🚀 SpaceGrade 3Reading: grades 1-2RoundingAdditionSubtractionMultiplicationDivision
Mystery at Starlight Station
Someone swiped the golden space crystal from Starlight Station! Chief Astronomer Maya needs your help to catch the sneaky thief before the ship blasts off.
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 | Space Skill | Gear Item | Badge Side | Hair Style | Weakness |
|---|---|---|---|---|---|
| Kalpana Chawla | laser shield | star helmet | right patch | blue spiky hair | magnet trap |
| Peggy Whitson | warp boost | star helmet | right patch | silver helmet hair | magnet trap |
| Scott Kelly | warp boost | neon suit | left patch | neon red hair | bright flashlight |
| Alan Shepard | gravity flip | star helmet | right patch | silver helmet hair | bright flashlight |
| Michael Collins | astro jetpack | star helmet | right patch | silver helmet hair | magnet trap |
| Eileen Collins | comet dash | neon suit | left patch | silver helmet hair | bright flashlight |
| Bernard Harris | astro jetpack | star helmet | left patch | silver helmet hair | magnet trap |
| Joan Higginbotham | gravity flip | lunar boots | left patch | neon red hair | bright flashlight |
| Neil Armstrong | comet dash | star helmet | left patch | blue spiky hair | magnet trap |
| Christina Koch | laser shield | solar visor | right patch | silver helmet hair | magnet trap |
| Jessica Meir | laser shield | plasma glove | right patch | neon red hair | loud whistle |
| Sally Ride | comet dash | solar visor | right patch | blue spiky hair | magnet trap |
| Ellen Ochoa | warp boost | plasma glove | left patch | neon red hair | magnet trap |
| Chris Hadfield | warp boost | solar visor | left patch | blue spiky hair | magnet trap |
| Leland Melvin | comet dash | neon suit | left patch | neon red hair | loud whistle |
| Mae Jemison | warp boost | star helmet | right patch | neon red hair | magnet trap |
| John Glenn | gravity flip | lunar boots | right patch | silver helmet hair | magnet trap |
| Sunita Williams | comet dash | plasma glove | right patch | neon red hair | bright flashlight |
| Buzz Aldrin | gravity flip | neon suit | right patch | neon red hair | magnet trap |
| Victor Glover | astro jetpack | plasma glove | left patch | blue spiky hair | loud whistle |
| Valentina Tereshkova | warp boost | solar visor | right patch | silver helmet hair | magnet trap |
Clue 1
Rounding
The space radar screen shows rounded numbers for distance. Read the sensor screen to get 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
90
8000
5000
400
600
700
700
4000
600
40
500
80
5000
70
40
80
T
90
50
5000
4000
20
700
6000
40
4000
20
200
80
80
T
90
70
Round 90 to the nearest tenT
Round 43 to the nearest tenN
Round 77 to the nearest tenO
Round 553 to the nearest hundredI
Round 4,392 to the nearest thousandA
Round 23 to the nearest tenR
Round 478 to the nearest hundredD
Round 6,089 to the nearest thousandU
Round 5,070 to the nearest thousandE
Round 688 to the nearest hundredL
Round 52 to the nearest tenW
Round 246 to the nearest hundredB
Round 70 to the nearest tenS
Round 8,325 to the nearest thousandH
Round 412 to the nearest hundredV
0/15 letters found
Clue 2
Addition
Cadet Leo added up all the glowing moon rocks in the lab. Put the totals together to unlock clue two.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
W
504
266
511
804
684
580
580
580
265
W
504
265
827
266
577
600
511
939
265
511
568
600
693
804
511
600
684
580
244
266
511
168 + 336 =W
144 + 100 =U
387 + 297 =E
187 + 381 =C
335 + 265 =H
205 + 372 =G
282 + 229 =T
553 + 386 =P
542 + 285 =R
97 + 169 =I
465 + 228 =O
184 + 81 =A
277 + 303 =S
513 + 291 =N
0/14 letters found
Clue 3
Subtraction
The ship lost some power packs during the space jump. Take away the used packs to find clue three.
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
562
348
744
531
769
294
294
151
615
379
744
354
615
769
294
161
586
161
586
890
762
744
T
562
T
562
769
586
567
751 - 189 =T
1082 - 320 =N
925 - 35 =G
843 - 99 =E
716 - 149 =P
435 - 274 =M
586 - 292 =O
1013 - 244 =R
365 - 17 =H
831 - 245 =A
313 - 162 =K
547 - 16 =C
395 - 41 =D
623 - 244 =L
984 - 369 =F
0/15 letters found
Clue 4
Multiplication facts (1-12)
Bright rows of star badges sit on the shelf. Count the equal rows to get clue four.
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
25
84
15
1
22
77
15
1
54
49
S
25
3
56
108
55
60
35
55
56
18
55
22
35
32
3
60
32
22
S
25
84
55
54
55
5 × 5 =S
9 × 12 =V
12 × 7 =C
5 × 12 =R
3 × 6 =M
7 × 7 =D
4 × 8 =A
5 × 7 =H
9 × 6 =N
3 × 5 =O
7 × 11 =F
2 × 11 =T
7 × 8 =L
11 × 5 =E
1 × 1 =U
3 × 1 =I
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
The commander shared alien snacks equally among the crew. Divide the snacks to reveal 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
45 ÷ 5 = ?
33 ÷ 3 = ?
33 ÷ 11 = ?
6 ÷ 1 = ?
5 ÷ 5 = ?
49 ÷ 7 = ?
44 ÷ 11 = ?
25 ÷ 5 = ?
30 ÷ 3 = ?
14 ÷ 7 = ?
88 ÷ 11 = ?
Step 2 — cross out the sentence with each answer
1.The villain uses a gravity flip, then zips up a neon suit.
2.The villain triggers a warp boost, then zips up a neon suit.
3.The villain triggers a warp boost, then puts on a star helmet.
4.The villain triggers a warp boost, then charges a plasma glove.
5.The villain flies with an astro jetpack, then zips up a neon suit.
6.The villain activates a laser shield, then charges a plasma glove.
7.The villain zooms with a comet dash, then puts on a star helmet.
8.The villain activates a laser shield, then laces up lunar boots.
9.The villain triggers a warp boost, then adjusts a solar visor.
10.The villain zooms with a comet dash, then zips up a neon suit.
11.The villain flies with an astro jetpack, then puts on a star helmet.
12.The villain activates a laser shield, then adjusts a solar visor.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — Mystery at Starlight Station
Culprit: Christina Koch (laser shield · solar visor · right patch · silver helmet hair · magnet trap)
- Clue 1 (Rounding): "THE VILLAIN DOES NOT WEAR LUNAR BOOTS"Round 90 to the nearest ten = 90 (T) · Round 43 to the nearest ten = 40 (N) · Round 77 to the nearest ten = 80 (O) · Round 553 to the nearest hundred = 600 (I) · Round 4,392 to the nearest thousand = 4000 (A) · Round 23 to the nearest ten = 20 (R) · Round 478 to the nearest hundred = 500 (D) · Round 6,089 to the nearest thousand = 6000 (U) · Round 5,070 to the nearest thousand = 5000 (E) · Round 688 to the nearest hundred = 700 (L) · Round 52 to the nearest ten = 50 (W) · Round 246 to the nearest hundred = 200 (B) · Round 70 to the nearest ten = 70 (S) · Round 8,325 to the nearest thousand = 8000 (H) · Round 412 to the nearest hundred = 400 (V)
- Clue 2 (Addition): "WITNESS SAW A RIGHT PATCH ON THE SUIT"168 + 336 = 504 (W) · 144 + 100 = 244 (U) · 387 + 297 = 684 (E) · 187 + 381 = 568 (C) · 335 + 265 = 600 (H) · 205 + 372 = 577 (G) · 282 + 229 = 511 (T) · 553 + 386 = 939 (P) · 542 + 285 = 827 (R) · 97 + 169 = 266 (I) · 465 + 228 = 693 (O) · 184 + 81 = 265 (A) · 277 + 303 = 580 (S) · 513 + 291 = 804 (N)
- Clue 3 (Subtraction): "THE CROOK FLED FROM A MAGNET TRAP"751 - 189 = 562 (T) · 1082 - 320 = 762 (N) · 925 - 35 = 890 (G) · 843 - 99 = 744 (E) · 716 - 149 = 567 (P) · 435 - 274 = 161 (M) · 586 - 292 = 294 (O) · 1013 - 244 = 769 (R) · 365 - 17 = 348 (H) · 831 - 245 = 586 (A) · 313 - 162 = 151 (K) · 547 - 16 = 531 (C) · 395 - 41 = 354 (D) · 623 - 244 = 379 (L) · 984 - 369 = 615 (F)
- Clue 4 (Multiplication facts (1-12)): "SCOUT FOUND SILVER HELMET HAIR AT SCENE"5 × 5 = 25 (S) · 9 × 12 = 108 (V) · 12 × 7 = 84 (C) · 5 × 12 = 60 (R) · 3 × 6 = 18 (M) · 7 × 7 = 49 (D) · 4 × 8 = 32 (A) · 5 × 7 = 35 (H) · 9 × 6 = 54 (N) · 3 × 5 = 15 (O) · 7 × 11 = 77 (F) · 2 × 11 = 22 (T) · 7 × 8 = 56 (L) · 11 × 5 = 55 (E) · 1 × 1 = 1 (U) · 3 × 1 = 3 (I)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Christina Koch45 ÷ 5 = 9 · 33 ÷ 3 = 11 · 33 ÷ 11 = 3 · 6 ÷ 1 = 6 · 5 ÷ 5 = 1 · 49 ÷ 7 = 7 · 44 ÷ 11 = 4 · 25 ÷ 5 = 5 · 30 ÷ 3 = 10 · 14 ÷ 7 = 2 · 88 ÷ 11 = 8
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 1-2
- Theme
- Mystery at Starlight Station — set in Starlight Station
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects