🚀 SpaceGrade 1Reading: grades 1-2Place valueAdditionSubtractionSkip countingMissing addends
The Starlight Station Mystery
Someone snuck into the Starlight Space Station and hid the space core! Help the crew solve the math clues to find the villain.
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 Tool | Gear Item | Hand Used | Helmet Color | Weakness |
|---|---|---|---|---|---|
| Cadet Kai | Laser Beam | Comet Dash | Left Handed | Blue Helmet | Loud Whistle |
| Cadet Mia | Rocket Boost | Cosmic Magnet | Left Handed | Blue Helmet | Water Spray |
| Cadet Maya | Zero Gravity | Nebula Cloud | Left Handed | Red Helmet | Loud Whistle |
| Cadet Ruby | Moon Jump | Cosmic Magnet | Left Handed | Silver Helmet | Bright Light |
| Cadet Ivy | Moon Jump | Plasma Blaster | Left Handed | Red Helmet | Water Spray |
| Valentina Tereshkova | Laser Beam | Plasma Blaster | Right Handed | Red Helmet | Loud Whistle |
| Yuri Gagarin | Moon Jump | Comet Dash | Left Handed | Red Helmet | Loud Whistle |
| Mae Jemison | Laser Beam | Meteor Blast | Right Handed | Silver Helmet | Loud Whistle |
| Cadet Zoe | Star Shield | Cosmic Magnet | Left Handed | Silver Helmet | Loud Whistle |
| Cadet Ava | Rocket Boost | Nebula Cloud | Right Handed | Red Helmet | Loud Whistle |
| Sally Ride | Moon Jump | Nebula Cloud | Right Handed | Red Helmet | Loud Whistle |
| Cadet Liam | Rocket Boost | Plasma Blaster | Left Handed | Blue Helmet | Water Spray |
| Cadet Eli | Star Shield | Cosmic Magnet | Left Handed | Red Helmet | Loud Whistle |
| Cadet Jax | Star Shield | Plasma Blaster | Right Handed | Blue Helmet | Loud Whistle |
| Cadet Max | Laser Beam | Nebula Cloud | Right Handed | Red Helmet | Loud Whistle |
| Cadet Finn | Moon Jump | Nebula Cloud | Left Handed | Red Helmet | Loud Whistle |
| Cadet Ella | Rocket Boost | Cosmic Magnet | Left Handed | Red Helmet | Loud Whistle |
| Buzz Aldrin | Moon Jump | Plasma Blaster | Right Handed | Red Helmet | Water Spray |
| Chris Hadfield | Moon Jump | Plasma Blaster | Right Handed | Silver Helmet | Bright Light |
| Cadet Sam | Moon Jump | Plasma Blaster | Left Handed | Red Helmet | Bright Light |
| John Glenn | Star Shield | Nebula Cloud | Left Handed | Red Helmet | Water Spray |
Clue 1
Place value
The control deck computer displays tens and ones to reveal a secret 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
90
25
84
50
72
16
16
29
72
58
36
75
84
54
58
75
T
90
57
54
84
78
75
79
84
T
90
36
29
54
25
What number has 9 tens and 0 ones?T
What number has 7 tens and 9 ones?M
What number has 3 tens and 6 ones?D
What number has 7 tens and 2 ones?I
What number has 7 tens and 8 ones?C
What number has 2 tens and 9 ones?A
What number has 5 tens and 7 ones?U
What number has 7 tens and 5 ones?O
What number has 1 ten and 6 ones?L
What number has 2 tens and 5 ones?H
What number has 5 tens and 8 ones?N
What number has 8 tens and 4 ones?E
What number has 5 tens and 4 ones?S
What number has 5 tens and 0 ones?V
0/14 letters found
Clue 2
Addition
Astronaut Leo adds up the moon rocks found near the launch pad.
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
14
18
17
9
7
17
19
15
11
5
19
7
2
13
T
14
13
9
4
17
20
T
14
18
19
7
2
17
2
8 + 6 =T
9 + 6 =K
3 + 4 =N
12 + 5 =E
1 + 3 =L
11 + 8 =A
7 + 6 =I
6 + 12 =H
7 + 4 =Y
6 + 3 =S
1 + 4 =B
6 + 14 =F
1 + 1 =D
0/13 letters found
Clue 3
Subtraction
Cadet Maya counts how many glow badges are left after the raid.
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
11
6
16
18
5
17
17
13
5
1
12
13
1
15
12
7
3
13
17
7
19
8
9
6
5
2
T
11
17
16
17 - 6 =T
16 - 9 =O
14 - 8 =H
20 - 1 =U
6 - 3 =M
2 - 1 =N
16 - 8 =D
14 - 2 =R
12 - 3 =W
19 - 1 =V
19 - 3 =E
20 - 3 =L
20 - 5 =F
16 - 3 =A
10 - 8 =S
12 - 7 =I
0/16 letters found
Clue 4
Skip counting
Commander Buzz counts battery packs by twos along the hallway.
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
27
10
30
18
16
30
40
9
30
15
26
A
27
70
18
10
33
14
14
30
18
A
27
15
15
16
30
70
21
30
6
30
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33A
Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60L
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15M
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18P
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, ___, 35, 40E
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, ___, 21, 24D
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39O
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, ___, 80, 90S
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30W
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10N
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21T
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14R
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27C
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20H
0/14 letters found
Clue 5
Missing addends — the last clue
Engineer Sam checks how many extra solar cells are needed to restore power.
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 + ___ = 12
3 + ___ = 13
7 + ___ = 11
2 + ___ = 9
10 + ___ = 19
2 + ___ = 3
5 + ___ = 10
6 + ___ = 9
6 + ___ = 18
6 + ___ = 14
10 + ___ = 21
Step 2 — cross out the sentence with each answer
1.The villain leaps with moon jump, then grabs the plasma blaster.
2.The villain activates zero gravity, then hides in the nebula cloud.
3.The villain fires the rocket boost, then triggers the comet dash.
4.The villain fires the rocket boost, then attaches the cosmic magnet.
5.The villain leaps with moon jump, then triggers the comet dash.
6.The villain raises the star shield, then attaches the cosmic magnet.
7.The villain zaps the laser beam, then hides in the nebula cloud.
8.The villain fires the rocket boost, then launches the meteor blast.
9.The villain activates zero gravity, then grabs the plasma blaster.
10.The villain leaps with moon jump, then hides in the nebula cloud.
11.The villain leaps with moon jump, then attaches the cosmic magnet.
12.The villain raises the star shield, then grabs the plasma blaster.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Starlight Station Mystery
Culprit: Cadet Eli (Star Shield · Cosmic Magnet · Left Handed · Red Helmet · Loud Whistle)
- Clue 1 (Place value): "THE VILLAIN DOES NOT USE COMET DASH"What number has 9 tens and 0 ones? = 90 (T) · What number has 7 tens and 9 ones? = 79 (M) · What number has 3 tens and 6 ones? = 36 (D) · What number has 7 tens and 2 ones? = 72 (I) · What number has 7 tens and 8 ones? = 78 (C) · What number has 2 tens and 9 ones? = 29 (A) · What number has 5 tens and 7 ones? = 57 (U) · What number has 7 tens and 5 ones? = 75 (O) · What number has 1 ten and 6 ones? = 16 (L) · What number has 2 tens and 5 ones? = 25 (H) · What number has 5 tens and 8 ones? = 58 (N) · What number has 8 tens and 4 ones? = 84 (E) · What number has 5 tens and 4 ones? = 54 (S) · What number has 5 tens and 0 ones? = 50 (V)
- Clue 2 (Addition): "THE SNEAKY BANDIT IS LEFT HANDED"8 + 6 = 14 (T) · 9 + 6 = 15 (K) · 3 + 4 = 7 (N) · 12 + 5 = 17 (E) · 1 + 3 = 4 (L) · 11 + 8 = 19 (A) · 7 + 6 = 13 (I) · 6 + 12 = 18 (H) · 7 + 4 = 11 (Y) · 6 + 3 = 9 (S) · 1 + 4 = 5 (B) · 6 + 14 = 20 (F) · 1 + 1 = 2 (D)
- Clue 3 (Subtraction): "THE VILLAIN RAN FROM A LOUD WHISTLE"17 - 6 = 11 (T) · 16 - 9 = 7 (O) · 14 - 8 = 6 (H) · 20 - 1 = 19 (U) · 6 - 3 = 3 (M) · 2 - 1 = 1 (N) · 16 - 8 = 8 (D) · 14 - 2 = 12 (R) · 12 - 3 = 9 (W) · 19 - 1 = 18 (V) · 19 - 3 = 16 (E) · 20 - 3 = 17 (L) · 20 - 5 = 15 (F) · 16 - 3 = 13 (A) · 10 - 8 = 2 (S) · 12 - 7 = 5 (I)
- Clue 4 (Skip counting): "A RED HELMET WAS DROPPED AT THE SCENE"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (A) · Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60 = 40 (L) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (M) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (P) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, ___, 35, 40 = 30 (E) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, ___, 21, 24 = 18 (D) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (O) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, ___, 80, 90 = 70 (S) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (W) · Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (N) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21 = 15 (T) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (R) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (C) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (H)
- Clue 5 (Missing addends): surviving statement (box 6) → Cadet Eli10 + ___ = 12 = 2 · 3 + ___ = 13 = 10 · 7 + ___ = 11 = 4 · 2 + ___ = 9 = 7 · 10 + ___ = 19 = 9 · 2 + ___ = 3 = 1 · 5 + ___ = 10 = 5 · 6 + ___ = 9 = 3 · 6 + ___ = 18 = 12 · 6 + ___ = 14 = 8 · 10 + ___ = 21 = 11
About this mystery
- Grade level
- Grade 1 math
- Math topics
- Place value, Addition, Subtraction, Skip counting, Missing addends
- Reading level
- grades 1-2
- Theme
- The Starlight Station Mystery — set in Starlight Space Station
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects