
42 ÷ 7 = ?
70 ÷ 7 = ?
Step 2 — cross out the sentence with each answer
1.The villain swung a diamond sword, then sipped speed potion.
2.The villain shot an enchanted bow, then guzzled night vision potion.
3.The villain chopped with a golden axe, then splashed leaping potion.
4.The villain chopped with a golden axe, then guzzled night vision potion.
5.The villain threw a trident, then drank invisibility potion.
6.The villain threw a trident, then sipped speed potion.
7.The villain threw a trident, then guzzled night vision potion.
8.The villain shot an enchanted bow, then drank invisibility potion.
9.The villain dug with a netherite pickaxe, then splashed leaping potion.
10.The villain shot an enchanted bow, then sipped speed potion.
11.The villain dug with a netherite pickaxe, then guzzled night vision potion.
12.The villain threw a trident, then brewed fire resistance potion.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 3 math
Math topics
Multiplication, Rounding, Addition, Subtraction, Division
Reading level
grades 3-4
Theme
The Mystery of the Missing Diamond Block — set in Blocky Ridge Outpost
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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