Math Crackers
🚀 Space, MinecraftGrade 4Reading: grades 3-4RoundingMulti-step word problemsAdditionSubtractionDivision

The Cosmic Block Caper

A sneaky Space Bandit sneaked into Lunar Craft Outpost and swiped the main star core! Use your math skills to decode clues, eliminate innocent crew members, and catch the villain before they escape into deep space.

Suspects

Possible suspects

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

21 of 21 still in play
NamePrimary ToolSecondary ItemDominant HandSuit GearCounter Item
Mae JemisonPICKAXE BLASTERMAGMA DRILLLEFT HANDEDSILVER SPACESUITREDSTONE TORCH
Scott KellyGRAVITY BOOTSMAGMA DRILLRIGHT HANDEDSILVER SPACESUITWATER BUCKET
Peggy WhitsonPICKAXE BLASTERMAGMA DRILLLEFT HANDEDNEON GREEN HELMETSLIME BLOCK
Valentina TereshkovaPLASMA CHISELMAGMA DRILLRIGHT HANDEDGOLDEN VISORSLIME BLOCK
Helen SharmanPLASMA CHISELGLOWSTONE BEACONLEFT HANDEDNEON GREEN HELMETREDSTONE TORCH
Eileen CollinsJETPACK HARNESSOBSIDIAN SHIELDRIGHT HANDEDGOLDEN VISORSLIME BLOCK
Neil MoonPICKAXE BLASTERENDER PEARLRIGHT HANDEDNEON GREEN HELMETREDSTONE TORCH
Victor GloverPICKAXE BLASTERNETHERITE HELMETRIGHT HANDEDSILVER SPACESUITREDSTONE TORCH
Steve MinerJETPACK HARNESSMAGMA DRILLRIGHT HANDEDGOLDEN VISORWATER BUCKET
Alex CraftPICKAXE BLASTERNETHERITE HELMETRIGHT HANDEDNEON GREEN HELMETSLIME BLOCK
Sally RideREDSTONE LASERENDER PEARLRIGHT HANDEDSILVER SPACESUITREDSTONE TORCH
Alan ShepardPLASMA CHISELOBSIDIAN SHIELDRIGHT HANDEDSILVER SPACESUITREDSTONE TORCH
Leland MelvinJETPACK HARNESSMAGMA DRILLLEFT HANDEDSILVER SPACESUITSLIME BLOCK
Bernard HarrisREDSTONE LASERGLOWSTONE BEACONRIGHT HANDEDGOLDEN VISORWATER BUCKET
Sunita WilliamsREDSTONE LASERMAGMA DRILLRIGHT HANDEDNEON GREEN HELMETREDSTONE TORCH
Michael CollinsGRAVITY BOOTSOBSIDIAN SHIELDRIGHT HANDEDGOLDEN VISORREDSTONE TORCH
Jessica MeirPLASMA CHISELGLOWSTONE BEACONRIGHT HANDEDGOLDEN VISORSLIME BLOCK
Yuri OrbitPICKAXE BLASTERENDER PEARLRIGHT HANDEDSILVER SPACESUITREDSTONE TORCH
Guion BlufordPICKAXE BLASTERENDER PEARLLEFT HANDEDNEON GREEN HELMETWATER BUCKET
John GlennGRAVITY BOOTSNETHERITE HELMETRIGHT HANDEDGOLDEN VISORWATER BUCKET
Kalpana ChawlaREDSTONE LASERMAGMA DRILLRIGHT HANDEDSILVER SPACESUITREDSTONE TORCH
Clue 1

Rounding

Our station computer logged cargo totals across three space bays to narrow down the suspect list.

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
700
2000
170
50
90
110
110
20
90
1100
130
300
170
1700
1100
300
T
700
2000
20
50
170
300
70
1700
90
130
90
20
1100
1700
2000
90
170
110
130
Round 694 to the nearest hundredT
Round 1,685 to the nearest hundredS
Round 166 to the nearest tenE
Round 2,093 to the nearest thousandH
Round 47 to the nearest tenV
Round 1,144 to the nearest hundredN
Round 111 to the nearest tenL
Round 23 to the nearest tenA
Round 67 to the nearest tenB
Round 88 to the nearest tenI
Round 127 to the nearest tenD
Round 280 to the nearest hundredO
0/12 letters found
Clue 2

Multi-step word problems

The long-range radar display only shows rounded asteroid masses to save screen memory.

Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.

Awitnesssawthevillainwas
R
35
27
49
78
37
78
66
15
D
 
E
 
D
 
.
There were 100 space crystals in all. 2 Moon Miners used 15 space crystals each. The other 2 Moon Miners shared the rest equally. How many space crystals did each of the other Moon Miners get?R
Astronaut earned 2 redstone dust in each of 2 rounds, plus 24 bonus redstone dust. Then 13 redstone dust were lost. How many redstone dust are left?N
Astronaut collected 26 redstone dust in the morning and 106 redstone dust in the afternoon, then split them equally among 2 Moon Miners. How many redstone dust did each get?A
There were 101 iron ingots in all. 3 Moon Miners used 9 iron ingots each. The other 2 Moon Miners shared the rest equally. How many iron ingots did each of the other Moon Miners get?T
Astronaut earned 7 iron ingots in each of 3 rounds, plus 12 bonus iron ingots. Then 6 iron ingots were lost. How many iron ingots are left?I
Astronaut filled 7 boxes with 6 energy cells each, then found 36 more energy cells. How many energy cells are there in all?H
There were 311 moon rocks in all. 17 moon rocks were set aside. The rest were shared equally among 6 Moon Miners. How many moon rocks did each get?G
0/7 letters found
Clue 3

Addition

We added up the oxygen canister supplies from both lower decks to reveal the third 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.

A
5877
8844
7549
4973
7325
6179
3987
7041
4680
3987
7041
6419
6179
9559
3005
3987
6179
9559
4680
5399
7325
6419
5399
A
5877
4680
3987
7041
6179
7325
3987
9897
9559
6708
6708
3532 + 2345 =A
1430 + 3250 =R
2021 + 984 =N
1945 + 3028 =G
2083 + 3316 =C
2047 + 4372 =S
4986 + 2563 =I
3447 + 3878 =H
5377 + 4520 =M
2267 + 1720 =E
3615 + 2564 =T
6318 + 3241 =O
4017 + 4827 =L
4004 + 2704 =F
4664 + 2377 =D
0/15 letters found
Clue 4

Subtraction

We measured the drop in energy reserve levels before and after the power breach.

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

S
6643
5668
3828
5663
8819
4391
S
6643
2284
1986
4156
8819
S
6643
4790
5668
1830
1830
5310
4391
8819
1986
7418
S
6643
5707
8819
4391
8819
2158
3736
1830
5310
8819
3828
1986
1830
4156
5310
9761 - 3118 =S
5523 - 1367 =C
4507 - 679 =L
8648 - 3858 =U
5868 - 4038 =T
3789 - 1505 =P
7213 - 1550 =V
8820 - 1402 =D
8054 - 2386 =I
4806 - 1070 =N
7143 - 2752 =R
3281 - 1295 =A
8357 - 2650 =W
12983 - 4164 =E
5192 - 3034 =O
6569 - 1259 =H
0/16 letters found
Clue 5

Division facts (1-12) — the last clue

We divided the remaining battery cells equally among five escape pods to decode 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
10 ÷ 5 = ?
12 ÷ 3 = ?
108 ÷ 12 = ?
5 ÷ 5 = ?
15 ÷ 5 = ?
50 ÷ 5 = ?
40 ÷ 5 = ?
6 ÷ 1 = ?
60 ÷ 5 = ?
77 ÷ 7 = ?
21 ÷ 3 = ?
Step 2 — cross out the sentence with each answer
1.The villain carved a hole in the obsidian wall, then lit up the corridor with a beacon.
2.The villain sliced through heavy cables, then teleported away with a pearl.
3.The villain carved a hole in the obsidian wall, then deflected lasers with a shield.
4.The villain blasted through the blast doors, then teleported away with a pearl.
5.The villain sliced through heavy cables, then drilled through the floor.
6.The villain carved a hole in the obsidian wall, then donned a heavy protective helmet.
7.The villain blasted through the blast doors, then drilled through the floor.
8.The villain sliced through heavy cables, then lit up the corridor with a beacon.
9.The villain blasted through the blast doors, then donned a heavy protective helmet.
10.The villain hopped across low gravity bays, then donned a heavy protective helmet.
11.The villain hopped across low gravity bays, then drilled through the floor.
12.The villain sliced through heavy cables, then donned a heavy protective helmet.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 4 math
Math topics
Rounding, Multi-step word problems, Addition, Subtraction, Division
Reading level
grades 3-4
Theme
The Cosmic Block Caper — set in Lunar Craft Outpost
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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