🏀 Famous NBA basketball playerGrade 3Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
Case of the Super Bad Superhero
A villain hides among the heroes of Mathhattan and has kidnapped the Mayor. The police can't tell friend from phony — only a sharp math detective can. Solve each clue's math to decode it, cross suspects off the list, and name the one hero left standing.
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 Power | Extra Power | Mask | Hair | Weakness |
|---|---|---|---|---|---|
| Owl Man | Teleportation | Sonic Scream | Masked | Orange | Cookies |
| Zapman | Teleportation | Super Strength | Masked | Green | Sunlight |
| Splash | Energy Blasts | Flight | Masked | Green | Sunlight |
| Iron Vox | Invisibility | Poisonous Burps | Masked | Orange | Silver |
| Razor | Mind Control | Super Strength | Unmasked | Green | Silver |
| Mrs. Amazing | Energy Blasts | Shape Shifting | Masked | Orange | Sunlight |
| Thunder Hawk | Mind Control | Poisonous Burps | Unmasked | Green | Sunlight |
| Blinker | Invisibility | Flight | Masked | Green | Sunlight |
| Pizza Peter | Mind Control | Sonic Scream | Unmasked | Purple | Sunlight |
| Titanicus | Invisibility | Shape Shifting | Unmasked | Purple | Cookies |
| Captain Nucleus | Super Speed | Flight | Unmasked | Green | Silver |
| Nightgale | Teleportation | Shape Shifting | Masked | Purple | Cookies |
| Colossal Crush | Mind Control | Shape Shifting | Unmasked | Purple | Silver |
| Dare Girl | Energy Blasts | Shape Shifting | Masked | Purple | Silver |
| Major Fury | Teleportation | Flight | Unmasked | Purple | Cookies |
| Lion Man | Energy Blasts | Super Strength | Masked | Green | Silver |
| Blitzfire | Mind Control | Super Strength | Masked | Green | Sunlight |
| Mega Mage | Mind Control | Super Strength | Masked | Orange | Cookies |
| Typhoon | Energy Blasts | Poisonous Burps | Masked | Purple | Silver |
| Quasar | Energy Blasts | Poisonous Burps | Masked | Green | Sunlight |
| Lady Bug | Energy Blasts | Super Strength | Masked | Green | Sunlight |
Clue 1
Rounding
A torn note flutters out of the Mayor's office — but the words are hidden behind a math code. Solve it to read 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
2000
600
7000
300
3000
5000
5000
60
3000
9000
50
60
9000
9000
500
T
2000
800
5000
40
Round 2,404 to the nearest thousandT
Round 618 to the nearest hundredH
Round 758 to the nearest hundredF
Round 44 to the nearest tenY
Round 320 to the nearest hundredV
Round 467 to the nearest hundredO
Round 54 to the nearest tenC
Round 5,359 to the nearest thousandL
Round 7,182 to the nearest thousandE
Round 8,708 to the nearest thousandN
Round 2,831 to the nearest thousandI
Round 61 to the nearest tenA
0/12 letters found
Clue 2
Addition
A witness left a message at the scene, locked behind more math. Work it out to hear what they saw.
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
321
702
740
786
512
364
875
875
441
364
362
647
441
786
875
786
505
364
A
321
512
786
740
505
364
441
647
702
A
321
875
448
A
321
875
430
364
618
138 + 183 =A
267 + 380 =O
345 + 167 =N
528 + 347 =S
194 + 236 =K
230 + 510 =I
359 + 259 =D
494 + 292 =T
328 + 177 =H
203 + 159 =P
137 + 311 =M
474 + 228 =W
142 + 299 =R
173 + 191 =E
0/14 letters found
Clue 3
Subtraction
Down at the docks, someone scared the villain off and scribbled how. Crack the numbers to find out.
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
504
706
410
621
127
T
504
243
706
410
614
344
344
127
125
281
697
T
504
614
243
867
410
697
621
T
504
127
243
529
706
T
504
T
504
344
621
890
344
243
286
697
873
127
125
243
529
706
T
504
557 - 53 =T
694 - 284 =E
1084 - 378 =H
723 - 194 =G
527 - 241 =D
302 - 175 =N
379 - 136 =I
1135 - 268 =K
1054 - 357 =S
443 - 99 =O
655 - 374 =Y
1196 - 323 =U
357 - 232 =L
1032 - 142 =V
958 - 337 =A
617 - 3 =R
0/16 letters found
Clue 4
Multiplication facts (1-12)
The clean-up crew found something the villain dropped. Do the math to see what it was.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
Y
25
55
12
64
99
45
40
81
72
66
44
45
40
81
55
64
100
66
121
121
45
88
44
99
66
32
88
121
66
121
72
88
121
80
44
Y
25
55
66
32
44
81
72
44
20
121
45
5 × 5 =Y
6 × 12 =T
11 × 5 =O
12 × 1 =U
9 × 9 =S
6 × 11 =R
5 × 4 =K
11 × 11 =E
9 × 11 =I
5 × 9 =N
8 × 8 =F
10 × 10 =G
11 × 8 =H
5 × 8 =D
4 × 11 =A
8 × 10 =M
8 × 4 =W
0/17 letters found
Clue 5
Division facts (1-12) — the last clue
You've almost got it. One last set of numbers will reveal exactly how the villain pulled it off.
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
56 ÷ 7 = ?
6 ÷ 6 = ?
45 ÷ 9 = ?
36 ÷ 9 = ?
33 ÷ 11 = ?
30 ÷ 5 = ?
99 ÷ 11 = ?
14 ÷ 7 = ?
12 ÷ 1 = ?
77 ÷ 11 = ?
66 ÷ 6 = ?
Step 2 — cross out the sentence with each answer
1.The villain bends minds to make victims obey, then tears open locked doors with raw strength.
2.The villain fires crackling energy blasts, then shape-shifts into a familiar face.
3.The villain races through the streets at impossible speed, then lets out a poisonous burp to weaken them.
4.The villain races through the streets at impossible speed, then shape-shifts into a familiar face.
5.The villain fires crackling energy blasts, then lets out a poisonous burp to weaken them.
6.The villain teleports behind victims without warning, then unleashes a sonic scream.
7.The villain turns invisible to slip past everyone, then lets out a poisonous burp to weaken them.
8.The villain teleports behind victims without warning, then tears open locked doors with raw strength.
9.The villain races through the streets at impossible speed, then unleashes a sonic scream.
10.The villain fires crackling energy blasts, then tears open locked doors with raw strength.
11.The villain fires crackling energy blasts, then takes to the sky.
12.The villain turns invisible to slip past everyone, then takes to the sky.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — Case of the Super Bad Superhero
Culprit: Lady Bug (Energy Blasts · Super Strength · Masked · Green · Sunlight)
- Clue 1 (Rounding): "THE VILLAIN CANNOT FLY"Round 2,404 to the nearest thousand = 2000 (T) · Round 618 to the nearest hundred = 600 (H) · Round 758 to the nearest hundred = 800 (F) · Round 44 to the nearest ten = 40 (Y) · Round 320 to the nearest hundred = 300 (V) · Round 467 to the nearest hundred = 500 (O) · Round 54 to the nearest ten = 50 (C) · Round 5,359 to the nearest thousand = 5000 (L) · Round 7,182 to the nearest thousand = 7000 (E) · Round 8,708 to the nearest thousand = 9000 (N) · Round 2,831 to the nearest thousand = 3000 (I) · Round 61 to the nearest ten = 60 (A)
- Clue 2 (Addition): "A WITNESS REPORTS THE ANTIHERO WAS MASKED"138 + 183 = 321 (A) · 267 + 380 = 647 (O) · 345 + 167 = 512 (N) · 528 + 347 = 875 (S) · 194 + 236 = 430 (K) · 230 + 510 = 740 (I) · 359 + 259 = 618 (D) · 494 + 292 = 786 (T) · 328 + 177 = 505 (H) · 203 + 159 = 362 (P) · 137 + 311 = 448 (M) · 474 + 228 = 702 (W) · 142 + 299 = 441 (R) · 173 + 191 = 364 (E)
- Clue 3 (Subtraction): "THE ANTIHERO ONLY STRIKES AT NIGHT TO AVOID SUNLIGHT"557 - 53 = 504 (T) · 694 - 284 = 410 (E) · 1084 - 378 = 706 (H) · 723 - 194 = 529 (G) · 527 - 241 = 286 (D) · 302 - 175 = 127 (N) · 379 - 136 = 243 (I) · 1135 - 268 = 867 (K) · 1054 - 357 = 697 (S) · 443 - 99 = 344 (O) · 655 - 374 = 281 (Y) · 1196 - 323 = 873 (U) · 357 - 232 = 125 (L) · 1032 - 142 = 890 (V) · 958 - 337 = 621 (A) · 617 - 3 = 614 (R)
- Clue 4 (Multiplication facts (1-12)): "YOU FIND STRANDS OF GREEN HAIR WHERE THE MAYOR WAS TAKEN"5 × 5 = 25 (Y) · 6 × 12 = 72 (T) · 11 × 5 = 55 (O) · 12 × 1 = 12 (U) · 9 × 9 = 81 (S) · 6 × 11 = 66 (R) · 5 × 4 = 20 (K) · 11 × 11 = 121 (E) · 9 × 11 = 99 (I) · 5 × 9 = 45 (N) · 8 × 8 = 64 (F) · 10 × 10 = 100 (G) · 11 × 8 = 88 (H) · 5 × 8 = 40 (D) · 4 × 11 = 44 (A) · 8 × 10 = 80 (M) · 8 × 4 = 32 (W)
- Clue 5 (Division facts (1-12)): surviving statement (box 10) → Lady Bug56 ÷ 7 = 8 · 6 ÷ 6 = 1 · 45 ÷ 9 = 5 · 36 ÷ 9 = 4 · 33 ÷ 11 = 3 · 30 ÷ 5 = 6 · 99 ÷ 11 = 9 · 14 ÷ 7 = 2 · 12 ÷ 1 = 12 · 77 ÷ 11 = 7 · 66 ÷ 6 = 11
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- Case of the Super Bad Superhero — set in the island of Mathhattan
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects