🚀 SpaceGrade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Great Moon Base Heist
Oh no! A mysterious Cosmic Bandit has snuck into Astro-Dome Delta and snatched the rare Golden Moon Meteorite right out of the display case! The Chief Astronomer needs your help to decode the clues, track down the bandit, and save the moon colony's biggest treasure!
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 Suit Upgrade | Alien Gadget | Helmet Antenna Side | Space Cadet Hair | Space Food Weakness |
|---|---|---|---|---|---|
| Alan Shepard | solar shield | portal gun | right side | cosmic purple | tang orange juice |
| Nova Star | jetpack wings | freeze ray | right side | cosmic purple | tang orange juice |
| Neil Armstrong | radar goggles | gravity wand | right side | cosmic purple | freeze dried ice cream |
| Buzz Aldrin | solar shield | tractor beam | right side | neon green | tang orange juice |
| Ellen Ochoa | laser glove | tractor beam | left side | neon green | tang orange juice |
| Guion Bluford | laser glove | freeze ray | right side | stardust silver | tang orange juice |
| Halley Comet | radar goggles | portal gun | left side | neon green | freeze dried ice cream |
| Commander Comet | laser glove | tractor beam | left side | stardust silver | freeze dried ice cream |
| Sally Ride | radar goggles | shrink beam | right side | cosmic purple | tang orange juice |
| Stephen Hawking | gravity boots | tractor beam | right side | stardust silver | space cheese blocks |
| Chris Hadfield | solar shield | shrink beam | right side | cosmic purple | tang orange juice |
| Mae Jemison | gravity boots | portal gun | right side | stardust silver | space cheese blocks |
| Peggy Whitson | solar shield | shrink beam | left side | stardust silver | freeze dried ice cream |
| Margaret Hamilton | solar shield | shrink beam | left side | cosmic purple | tang orange juice |
| Valentina Tereshkova | jetpack wings | tractor beam | right side | stardust silver | tang orange juice |
| Ray Nebula | jetpack wings | portal gun | right side | neon green | space cheese blocks |
| Michael Collins | jetpack wings | tractor beam | right side | cosmic purple | tang orange juice |
| Yuri Gagarin | gravity boots | tractor beam | right side | cosmic purple | freeze dried ice cream |
| Katherine Johnson | gravity boots | tractor beam | right side | neon green | space cheese blocks |
| Carl Sagan | laser glove | gravity wand | left side | stardust silver | space cheese blocks |
| John Glenn | radar goggles | shrink beam | right side | stardust silver | tang orange juice |
Clue 1
Rounding
The Bandit ran past the security radar, but the radar screen only shows rounded numbers. Round the distance to the nearest ten to find 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
2900
230
5000
290
2300
70
70
900
2300
90
30
1700
5000
200
90
1700
T
2900
1300
200
5000
900
3000
1700
2000
T
2900
900
70
9000
1300
90
Round 2,863 to the nearest hundredT
Round 91 to the nearest tenN
Round 231 to the nearest tenH
Round 2,276 to the nearest hundredI
Round 30 to the nearest tenD
Round 4,972 to the nearest thousandE
Round 1,269 to the nearest hundredU
Round 1,669 to the nearest thousandR
Round 202 to the nearest hundredS
Round 74 to the nearest tenL
Round 3,476 to the nearest thousandP
Round 291 to the nearest tenV
Round 883 to the nearest hundredA
Round 9,129 to the nearest thousandG
Round 1,670 to the nearest hundredO
0/15 letters found
Clue 2
Addition
We found a scrap of paper where the bandit added up stolen oxygen tanks. Add the numbers of tanks to unlock the next 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
5431
8548
5883
5392
9889
3588
8548
T
5431
4411
9889
4237
5883
2953
8555
T
5431
5883
8555
8555
2953
3858
2953
4411
4411
5883
5883
8555
3486 + 1945 =T
2408 + 1180 =G
5562 + 4327 =I
2588 + 1270 =W
2622 + 5926 =H
1403 + 3008 =S
2685 + 2707 =R
2392 + 1845 =D
2220 + 3663 =E
939 + 2014 =A
4902 + 3653 =N
0/11 letters found
Clue 3
Subtraction
The main computer is locked. Subtract the broken solar panels from the total count to bypass the security screen!
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
1142
4842
5900
1133
2651
1636
4842
5900
1133
1218
6635
8730
5764
7327
1218
5998
7327
4842
1636
1218
4469
T
1142
1661
1218
3484
5764
4024
4024
4842
5764
5900
2546 - 1404 =T
10978 - 4343 =J
3316 - 2098 =E
4577 - 2941 =R
6819 - 2795 =L
5645 - 803 =A
10544 - 3217 =C
7200 - 4549 =O
7192 - 2723 =D
8153 - 4669 =V
8729 - 2965 =I
13202 - 4472 =U
6247 - 249 =S
2293 - 632 =H
5907 - 7 =N
2353 - 1220 =G
0/16 letters found
Clue 4
Multiplication facts (1-12)
The escape pod bay has rows of moon boot footprints. Multiply the number of rows by the boots per row to see where the bandit went!
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
36
30
22
55
110
64
99
15
45
55
88
32
4
45
50
110
10
50
120
30
66
15
4
10
6 × 6 =W
5 × 3 =A
10 × 1 =R
5 × 11 =O
8 × 8 =N
8 × 4 =M
11 × 6 =H
5 × 9 =C
2 × 11 =F
10 × 12 =L
4 × 1 =I
11 × 8 =S
11 × 10 =U
3 × 10 =E
5 × 10 =P
9 × 11 =D
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
The robot guards have to share fuel packs equally. Divide the total fuel packs by the number of guards to find the final secret!
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
9 ÷ 3 = ?
8 ÷ 1 = ?
132 ÷ 12 = ?
3 ÷ 3 = ?
8 ÷ 2 = ?
22 ÷ 11 = ?
20 ÷ 4 = ?
30 ÷ 3 = ?
60 ÷ 10 = ?
63 ÷ 7 = ?
21 ÷ 3 = ?
Step 2 — cross out the sentence with each answer
1.The villain scanned with radar goggles, then blasted a freeze ray.
2.The villain shot a beam from the laser glove, then escaped through a portal gun warp.
3.The villain fired up jetpack wings to fly, then pulled the safe with a tractor beam.
4.The villain raised a glowing solar shield, then blasted a freeze ray.
5.The villain raised a glowing solar shield, then pulled the safe with a tractor beam.
6.The villain fired up jetpack wings to fly, then lifted the moon rock with a gravity wand.
7.The villain scanned with radar goggles, then lifted the moon rock with a gravity wand.
8.The villain scanned with radar goggles, then shrank the lunar rover with a shrink beam.
9.The villain activated gravity boots to float, then shrank the lunar rover with a shrink beam.
10.The villain shot a beam from the laser glove, then shrank the lunar rover with a shrink beam.
11.The villain raised a glowing solar shield, then shrank the lunar rover with a shrink beam.
12.The villain fired up jetpack wings to fly, then blasted a freeze ray.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Moon Base Heist
Culprit: Nova Star (jetpack wings · freeze ray · right side · cosmic purple · tang orange juice)
- Clue 1 (Rounding): "THE VILLAIN DOES NOT USE A PORTAL GUN"Round 2,863 to the nearest hundred = 2900 (T) · Round 91 to the nearest ten = 90 (N) · Round 231 to the nearest ten = 230 (H) · Round 2,276 to the nearest hundred = 2300 (I) · Round 30 to the nearest ten = 30 (D) · Round 4,972 to the nearest thousand = 5000 (E) · Round 1,269 to the nearest hundred = 1300 (U) · Round 1,669 to the nearest thousand = 2000 (R) · Round 202 to the nearest hundred = 200 (S) · Round 74 to the nearest ten = 70 (L) · Round 3,476 to the nearest thousand = 3000 (P) · Round 291 to the nearest ten = 290 (V) · Round 883 to the nearest hundred = 900 (A) · Round 9,129 to the nearest thousand = 9000 (G) · Round 1,670 to the nearest hundred = 1700 (O)
- Clue 2 (Addition): "THE RIGHT SIDE ANTENNA WAS SEEN"3486 + 1945 = 5431 (T) · 2408 + 1180 = 3588 (G) · 5562 + 4327 = 9889 (I) · 2588 + 1270 = 3858 (W) · 2622 + 5926 = 8548 (H) · 1403 + 3008 = 4411 (S) · 2685 + 2707 = 5392 (R) · 2392 + 1845 = 4237 (D) · 2220 + 3663 = 5883 (E) · 939 + 2014 = 2953 (A) · 4902 + 3653 = 8555 (N)
- Clue 3 (Subtraction): "TANG ORANGE JUICE SCARED THE VILLAIN"2546 - 1404 = 1142 (T) · 10978 - 4343 = 6635 (J) · 3316 - 2098 = 1218 (E) · 4577 - 2941 = 1636 (R) · 6819 - 2795 = 4024 (L) · 5645 - 803 = 4842 (A) · 10544 - 3217 = 7327 (C) · 7200 - 4549 = 2651 (O) · 7192 - 2723 = 4469 (D) · 8153 - 4669 = 3484 (V) · 8729 - 2965 = 5764 (I) · 13202 - 4472 = 8730 (U) · 6247 - 249 = 5998 (S) · 2293 - 632 = 1661 (H) · 5907 - 7 = 5900 (N) · 2353 - 1220 = 1133 (G)
- Clue 4 (Multiplication facts (1-12)): "WE FOUND A COSMIC PURPLE HAIR"6 × 6 = 36 (W) · 5 × 3 = 15 (A) · 10 × 1 = 10 (R) · 5 × 11 = 55 (O) · 8 × 8 = 64 (N) · 8 × 4 = 32 (M) · 11 × 6 = 66 (H) · 5 × 9 = 45 (C) · 2 × 11 = 22 (F) · 10 × 12 = 120 (L) · 4 × 1 = 4 (I) · 11 × 8 = 88 (S) · 11 × 10 = 110 (U) · 3 × 10 = 30 (E) · 5 × 10 = 50 (P) · 9 × 11 = 99 (D)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Nova Star9 ÷ 3 = 3 · 8 ÷ 1 = 8 · 132 ÷ 12 = 11 · 3 ÷ 3 = 1 · 8 ÷ 2 = 4 · 22 ÷ 11 = 2 · 20 ÷ 4 = 5 · 30 ÷ 3 = 10 · 60 ÷ 10 = 6 · 63 ÷ 7 = 9 · 21 ÷ 3 = 7
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Great Moon Base Heist — set in Astro-Dome Delta on the Moon
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects