Math Mysteries
🚀 Soccer, Dinosaurs, Space, CaGrade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision

The Great Space-Dino Trophy Caper

The Golden Goal Trophy has been stolen from the Asteroid Arena right before the cosmic championship game! We must examine the astro-turf clues to find which space dinosaur player took it. Detective, grab your gravity-cleats and help us crack this case!

Suspects

Possible suspects

Cross off a row as each clue rules it out. On screen, tap a row.

21 of 21 still in play
NameSignature MoveSpace GearAnkle BandageScale PatternDistraction
Saurus MessiRocket-Tail SprintJetpack CleatsWears Left-Foot BandageFiery Red CrestBubble Tea Cup
Spino-SpikeMeteor Slam-DunkCybernetic Tail-ArmorWears Left-Foot BandageShiny Blue SpikesSqueaky Space Toy
Rex StrikerLaser-Eye BlockCybernetic Tail-ArmorWears Left-Foot BandageFiery Red CrestShiny Gold Medal
Cosmo CleatGravity-Boost JumpMagnetic ShinguardsWears Right-Foot BandageShiny Blue SpikesShiny Gold Medal
Dino-DanRocket-Tail SprintCybernetic Tail-ArmorWears Left-Foot BandageShiny Blue SpikesBubble Tea Cup
Bronto-BenRocket-Tail SprintJetpack CleatsWears Right-Foot BandageShiny Blue SpikesShiny Gold Medal
Zlatan RaptorMeteor Slam-DunkJetpack CleatsWears Left-Foot BandageFiery Red CrestShiny Gold Medal
Ptera-PeleTail-Whip KickGlow-in-the-Dark HelmetWears Left-Foot BandageFiery Red CrestSqueaky Space Toy
Orbit OwenTail-Whip KickJetpack CleatsWears Left-Foot BandageNeon Green ScalesSqueaky Space Toy
Neymar-RexRocket-Tail SprintGlow-in-the-Dark HelmetWears Right-Foot BandageShiny Blue SpikesShiny Gold Medal
Mia HammsaurusRocket-Tail SprintForcefield GlovesWears Right-Foot BandageNeon Green ScalesSqueaky Space Toy
Buster BeakRocket-Tail SprintForcefield GlovesWears Right-Foot BandageShiny Blue SpikesBubble Tea Cup
Nova NedLaser-Eye BlockMagnetic ShinguardsWears Right-Foot BandageFiery Red CrestShiny Gold Medal
Veloci-ValMeteor Slam-DunkJetpack CleatsWears Left-Foot BandageShiny Blue SpikesSqueaky Space Toy
Ankylo-AlexMeteor Slam-DunkMagnetic ShinguardsWears Right-Foot BandageNeon Green ScalesSqueaky Space Toy
Comet CarlaRocket-Tail SprintMagnetic ShinguardsWears Left-Foot BandageFiery Red CrestShiny Gold Medal
Astro AbbyRocket-Tail SprintCybernetic Tail-ArmorWears Left-Foot BandageFiery Red CrestShiny Gold Medal
Megan DinoRocket-Tail SprintJetpack CleatsWears Left-Foot BandageFiery Red CrestShiny Gold Medal
Trixie RaptorMeteor Slam-DunkCybernetic Tail-ArmorWears Left-Foot BandageShiny Blue SpikesShiny Gold Medal
Giga-GabyLaser-Eye BlockMagnetic ShinguardsWears Left-Foot BandageFiery Red CrestShiny Gold Medal
Compy-CarterTail-Whip KickJetpack CleatsWears Left-Foot BandageNeon Green ScalesShiny Gold Medal
Clue 1

Rounding

The arena radar scanner is old and can only show rounded numbers of players nearby. We checked the security gate logs to narrow down the suspect.

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
20
5000
9000
2000
1300
30
30
90
1300
1100
30
90
3700
110
3000
3700
300
290
9000
230
1100
9000
T
20
1300
3700
T
20
90
1300
30
90
230
2300
700
230
Round 16 to the nearest tenT
Round 1,118 to the nearest hundredN
Round 662 to the nearest hundredO
Round 2,943 to the nearest thousandS
Round 4,855 to the nearest thousandH
Round 8,832 to the nearest thousandE
Round 1,668 to the nearest thousandV
Round 27 to the nearest tenL
Round 2,336 to the nearest hundredM
Round 94 to the nearest tenA
Round 293 to the nearest tenB
Round 232 to the nearest tenR
Round 3,682 to the nearest hundredC
Round 1,289 to the nearest hundredI
Round 301 to the nearest hundredY
Round 114 to the nearest tenK
0/16 letters found
Clue 2

Addition

The coach counted up all the shiny neon soccer balls left on the practice field to see if any extra players had visited.

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
4712
2830
8909
4872
6396
4872
9338
9338
6396
3108
A
4712
2608
4569
A
4712
2371
8909
3551
A
4712
4469
8740
6999
A
4712
5876
4872
9338
7474
2608
4569
1508 + 3204 =A
3289 + 3107 =T
4912 + 3997 =E
2765 + 4234 =W
4435 + 3039 =U
1219 + 1389 =N
1463 + 908 =G
2006 + 1102 =B
2014 + 1537 =M
3171 + 1398 =D
4324 + 4416 =K
2684 + 3192 =S
2064 + 2808 =F
5151 + 4187 =O
1815 + 1015 =L
1829 + 2640 =R
0/16 letters found
Clue 3

Subtraction

We took the total number of gravity boots in the locker room and subtracted the ones left behind to find out how many the thief took.

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
5935
4365
5785
4901
4961
6283
7531
6283
3460
T
5935
5785
4961
6283
1999
4365
2903
7531
4901
7281
6892
8440
7769
8378
5785
7769
6283
8440
8418 - 2483 =T
9721 - 1281 =L
7031 - 139 =O
9677 - 1908 =D
5214 - 1754 =F
10989 - 3708 =G
3347 - 444 =I
10093 - 1715 =M
8005 - 3104 =Y
9815 - 4030 =E
7077 - 794 =A
11875 - 4344 =N
5510 - 3511 =S
8855 - 3894 =R
6130 - 1765 =H
0/15 letters found
Clue 4

Multiplication facts (1-12)

The stadium snack bar has neat rows of space-juice boxes. We multiplied the rows by the stacks to see how many the thief drank.

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
9
50
4
63
5
56
5
63
27
84
5
63
24
99
24
88
63
27
A
9
50
6
A
9
40
63
9 × 1 =A
7 × 8 =Y
5 × 8 =K
3 × 9 =D
6 × 4 =S
9 × 11 =T
12 × 7 =C
10 × 5 =F
11 × 8 =H
6 × 1 =L
7 × 9 =E
1 × 5 =R
4 × 1 =I
0/13 letters found
Clue 5

Division facts (1-12) — the last clue

To search the asteroid field, we divided the security robot squads equally among the spaceships to cover more ground.

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
81 ÷ 9 = ?
1 ÷ 1 = ?
36 ÷ 12 = ?
22 ÷ 2 = ?
25 ÷ 5 = ?
40 ÷ 10 = ?
90 ÷ 9 = ?
24 ÷ 12 = ?
30 ÷ 5 = ?
12 ÷ 1 = ?
7 ÷ 1 = ?
Step 2 — cross out the sentence with each answer
1.The villain ignites a rocket-tail sprint down the field, then clicks magnetic shinguards together to escape.
2.The villain activates a gravity-boost jump to soar high, then flies away using jetpack cleats.
3.The villain ignites a rocket-tail sprint down the field, then flies away using jetpack cleats.
4.The villain uses a tail-whip kick to blast the ball, then blinds the guards with a glow-in-the-dark helmet.
5.The villain shines a laser-eye block to stop shots, then blinds the guards with a glow-in-the-dark helmet.
6.The villain uses a tail-whip kick to blast the ball, then flies away using jetpack cleats.
7.The villain shines a laser-eye block to stop shots, then grabs the trophy with forcefield gloves.
8.The villain shines a laser-eye block to stop shots, then clicks magnetic shinguards together to escape.
9.The villain performs a meteor slam-dunk into the goal, then flies away using jetpack cleats.
10.The villain ignites a rocket-tail sprint down the field, then grabs the trophy with forcefield gloves.
11.The villain performs a meteor slam-dunk into the goal, then deflects the laser grid with cybernetic tail-armor.
12.The villain ignites a rocket-tail sprint down the field, then blinds the guards with a glow-in-the-dark helmet.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 4 math
Math topics
Rounding, Addition, Subtraction, Multiplication, Division
Reading level
grades 3-4
Theme
The Great Space-Dino Trophy Caper — set in Asteroid Arena Stadium
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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