🚀 SpaceGrade 5Reading: grades 3-4Place valueAdditionSubtractionMultiplicationDivision
The Case of the Missing Moon-Rocks
Oh no! A mysterious rogue has broken into Lunar Base Alpha and swiped the priceless glowing moon-rocks! The Chief Geologist needs your help. Decode the math clues left behind on the terminal screens to track down the sneaky culprit before they rocket away!
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 | Spacesuit Class | Gadget Tool | Helmet Visor | Zero-G Haircut | System Vulnerability |
|---|---|---|---|---|---|
| Jack Swigert | Solar Jetpack | Magnetic Claw | Silver Tinted Visor | Neon Blue Mohawky | Water Squirter |
| Guion Bluford | Solar Jetpack | Cosmic Net Launcher | Silver Tinted Visor | Spiky Silver Buzz | Flashlight Beam |
| Michael Collins | Solar Jetpack | Hologram Projector | Gold Tinted Visor | Spiky Silver Buzz | Strong Magnet |
| Gene Cernan | Radar Scanner | Tractor Beam Wand | Gold Tinted Visor | Curly Purple Puff | Strong Magnet |
| Kalpana Chawla | Plasma Shield | Tractor Beam Wand | Silver Tinted Visor | Curly Purple Puff | Water Squirter |
| Mae Jemison | Plasma Shield | Magnetic Claw | Silver Tinted Visor | Neon Blue Mohawky | Strong Magnet |
| Peggy Whitson | Plasma Shield | Hologram Projector | Silver Tinted Visor | Spiky Silver Buzz | Flashlight Beam |
| Chris Hadfield | Gravity Boots | Cosmic Net Launcher | Silver Tinted Visor | Spiky Silver Buzz | Strong Magnet |
| Alan Shepard | Radar Scanner | Tractor Beam Wand | Silver Tinted Visor | Neon Blue Mohawky | Flashlight Beam |
| Pete Conrad | Laser Welder | Hologram Projector | Gold Tinted Visor | Neon Blue Mohawky | Flashlight Beam |
| Sunita Williams | Plasma Shield | Tractor Beam Wand | Silver Tinted Visor | Spiky Silver Buzz | Flashlight Beam |
| John Glenn | Gravity Boots | Magnetic Claw | Silver Tinted Visor | Curly Purple Puff | Strong Magnet |
| Sally Ride | Radar Scanner | Hologram Projector | Gold Tinted Visor | Spiky Silver Buzz | Flashlight Beam |
| Buzz Aldrin | Gravity Boots | Tractor Beam Wand | Gold Tinted Visor | Neon Blue Mohawky | Strong Magnet |
| Scott Kelly | Plasma Shield | Cosmic Net Launcher | Gold Tinted Visor | Neon Blue Mohawky | Flashlight Beam |
| Mark Kelly | Laser Welder | Hologram Projector | Silver Tinted Visor | Spiky Silver Buzz | Water Squirter |
| Jim Lovell | Laser Welder | Tractor Beam Wand | Silver Tinted Visor | Spiky Silver Buzz | Flashlight Beam |
| Valentina Tereshkova | Gravity Boots | Sonic Screwdriver | Gold Tinted Visor | Curly Purple Puff | Strong Magnet |
| Tim Peake | Laser Welder | Sonic Screwdriver | Silver Tinted Visor | Spiky Silver Buzz | Flashlight Beam |
| Leland Melvin | Gravity Boots | Hologram Projector | Gold Tinted Visor | Spiky Silver Buzz | Water Squirter |
| Neil Armstrong | Solar Jetpack | Magnetic Claw | Silver Tinted Visor | Spiky Silver Buzz | Strong Magnet |
Clue 1
Place value
To boot up the security screen, you need to find the digit in the hundreds place on the navigation computer.
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
3000
60
40
500
20
700
700
5000
20
9000
90
400
40
200
9000
400
T
3000
4000
200
40
T
3000
60
40
9000
40
T
3000
700
5000
4000
9000
1000
60
40
10
What is the value of the 3 in 63,866?T
What is the value of the 4 in 10,646?E
What is the value of the 4 in 15,496?O
What is the value of the 2 in 84,923?I
What is the value of the 1 in 304,417?R
What is the value of the 2 in 87,266?S
What is the value of the 4 in 914,853?U
What is the value of the 9 in 779,046?N
What is the value of the 6 in 58,065?H
What is the value of the 9 in 432,492?D
What is the value of the 7 in 44,786?L
What is the value of the 5 in 45,260?A
What is the value of the 5 in 849,573?V
What is the value of the 1 in 341,026?C
0/14 letters found
Clue 2
Addition
We need to know the total weight of the empty oxygen canisters left behind by the intruder. Add them up!
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
7817
5211
8868
2398
7921
T
7817
8801
8868
6999
6999
6999
5513
2398
5513
6999
7921
5844
9185
8868
5321
5211
8868
5844
6526
8868
T
7817
9185
7921
6999
3706
5321
4752 + 3065 =T
3255 + 3271 =M
2776 + 2435 =H
1492 + 2214 =O
3256 + 2588 =L
4692 + 4176 =E
5245 + 2676 =I
2993 + 5808 =N
3604 + 1909 =A
5217 + 3968 =V
2151 + 4848 =S
1522 + 876 =W
2344 + 2977 =R
0/13 letters found
Clue 3
Subtraction
The emergency backup battery lost some power during the break-in. Subtract the remaining charge to see what is missing.
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
8456
6694
8186
5501
4213
3349
3349
8496
5229
6694
8514
8186
7902
4941
8186
4941
8186
2064
8186
5229
8710
4213
3349
8282
3988
8710
7902
3988
5229
6694
7902
8514
2979
6694
T
8456
12460 - 4004 =T
12051 - 3341 =F
4467 - 254 =R
12346 - 3850 =K
9209 - 4268 =D
7187 - 1958 =S
7868 - 2367 =C
4739 - 1390 =O
5840 - 2861 =G
12179 - 3897 =M
11749 - 3235 =I
7033 - 339 =H
11269 - 3083 =E
4484 - 496 =A
9399 - 1497 =L
4752 - 2688 =Y
0/16 letters found
Clue 4
Multiplication facts (1-12)
The supply room has crates stacked in equal rows. Multiply the rows and columns to find the total boxes disturbed.
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
60
16
8
14
8
27
14
12
49
14
44
8
T
60
8
132
T
60
8
44
14
20
2
25
88
14
2
10
6
8
49
16
63
2
49
10 × 6 =T
7 × 9 =A
4 × 5 =P
7 × 7 =R
2 × 1 =I
8 × 11 =Y
3 × 9 =N
7 × 2 =S
2 × 3 =V
11 × 4 =D
11 × 12 =C
5 × 5 =K
4 × 4 =H
12 × 1 =O
8 × 1 =E
2 × 5 =L
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
We must divide the remaining energy cells equally among the scout droids to power up their search radars.
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
132 ÷ 12 = ?
4 ÷ 2 = ?
70 ÷ 10 = ?
20 ÷ 4 = ?
50 ÷ 5 = ?
4 ÷ 1 = ?
2 ÷ 2 = ?
6 ÷ 1 = ?
72 ÷ 6 = ?
15 ÷ 5 = ?
80 ÷ 10 = ?
Step 2 — cross out the sentence with each answer
1.The villain zoomed through the airlock with a solar jetpack, then pulled the glowing chest away with a tractor beam wand.
2.The villain cut open the vault using a laser welder, then pulled the glowing chest away with a tractor beam wand.
3.The villain tracked the patrol bots on a radar scanner, then tangled up the helper bots with a cosmic net launcher.
4.The villain cut open the vault using a laser welder, then escaped by making a giant hologram projector trick.
5.The villain cut open the vault using a laser welder, then grabbed the heavy cargo box using a magnetic claw.
6.The villain cut open the vault using a laser welder, then tangled up the helper bots with a cosmic net launcher.
7.The villain cut open the vault using a laser welder, then unlocked the main locker with a sonic screwdriver.
8.The villain tracked the patrol bots on a radar scanner, then unlocked the main locker with a sonic screwdriver.
9.The villain blocked the laser alarms with a plasma shield, then escaped by making a giant hologram projector trick.
10.The villain zoomed through the airlock with a solar jetpack, then escaped by making a giant hologram projector trick.
11.The villain blocked the laser alarms with a plasma shield, then pulled the glowing chest away with a tractor beam wand.
12.The villain tracked the patrol bots on a radar scanner, then grabbed the heavy cargo box using a magnetic claw.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Moon-Rocks
Culprit: Peggy Whitson (Plasma Shield · Hologram Projector · Silver Tinted Visor · Spiky Silver Buzz · Flashlight Beam)
- Clue 1 (Place value): "THE VILLAIN DOES NOT USE THE NET LAUNCHER"What is the value of the 3 in 63,866? = 3000 (T) · What is the value of the 4 in 10,646? = 40 (E) · What is the value of the 4 in 15,496? = 400 (O) · What is the value of the 2 in 84,923? = 20 (I) · What is the value of the 1 in 304,417? = 10 (R) · What is the value of the 2 in 87,266? = 200 (S) · What is the value of the 4 in 914,853? = 4000 (U) · What is the value of the 9 in 779,046? = 9000 (N) · What is the value of the 6 in 58,065? = 60 (H) · What is the value of the 9 in 432,492? = 90 (D) · What is the value of the 7 in 44,786? = 700 (L) · What is the value of the 5 in 45,260? = 5000 (A) · What is the value of the 5 in 849,573? = 500 (V) · What is the value of the 1 in 341,026? = 1000 (C)
- Clue 2 (Addition): "THE WITNESS SAW A SILVER HELMET VISOR"4752 + 3065 = 7817 (T) · 3255 + 3271 = 6526 (M) · 2776 + 2435 = 5211 (H) · 1492 + 2214 = 3706 (O) · 3256 + 2588 = 5844 (L) · 4692 + 4176 = 8868 (E) · 5245 + 2676 = 7921 (I) · 2993 + 5808 = 8801 (N) · 3604 + 1909 = 5513 (A) · 5217 + 3968 = 9185 (V) · 2151 + 4848 = 6999 (S) · 1522 + 876 = 2398 (W) · 2344 + 2977 = 5321 (R)
- Clue 3 (Subtraction): "THE CROOK SHIELDED EYES FROM A FLASHLIGHT"12460 - 4004 = 8456 (T) · 12051 - 3341 = 8710 (F) · 4467 - 254 = 4213 (R) · 12346 - 3850 = 8496 (K) · 9209 - 4268 = 4941 (D) · 7187 - 1958 = 5229 (S) · 7868 - 2367 = 5501 (C) · 4739 - 1390 = 3349 (O) · 5840 - 2861 = 2979 (G) · 12179 - 3897 = 8282 (M) · 11749 - 3235 = 8514 (I) · 7033 - 339 = 6694 (H) · 11269 - 3083 = 8186 (E) · 4484 - 496 = 3988 (A) · 9399 - 1497 = 7902 (L) · 4752 - 2688 = 2064 (Y)
- Clue 4 (Multiplication facts (1-12)): "THE SENSORS DETECTED SPIKY SILVER HAIR"10 × 6 = 60 (T) · 7 × 9 = 63 (A) · 4 × 5 = 20 (P) · 7 × 7 = 49 (R) · 2 × 1 = 2 (I) · 8 × 11 = 88 (Y) · 3 × 9 = 27 (N) · 7 × 2 = 14 (S) · 2 × 3 = 6 (V) · 11 × 4 = 44 (D) · 11 × 12 = 132 (C) · 5 × 5 = 25 (K) · 4 × 4 = 16 (H) · 12 × 1 = 12 (O) · 8 × 1 = 8 (E) · 2 × 5 = 10 (L)
- Clue 5 (Division facts (1-12)): surviving statement (box 9) → Peggy Whitson132 ÷ 12 = 11 · 4 ÷ 2 = 2 · 70 ÷ 10 = 7 · 20 ÷ 4 = 5 · 50 ÷ 5 = 10 · 4 ÷ 1 = 4 · 2 ÷ 2 = 1 · 6 ÷ 1 = 6 · 72 ÷ 6 = 12 · 15 ÷ 5 = 3 · 80 ÷ 10 = 8
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Place value, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Case of the Missing Moon-Rocks — set in Lunar Base Alpha
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects