🦕 DinosaursGrade 2Reading: grades 1-2Place valueAdditionSubtractionSkip countingMissing addends
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 | Sex | Hair | Weakness |
|---|---|---|---|---|---|
| Doctor Bolt | Energy Blasts | Shape Shifting | Female | Purple | Sunlight |
| Quasar | Energy Blasts | Poisonous Burps | Female | Green | Sunlight |
| Blitzfire | Mind Control | Shape Shifting | Male | Green | Sunlight |
| Mega Mage | Mind Control | Super Strength | Female | Orange | Cookies |
| Mrs. Amazing | Energy Blasts | Super Strength | Male | Purple | Silver |
| Razor | Teleportation | Super Strength | Female | Green | Sunlight |
| Nightgale | Invisibility | Sonic Scream | Male | Orange | Silver |
| Iron Vox | Invisibility | Shape Shifting | Female | Green | Sunlight |
| Titanicus | Teleportation | Shape Shifting | Female | Green | Sunlight |
| Dare Girl | Super Speed | Shape Shifting | Female | Purple | Silver |
| Thunder Hawk | Super Speed | Shape Shifting | Male | Green | Silver |
| Starlight | Energy Blasts | Flight | Female | Green | Sunlight |
| The Giggler | Energy Blasts | Poisonous Burps | Male | Purple | Cookies |
| Major Fury | Invisibility | Super Strength | Female | Green | Silver |
| Colossal Crush | Super Speed | Sonic Scream | Female | Purple | Cookies |
| Pizza Peter | Invisibility | Flight | Male | Purple | Sunlight |
| Splash | Invisibility | Poisonous Burps | Female | Orange | Sunlight |
| Blinker | Energy Blasts | Super Strength | Male | Orange | Sunlight |
| Captain Nucleus | Super Speed | Flight | Female | Orange | Sunlight |
| Owl Man | Mind Control | Flight | Male | Purple | Silver |
| Typhoon | Super Speed | Shape Shifting | Male | Orange | Cookies |
Clue 1
Place value (tens & ones)
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
78
45
25
58
32
34
34
29
32
97
95
29
97
97
91
T
78
75
34
67
What number has 7 tens and 8 ones?T
What number has 9 tens and 5 ones?C
What number has 5 tens and 8 ones?V
What number has 3 tens and 2 ones?I
What number has 7 tens and 5 ones?F
What number has 2 tens and 9 ones?A
What number has 3 tens and 4 ones?L
What number has 2 tens and 5 ones?E
What number has 9 tens and 1 one?O
What number has 9 tens and 7 ones?N
What number has 6 tens and 7 ones?Y
What number has 4 tens and 5 ones?H
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
50
32
49
82
71
65
54
54
33
65
69
48
33
82
54
82
77
A
50
82
82
77
65
A
50
71
82
49
77
65
33
48
49
54
A
50
91
65
41
A
50
35
65
30 + 20 =A
23 + 31 =S
17 + 18 =L
22 + 47 =P
24 + 9 =R
52 + 25 =H
23 + 25 =O
29 + 12 =M
20 + 12 =W
29 + 20 =I
29 + 36 =E
33 + 49 =T
33 + 58 =F
44 + 27 =N
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
21
82
54
48
75
T
21
89
82
54
25
86
86
75
28
34
79
T
21
25
89
67
54
79
48
T
21
75
89
59
82
T
21
T
21
86
48
44
86
89
81
79
35
75
28
89
59
82
T
21
50 - 29 =T
65 - 21 =V
112 - 30 =H
45 - 11 =Y
115 - 36 =S
66 - 18 =A
48 - 13 =U
115 - 26 =I
74 - 7 =K
118 - 32 =O
73 - 19 =E
112 - 31 =D
41 - 16 =R
73 - 14 =G
89 - 14 =N
31 - 3 =L
0/16 letters found
Clue 4
Skip counting
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
6
130
100
42
25
65
22
26
14
120
10
65
22
26
130
42
21
120
12
12
65
110
10
25
120
27
110
12
120
12
14
110
12
90
10
Y
6
130
120
27
10
26
14
10
39
12
65
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10Y
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150O
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48F
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120U
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30S
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140R
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14A
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18T
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110M
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33W
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35I
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45K
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26D
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27G
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75N
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130H
Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18E
0/17 letters found
Clue 5
Missing addends — 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
7 + ___ = 12
2 + ___ = 9
8 + ___ = 20
6 + ___ = 7
8 + ___ = 18
6 + ___ = 12
2 + ___ = 4
2 + ___ = 6
7 + ___ = 15
4 + ___ = 13
3 + ___ = 14
Step 2 — cross out the sentence with each answer
1.The villain turns invisible to slip past everyone, then lets out a poisonous burp to weaken them.
2.The villain fires crackling energy blasts, then unleashes a sonic scream.
3.The villain teleports behind victims without warning, then shape-shifts into a familiar face.
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 bends minds to make victims obey, then shape-shifts into a familiar face.
7.The villain teleports behind victims without warning, then tears open locked doors with raw strength.
8.The villain bends minds to make victims obey, then unleashes a sonic scream.
9.The villain races through the streets at impossible speed, then lets out a poisonous burp to weaken them.
10.The villain turns invisible to slip past everyone, 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 shape-shifts into a familiar face.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — Case of the Super Bad Superhero
Culprit: Titanicus (Teleportation · Shape Shifting · Female · Green · Sunlight)
- Clue 1 (Place value (tens & ones)): "THE VILLAIN CANNOT FLY"What number has 7 tens and 8 ones? = 78 (T) · What number has 9 tens and 5 ones? = 95 (C) · What number has 5 tens and 8 ones? = 58 (V) · What number has 3 tens and 2 ones? = 32 (I) · What number has 7 tens and 5 ones? = 75 (F) · What number has 2 tens and 9 ones? = 29 (A) · What number has 3 tens and 4 ones? = 34 (L) · What number has 2 tens and 5 ones? = 25 (E) · What number has 9 tens and 1 one? = 91 (O) · What number has 9 tens and 7 ones? = 97 (N) · What number has 6 tens and 7 ones? = 67 (Y) · What number has 4 tens and 5 ones? = 45 (H)
- Clue 2 (Addition): "A WITNESS REPORTS THAT THE ANTIHERO IS A FEMALE"30 + 20 = 50 (A) · 23 + 31 = 54 (S) · 17 + 18 = 35 (L) · 22 + 47 = 69 (P) · 24 + 9 = 33 (R) · 52 + 25 = 77 (H) · 23 + 25 = 48 (O) · 29 + 12 = 41 (M) · 20 + 12 = 32 (W) · 29 + 20 = 49 (I) · 29 + 36 = 65 (E) · 33 + 49 = 82 (T) · 33 + 58 = 91 (F) · 44 + 27 = 71 (N)
- Clue 3 (Subtraction): "THE ANTIHERO ONLY STRIKES AT NIGHT TO AVOID SUNLIGHT"50 - 29 = 21 (T) · 65 - 21 = 44 (V) · 112 - 30 = 82 (H) · 45 - 11 = 34 (Y) · 115 - 36 = 79 (S) · 66 - 18 = 48 (A) · 48 - 13 = 35 (U) · 115 - 26 = 89 (I) · 74 - 7 = 67 (K) · 118 - 32 = 86 (O) · 73 - 19 = 54 (E) · 112 - 31 = 81 (D) · 41 - 16 = 25 (R) · 73 - 14 = 59 (G) · 89 - 14 = 75 (N) · 31 - 3 = 28 (L)
- Clue 4 (Skip counting): "YOU FIND STRANDS OF GREEN HAIR WHERE THE MAYOR WAS TAKEN"Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (Y) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (O) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (F) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (U) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (S) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (R) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (A) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (T) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (M) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (W) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (I) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (K) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (D) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (G) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (N) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (H) · Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18 = 12 (E)
- Clue 5 (Missing addends): surviving statement (box 3) → Titanicus7 + ___ = 12 = 5 · 2 + ___ = 9 = 7 · 8 + ___ = 20 = 12 · 6 + ___ = 7 = 1 · 8 + ___ = 18 = 10 · 6 + ___ = 12 = 6 · 2 + ___ = 4 = 2 · 2 + ___ = 6 = 4 · 7 + ___ = 15 = 8 · 4 + ___ = 13 = 9 · 3 + ___ = 14 = 11
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Place value, Addition, Subtraction, Skip counting, Missing addends
- Reading level
- grades 1-2
- 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