🚀 SpaceGrade 5Reading: grades 3-4MultiplicationWord problemsFractions of a numberOrder of operationsDivision
The Lunar Base Mystery
Someone tampered with the lunar base oxygen tanks! Space Detective Leo must inspect the evidence to find 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
| Name | Primary Tool | Gadget | Glove Hand | Helmet Style | Counter Tool |
|---|---|---|---|---|---|
| Guion Bluford | Jetpack Dash | Oxygen Drain | Right Handed | Gold Helmet | Freezer Beam |
| Neil Armstrong | Sonic Pulse | Gravity Warp | Right Handed | Silver Helmet | Strobe Light |
| Sunita Williams | Sonic Pulse | Oxygen Drain | Right Handed | Gold Helmet | Freezer Beam |
| Eileen Collins | Sonic Pulse | Radar Jammer | Right Handed | Red Helmet | Freezer Beam |
| Sally Ride | Laser Cutter | Oxygen Drain | Left Handed | Red Helmet | Magnet Trap |
| Bernard Harris | Plasma Torch | Shield Bubble | Left Handed | Gold Helmet | Strobe Light |
| Peggy Whitson | Sonic Pulse | Gravity Warp | Right Handed | Red Helmet | Strobe Light |
| John Glenn | Plasma Torch | Oxygen Drain | Right Handed | Gold Helmet | Magnet Trap |
| Alan Shepard | Plasma Torch | Gravity Warp | Right Handed | Red Helmet | Strobe Light |
| Mark Kelly | Jetpack Dash | Radar Jammer | Left Handed | Gold Helmet | Strobe Light |
| Kalpana Chawla | Grav Boots | Oxygen Drain | Right Handed | Red Helmet | Freezer Beam |
| Buzz Aldrin | Plasma Torch | Solar Flash | Left Handed | Red Helmet | Freezer Beam |
| Scott Kelly | Plasma Torch | Solar Flash | Right Handed | Red Helmet | Freezer Beam |
| Mae Jemison | Grav Boots | Solar Flash | Left Handed | Gold Helmet | Strobe Light |
| Maeve Vance | Plasma Torch | Shield Bubble | Left Handed | Red Helmet | Magnet Trap |
| Christina Koch | Sonic Pulse | Radar Jammer | Right Handed | Gold Helmet | Strobe Light |
| Leland Melvin | Plasma Torch | Oxygen Drain | Right Handed | Red Helmet | Magnet Trap |
| Jessica Meir | Grav Boots | Gravity Warp | Right Handed | Red Helmet | Freezer Beam |
| Victor Glover | Laser Cutter | Gravity Warp | Left Handed | Gold Helmet | Strobe Light |
| Michael Collins | Sonic Pulse | Shield Bubble | Right Handed | Red Helmet | Freezer Beam |
| Chris Hadfield | Plasma Torch | Oxygen Drain | Left Handed | Red Helmet | Freezer Beam |
Clue 1
Multiplication facts (1-12)
You count the supply crates stored in grid 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
77
70
6
11
96
11
33
6
99
T
77
81
50
81
18
40
T
77
96
11
6
49
9
1
66
50
T
77
63
2
1
9
33
11 × 7 =T
5 × 10 =I
3 × 11 =P
7 × 9 =Y
7 × 7 =G
4 × 10 =O
6 × 3 =N
8 × 12 =U
1 × 1 =A
11 × 9 =C
11 × 1 =S
9 × 1 =R
3 × 2 =E
6 × 11 =V
9 × 9 =D
2 × 1 =W
7 × 10 =H
0/17 letters found
Clue 2
Word problems
Commander Vance needs help tallying research items.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
R
34
30
61
116
46
116
105
111
D
E
D
Space Cadet found 12 moon rocks yesterday and 22 more today. How many moon rocks in all?R
There were 92 moon rocks. 31 were used up. How many moon rocks are left?G
Space Cadet lined up 6 rows of 5 space pods. How many space pods in all?I
There were 144 star maps. 33 were used up. How many star maps are left?N
There were 139 moon rocks. 34 were used up. How many moon rocks are left?A
There were 73 oxygen tanks. 27 were used up. How many oxygen tanks are left?T
There were 136 solar panels. 20 were used up. How many solar panels are left?H
0/7 letters found
Clue 3
Fractions of a number
You figure out what fraction of solar power 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.
T
37
35
22
23
7
10
10
3
7
21
33
3
27
27
T
37
24
39
39
22
8
32
11
14
30
22
22
4
22
30
32
22
3
17
1/5 of 185 =T
5/10 of 46 =V
1/2 of 48 =O
2/6 of 21 =I
3/8 of 88 =W
3/6 of 44 =E
5/10 of 70 =H
1/2 of 8 =Z
4/8 of 78 =P
1/4 of 44 =Y
7/10 of 20 =F
2/4 of 42 =N
1/8 of 80 =L
3/10 of 100 =R
1/4 of 68 =M
4/10 of 20 =D
6/8 of 36 =S
1/6 of 18 =A
4/5 of 40 =B
0/19 letters found
Clue 4
Order of operations
You run the launch computer sequence in exact order.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
R
44
18
37
14
18
73
78
18
46
16
53
R
44
28
46
53
14
18
16
71
18
R
44
18
40
38
36
13
37
5 × 9 - 1 =R
5 × 12 - 23 =D
5 + 4 × 2 =N
9 × 6 - 16 =O
35 + 2 × 9 =C
12 × 8 - 23 =L
10 + 9 × 4 =T
5 + 3 × 3 =H
16 + 8 × 3 =F
5 × 7 - 19 =S
60 + 2 × 9 =M
28 + 2 × 4 =U
9 + 3 × 3 =E
51 + 4 × 5 =W
1 + 3 × 9 =A
0/15 letters found
Clue 5
Division facts (1-12) — the last clue
You divide the radio signal code evenly into pods.
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
35 ÷ 5 = ?
70 ÷ 7 = ?
72 ÷ 9 = ?
18 ÷ 2 = ?
20 ÷ 4 = ?
54 ÷ 9 = ?
16 ÷ 8 = ?
9 ÷ 9 = ?
3 ÷ 1 = ?
22 ÷ 2 = ?
12 ÷ 3 = ?
Step 2 — cross out the sentence with each answer
1.The villain blasted the door lock, then warped local gravity.
2.The villain turned off gravity, then flashed solar light.
3.The villain sliced the air lock, then turned on a radar jammer.
4.The villain cut the power cable, then activated a shield bubble.
5.The villain cut the power cable, then drained oxygen tanks.
6.The villain turned off gravity, then turned on a radar jammer.
7.The villain blasted the door lock, then turned on a radar jammer.
8.The villain cut the power cable, then flashed solar light.
9.The villain zoomed across the bay, then warped local gravity.
10.The villain turned off gravity, then drained oxygen tanks.
11.The villain sliced the air lock, then activated a shield bubble.
12.The villain blasted the door lock, then activated a shield bubble.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Lunar Base Mystery
Culprit: Michael Collins (Sonic Pulse · Shield Bubble · Right Handed · Red Helmet · Freezer Beam)
- Clue 1 (Multiplication facts (1-12)): "THE SUSPECT DID NOT USE GRAVITY WARP"11 × 7 = 77 (T) · 5 × 10 = 50 (I) · 3 × 11 = 33 (P) · 7 × 9 = 63 (Y) · 7 × 7 = 49 (G) · 4 × 10 = 40 (O) · 6 × 3 = 18 (N) · 8 × 12 = 96 (U) · 1 × 1 = 1 (A) · 11 × 9 = 99 (C) · 11 × 1 = 11 (S) · 9 × 1 = 9 (R) · 3 × 2 = 6 (E) · 6 × 11 = 66 (V) · 9 × 9 = 81 (D) · 2 × 1 = 2 (W) · 7 × 10 = 70 (H)
- Clue 2 (Word problems): "RIGHT HANDED"Space Cadet found 12 moon rocks yesterday and 22 more today. How many moon rocks in all? = 34 (R) · There were 92 moon rocks. 31 were used up. How many moon rocks are left? = 61 (G) · Space Cadet lined up 6 rows of 5 space pods. How many space pods in all? = 30 (I) · There were 144 star maps. 33 were used up. How many star maps are left? = 111 (N) · There were 139 moon rocks. 34 were used up. How many moon rocks are left? = 105 (A) · There were 73 oxygen tanks. 27 were used up. How many oxygen tanks are left? = 46 (T) · There were 136 solar panels. 20 were used up. How many solar panels are left? = 116 (H)
- Clue 3 (Fractions of a number): "THE VILLAIN WAS STOPPED BY FREEZER BEAM"1/5 of 185 = 37 (T) · 5/10 of 46 = 23 (V) · 1/2 of 48 = 24 (O) · 2/6 of 21 = 7 (I) · 3/8 of 88 = 33 (W) · 3/6 of 44 = 22 (E) · 5/10 of 70 = 35 (H) · 1/2 of 8 = 4 (Z) · 4/8 of 78 = 39 (P) · 1/4 of 44 = 11 (Y) · 7/10 of 20 = 14 (F) · 2/4 of 42 = 21 (N) · 1/8 of 80 = 10 (L) · 3/10 of 100 = 30 (R) · 1/4 of 68 = 17 (M) · 4/10 of 20 = 8 (D) · 6/8 of 36 = 27 (S) · 1/6 of 18 = 3 (A) · 4/5 of 40 = 32 (B)
- Clue 4 (Order of operations): "RED HELMET SCRATCHES WERE FOUND"5 × 9 - 1 = 44 (R) · 5 × 12 - 23 = 37 (D) · 5 + 4 × 2 = 13 (N) · 9 × 6 - 16 = 38 (O) · 35 + 2 × 9 = 53 (C) · 12 × 8 - 23 = 73 (L) · 10 + 9 × 4 = 46 (T) · 5 + 3 × 3 = 14 (H) · 16 + 8 × 3 = 40 (F) · 5 × 7 - 19 = 16 (S) · 60 + 2 × 9 = 78 (M) · 28 + 2 × 4 = 36 (U) · 9 + 3 × 3 = 18 (E) · 51 + 4 × 5 = 71 (W) · 1 + 3 × 9 = 28 (A)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Michael Collins35 ÷ 5 = 7 · 70 ÷ 7 = 10 · 72 ÷ 9 = 8 · 18 ÷ 2 = 9 · 20 ÷ 4 = 5 · 54 ÷ 9 = 6 · 16 ÷ 8 = 2 · 9 ÷ 9 = 1 · 3 ÷ 1 = 3 · 22 ÷ 2 = 11 · 12 ÷ 3 = 4
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Multiplication, Word problems, Fractions of a number, Order of operations, Division
- Reading level
- grades 3-4
- Theme
- The Lunar Base Mystery — set in Lunar Base Alpha
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects