Grade 2Reading: grades 1-2Place valueAdditionSubtractionSkip countingMissing addends
The Case of the Missing Treasure Map
Someone grabbed the big treasure map and ran into the trees. Now the Trail Guide is missing too! Help the camp kids follow the clues and find the Map Snatcher.
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 | Explorer Style | Gadget | Kind of Explorer | Hair Color | Weak Spot |
|---|---|---|---|---|---|
| Ivy | cave crawler | spyglass | girl explorer | brown hair | ticklish feet |
| Finn | cliff climber | rope ladder | boy explorer | red hair | ticklish feet |
| Nia | vine swinger | compass | girl explorer | red hair | sneezes at flowers |
| Ruby | jungle tracker | spyglass | boy explorer | red hair | scared of bugs |
| Zoe | jungle tracker | grappling hook | girl explorer | red hair | ticklish feet |
| Fern | cliff climber | grappling hook | boy explorer | red hair | ticklish feet |
| Sam | cave crawler | compass | boy explorer | brown hair | ticklish feet |
| Cody | river rafter | grappling hook | boy explorer | brown hair | sneezes at flowers |
| Lily | vine swinger | compass | girl explorer | black hair | scared of bugs |
| Hazel | cliff climber | lantern | boy explorer | brown hair | ticklish feet |
| Leo | jungle tracker | rope ladder | boy explorer | brown hair | ticklish feet |
| Pearl | cave crawler | lantern | boy explorer | brown hair | ticklish feet |
| Jack | cave crawler | compass | boy explorer | black hair | ticklish feet |
| Max | cave crawler | lantern | girl explorer | brown hair | sneezes at flowers |
| Beau | cliff climber | rope ladder | boy explorer | black hair | ticklish feet |
| Gus | cliff climber | spyglass | girl explorer | red hair | ticklish feet |
| Owen | cave crawler | spyglass | boy explorer | brown hair | ticklish feet |
| Jake | vine swinger | compass | girl explorer | red hair | scared of bugs |
| Cole | vine swinger | grappling hook | girl explorer | black hair | scared of bugs |
| Ella | cliff climber | grappling hook | boy explorer | black hair | ticklish feet |
| Daisy | river rafter | compass | girl explorer | black hair | scared of bugs |
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
17
48
79
94
54
47
T
17
13
48
79
70
13
47
54
54
27
T
17
74
94
79
47
70
27
76
79
23
47
81
81
79
70
What number has 1 ten and 7 ones?T
What number has 4 tens and 8 ones?H
What number has 7 tens and 9 ones?E
What number has 9 tens and 4 ones?S
What number has 5 tens and 4 ones?N
What number has 4 tens and 7 ones?A
What number has 1 ten and 3 ones?C
What number has 7 tens and 0 ones?R
What number has 2 tens and 7 ones?O
What number has 7 tens and 4 ones?U
What number has 7 tens and 6 ones?P
What number has 2 tens and 3 ones?L
What number has 8 tens and 1 one?D
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
39
89
A
39
26
32
86
56
54
A
39
84
A
39
27
87
40
56
36
21
24
21
29
87
29
94
86
29
56
86
86
54
14 + 25 =A
51 + 38 =C
12 + 14 =M
12 + 20 =P
49 + 37 =E
36 + 20 =R
16 + 38 =S
53 + 31 =W
12 + 15 =B
49 + 38 =O
16 + 24 =Y
21 + 15 =U
15 + 6 =N
12 + 12 =I
15 + 14 =T
46 + 48 =H
0/16 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.
W
42
17
71
70
73
20
13
17
82
71
50
17
71
50
70
17
15
65
79
82
70
71
52
45
71
65
W
42
65
69
68 - 26 =W
53 - 36 =E
90 - 19 =T
99 - 29 =I
104 - 31 =C
39 - 19 =K
20 - 7 =L
122 - 40 =D
55 - 5 =H
36 - 21 =F
66 - 1 =A
95 - 16 =N
80 - 28 =G
70 - 25 =O
73 - 4 =Y
0/15 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
60
15
25
90
28
33
120
A
60
14
25
35
A
60
27
90
33
18
120
39
50
A
60
42
18
A
60
15
35
39
Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ▢, 65, 70A
Skip-count by 5s — fill the blank: 5, 10, ▢, 20, 25B
Skip-count by 5s — fill the blank: 5, 10, 15, 20, ▢, 30, 35R
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ▢, 100, 110O
Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ▢, 30, 32W
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ▢, 36, 39N
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ▢, 130, 140H
Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, ▢, 16, 18I
Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, ▢, 40, 45L
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ▢, 30, 33Y
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, ▢, 21, 24T
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ▢, 42, 45E
Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ▢, 55, 60M
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ▢, 45, 48P
0/14 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 + ▢ = 8
9 + ▢ = 16
4 + ▢ = 7
5 + ▢ = 13
2 + ▢ = 13
7 + ▢ = 17
7 + ▢ = 16
10 + ▢ = 15
9 + ▢ = 21
8 + ▢ = 9
5 + ▢ = 9
Step 2 — cross out the sentence with each answer
1.The villain sneaks through the tall grass, then lights a lantern.
2.The villain crawls out of a cave, then checks a compass.
3.The villain climbs down the cliff, then lights a lantern.
4.The villain swings in on a vine, then drops a rope ladder.
5.The villain floats up on a raft, then checks a compass.
6.The villain crawls out of a cave, then peeks through a spyglass.
7.The villain crawls out of a cave, then lights a lantern.
8.The villain crawls out of a cave, then drops a rope ladder.
9.The villain sneaks through the tall grass, then checks a compass.
10.The villain climbs down the cliff, then peeks through a spyglass.
11.The villain swings in on a vine, then tosses a grappling hook.
12.The villain climbs down the cliff, then drops a rope ladder.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Treasure Map
Culprit: Owen (cave crawler · spyglass · boy explorer · brown hair · ticklish feet)
- Clue 1 (Place value (tens & ones)): "THE SNATCHER CANNOT USE A ROPE LADDER"What number has 1 ten and 7 ones? = 17 (T) · What number has 4 tens and 8 ones? = 48 (H) · What number has 7 tens and 9 ones? = 79 (E) · What number has 9 tens and 4 ones? = 94 (S) · What number has 5 tens and 4 ones? = 54 (N) · What number has 4 tens and 7 ones? = 47 (A) · What number has 1 ten and 3 ones? = 13 (C) · What number has 7 tens and 0 ones? = 70 (R) · What number has 2 tens and 7 ones? = 27 (O) · What number has 7 tens and 4 ones? = 74 (U) · What number has 7 tens and 6 ones? = 76 (P) · What number has 2 tens and 3 ones? = 23 (L) · What number has 8 tens and 1 one? = 81 (D)
- Clue 2 (Addition): "A CAMPER SAW A BOY RUN INTO THE TREES"14 + 25 = 39 (A) · 51 + 38 = 89 (C) · 12 + 14 = 26 (M) · 12 + 20 = 32 (P) · 49 + 37 = 86 (E) · 36 + 20 = 56 (R) · 16 + 38 = 54 (S) · 53 + 31 = 84 (W) · 12 + 15 = 27 (B) · 49 + 38 = 87 (O) · 16 + 24 = 40 (Y) · 21 + 15 = 36 (U) · 15 + 6 = 21 (N) · 12 + 12 = 24 (I) · 15 + 14 = 29 (T) · 46 + 48 = 94 (H)
- Clue 3 (Subtraction): "WE TICKLED THE THIEF AND IT GOT AWAY"68 - 26 = 42 (W) · 53 - 36 = 17 (E) · 90 - 19 = 71 (T) · 99 - 29 = 70 (I) · 104 - 31 = 73 (C) · 39 - 19 = 20 (K) · 20 - 7 = 13 (L) · 122 - 40 = 82 (D) · 55 - 5 = 50 (H) · 36 - 21 = 15 (F) · 66 - 1 = 65 (A) · 95 - 16 = 79 (N) · 80 - 28 = 52 (G) · 70 - 25 = 45 (O) · 73 - 4 = 69 (Y)
- Clue 4 (Skip counting): "A BROWN HAIR LAY ON THE MAP TABLE"Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ▢, 65, 70 = 60 (A) · Skip-count by 5s — fill the blank: 5, 10, ▢, 20, 25 = 15 (B) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, ▢, 30, 35 = 25 (R) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ▢, 100, 110 = 90 (O) · Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ▢, 30, 32 = 28 (W) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ▢, 36, 39 = 33 (N) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ▢, 130, 140 = 120 (H) · Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, ▢, 16, 18 = 14 (I) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, ▢, 40, 45 = 35 (L) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ▢, 30, 33 = 27 (Y) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, ▢, 21, 24 = 18 (T) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ▢, 42, 45 = 39 (E) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ▢, 55, 60 = 50 (M) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ▢, 45, 48 = 42 (P)
- Clue 5 (Missing addends): surviving statement (box 6) → Owen6 + ▢ = 8 = 2 · 9 + ▢ = 16 = 7 · 4 + ▢ = 7 = 3 · 5 + ▢ = 13 = 8 · 2 + ▢ = 13 = 11 · 7 + ▢ = 17 = 10 · 7 + ▢ = 16 = 9 · 10 + ▢ = 15 = 5 · 9 + ▢ = 21 = 12 · 8 + ▢ = 9 = 1 · 5 + ▢ = 9 = 4
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 Missing Treasure Map — set in Camp Wildwood deep in the green jungle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects