Grade 2Reading: grades 1-2
The Case of the Stolen Treasure Map
The big treasure map is gone! Last night a Sea Thief snuck onto the dock and took it from the Captain's ship. Help us find who did it.
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 | Pirate Skill | Sneaky Trick | Pirate Type | Hat | Weakness |
|---|---|---|---|---|---|
| Jolly Jo | treasure digging | drawing fake maps | girl pirate | striped hat | afraid of seagulls |
| Calico Kate | rope swinging | climbing ropes | boy pirate | striped hat | scared of crabs |
| Wave Winnie | treasure digging | climbing ropes | girl pirate | red hat | afraid of seagulls |
| Cutlass Carl | rope swinging | picking locks | girl pirate | striped hat | afraid of seagulls |
| Sandy Sue | sword fighting | picking locks | girl pirate | black hat | scared of crabs |
| Mango Meg | sword fighting | climbing ropes | girl pirate | striped hat | scared of crabs |
| Compass Cole | treasure digging | climbing ropes | girl pirate | black hat | afraid of seagulls |
| Gunner Gus | treasure digging | drawing fake maps | girl pirate | black hat | afraid of seagulls |
| Lagoon Lily | rope swinging | drawing fake maps | girl pirate | red hat | afraid of seagulls |
| Driftwood Dan | parrot training | drawing fake maps | girl pirate | black hat | afraid of seagulls |
| Anchor Amy | rope swinging | picking locks | boy pirate | striped hat | scared of crabs |
| Captain Pegleg Pete | rope swinging | throwing nets | girl pirate | red hat | afraid of seagulls |
| Tide Tom | rope swinging | climbing ropes | girl pirate | black hat | scared of crabs |
| Salty Sally | treasure digging | throwing nets | boy pirate | red hat | gets seasick |
| Misty Mae | treasure digging | throwing nets | girl pirate | red hat | afraid of seagulls |
| Red Robin | fast sailing | hiding in a barrel | girl pirate | striped hat | afraid of seagulls |
| Sailor Seth | fast sailing | climbing ropes | boy pirate | red hat | afraid of seagulls |
| Barnacle Bill | rope swinging | hiding in a barrel | girl pirate | red hat | afraid of seagulls |
| Stormy Sam | fast sailing | drawing fake maps | girl pirate | striped hat | gets seasick |
| Reef Rex | sword fighting | picking locks | girl pirate | red hat | gets seasick |
| Plank Polly | fast sailing | hiding in a barrel | boy pirate | striped hat | gets seasick |
Clue 1
Place value (tens & ones)
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
58
90
33
T
58
90
48
33
71
44
25
31
31
17
T
58
90
48
75
33
48
31
25
23
25
35
35
33
14
What number has 5 tens and 8 ones?T
What number has 9 tens and 0 ones?H
What number has 3 tens and 3 ones?E
What number has 4 tens and 8 ones?I
What number has 7 tens and 1 one?F
What number has 4 tens and 4 ones?C
What number has 2 tens and 5 ones?A
What number has 3 tens and 1 one?N
What number has 1 ten and 7 ones?O
What number has 7 tens and 5 ones?D
What number has 2 tens and 3 ones?B
What number has 3 tens and 5 ones?R
What number has 1 ten and 4 ones?L
0/13 letters found
Clue 2
Addition
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
86
31
38
57
46
48
81
81
81
A
86
31
A
86
47
38
87
25
77
38
87
A
86
57
48
87
67
46
80
83
83
55 + 31 =A
16 + 15 =W
23 + 15 =I
31 + 26 =T
23 + 23 =N
34 + 14 =E
55 + 26 =S
16 + 31 =G
53 + 34 =R
15 + 10 =L
36 + 41 =P
40 + 27 =U
41 + 39 =O
46 + 37 =F
0/14 letters found
Clue 3
Subtraction
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
56
34
49
A
56
42
76
73
73
34
63
76
A
56
45
24
49
83
A
56
67
83
34
81
A
56
53
49
83
89
84
49
89
84
30
49
37
A
56
45
A
56
82
68 - 12 =A
64 - 30 =S
66 - 17 =E
75 - 33 =G
79 - 3 =U
76 - 3 =L
92 - 29 =Q
72 - 27 =W
32 - 8 =K
109 - 26 =D
79 - 12 =N
101 - 20 =C
70 - 17 =R
94 - 5 =T
101 - 17 =H
37 - 7 =I
69 - 32 =F
94 - 12 =Y
0/18 letters found
Clue 4
Skip counting
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
18
50
16
140
35
A
18
42
80
A
18
60
140
50
120
12
12
16
140
120
100
42
35
16
140
16
25
33
Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, ▢, 20, 22A
Skip-count by 10s — fill the blank: 10, 20, 30, 40, ▢, 60, 70R
Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, ▢, 18, 20E
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ▢, 150, 160D
Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, ▢, 40, 45H
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ▢, 45, 48T
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, ▢, 90, 100W
Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ▢, 65, 70S
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ▢, 130, 140O
Skip-count by 3s — fill the blank: 3, 6, 9, ▢, 15, 18P
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ▢, 110, 120N
Skip-count by 5s — fill the blank: 5, 10, 15, 20, ▢, 30, 35C
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ▢, 36, 39K
0/13 letters found
Clue 5
Missing addends — the last clue
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
6 + ▢ = 13
4 + ▢ = 16
8 + ▢ = 13
5 + ▢ = 15
8 + ▢ = 10
8 + ▢ = 16
6 + ▢ = 10
6 + ▢ = 15
2 + ▢ = 3
2 + ▢ = 13
6 + ▢ = 9
Step 2 — cross out the sentence with each answer
1.The villain swings a sword, then throws a net over the guard.
2.The villain sails away fast, then climbs up the ropes.
3.The villain sends a parrot ahead, then climbs up the ropes.
4.The villain sends a parrot ahead, then throws a net over the guard.
5.The villain swings in on a rope, then leaves a fake map.
6.The villain digs up the treasure, then climbs up the ropes.
7.The villain swings in on a rope, then throws a net over the guard.
8.The villain swings in on a rope, then picks the lock.
9.The villain swings a sword, then picks the lock.
10.The villain sends a parrot ahead, then leaves a fake map.
11.The villain sails away fast, then hides in a barrel.
12.The villain digs up the treasure, then throws a net over the guard.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Stolen Treasure Map
Culprit: Wave Winnie (treasure digging · climbing ropes · girl pirate · red hat · afraid of seagulls)
- Clue 1 (Place value (tens & ones)): "THE THIEF CANNOT HIDE IN A BARREL"What number has 5 tens and 8 ones? = 58 (T) · What number has 9 tens and 0 ones? = 90 (H) · What number has 3 tens and 3 ones? = 33 (E) · What number has 4 tens and 8 ones? = 48 (I) · What number has 7 tens and 1 one? = 71 (F) · What number has 4 tens and 4 ones? = 44 (C) · What number has 2 tens and 5 ones? = 25 (A) · What number has 3 tens and 1 one? = 31 (N) · What number has 1 ten and 7 ones? = 17 (O) · What number has 7 tens and 5 ones? = 75 (D) · What number has 2 tens and 3 ones? = 23 (B) · What number has 3 tens and 5 ones? = 35 (R) · What number has 1 ten and 4 ones? = 14 (L)
- Clue 2 (Addition): "A WITNESS SAW A GIRL PIRATE RUN OFF"55 + 31 = 86 (A) · 16 + 15 = 31 (W) · 23 + 15 = 38 (I) · 31 + 26 = 57 (T) · 23 + 23 = 46 (N) · 34 + 14 = 48 (E) · 55 + 26 = 81 (S) · 16 + 31 = 47 (G) · 53 + 34 = 87 (R) · 15 + 10 = 25 (L) · 36 + 41 = 77 (P) · 40 + 27 = 67 (U) · 41 + 39 = 80 (O) · 46 + 37 = 83 (F)
- Clue 3 (Subtraction): "A SEAGULL SQUAWKED AND SCARED THE THIEF AWAY"68 - 12 = 56 (A) · 64 - 30 = 34 (S) · 66 - 17 = 49 (E) · 75 - 33 = 42 (G) · 79 - 3 = 76 (U) · 76 - 3 = 73 (L) · 92 - 29 = 63 (Q) · 72 - 27 = 45 (W) · 32 - 8 = 24 (K) · 109 - 26 = 83 (D) · 79 - 12 = 67 (N) · 101 - 20 = 81 (C) · 70 - 17 = 53 (R) · 94 - 5 = 89 (T) · 101 - 17 = 84 (H) · 37 - 7 = 30 (I) · 69 - 32 = 37 (F) · 94 - 12 = 82 (Y)
- Clue 4 (Skip counting): "A RED HAT WAS DROPPED ON THE DECK"Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, ▢, 20, 22 = 18 (A) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, ▢, 60, 70 = 50 (R) · Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, ▢, 18, 20 = 16 (E) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ▢, 150, 160 = 140 (D) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, ▢, 40, 45 = 35 (H) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ▢, 45, 48 = 42 (T) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, ▢, 90, 100 = 80 (W) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ▢, 65, 70 = 60 (S) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ▢, 130, 140 = 120 (O) · Skip-count by 3s — fill the blank: 3, 6, 9, ▢, 15, 18 = 12 (P) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ▢, 110, 120 = 100 (N) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, ▢, 30, 35 = 25 (C) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ▢, 36, 39 = 33 (K)
- Clue 5 (Missing addends): surviving statement (box 6) → Wave Winnie6 + ▢ = 13 = 7 · 4 + ▢ = 16 = 12 · 8 + ▢ = 13 = 5 · 5 + ▢ = 15 = 10 · 8 + ▢ = 10 = 2 · 8 + ▢ = 16 = 8 · 6 + ▢ = 10 = 4 · 6 + ▢ = 15 = 9 · 2 + ▢ = 3 = 1 · 2 + ▢ = 13 = 11 · 6 + ▢ = 9 = 3
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Place value, Addition, Subtraction, Skip counting, Missing addends
- Reading level
- grades 1-2
- Theme
- The Case of the Stolen Treasure Map — set in the pirate port of Crabapple Cove
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects