Grade 2Reading: grades 1-2
The Case of the Missing Treasure Map
The big treasure map is gone! Someone grabbed the Map Keeper and ran deep into the jungle. Can you find the Map Thief before the sun goes down?
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 | Way to Travel | Trusty Tool | Witness Saw | Headgear | Weak Spot |
|---|---|---|---|---|---|
| Nina | paddles a canoe | throws a lasso | a girl | a brown hat | afraid of spiders |
| Ava | rides a camel | reads a compass | a girl | a green cap | very ticklish |
| Tom | climbs the cliffs | throws a lasso | a boy | a brown hat | afraid of spiders |
| Lily | swings on vines | blows a horn | a girl | a brown hat | afraid of spiders |
| Mia | climbs the cliffs | blows a horn | a boy | a brown hat | afraid of spiders |
| Jake | rides a camel | blows a horn | a girl | a green cap | very ticklish |
| Owen | paddles a canoe | lights a torch | a boy | a green cap | afraid of spiders |
| Maya | swings on vines | throws a lasso | a girl | a green cap | afraid of spiders |
| Cole | rides a camel | reads a compass | a girl | a brown hat | afraid of spiders |
| Leo | rides a camel | lights a torch | a girl | a brown hat | scared of thunder |
| Drew | sails a raft | digs with a shovel | a boy | a red bandana | scared of thunder |
| Ella | climbs the cliffs | lights a torch | a boy | a red bandana | scared of thunder |
| Pia | paddles a canoe | reads a compass | a girl | a brown hat | scared of thunder |
| Sam | paddles a canoe | reads a compass | a boy | a red bandana | scared of thunder |
| Jack | paddles a canoe | reads a compass | a boy | a red bandana | very ticklish |
| Theo | swings on vines | blows a horn | a girl | a green cap | scared of thunder |
| Max | sails a raft | digs with a shovel | a girl | a brown hat | afraid of spiders |
| Zoe | climbs the cliffs | throws a lasso | a girl | a red bandana | very ticklish |
| Finn | paddles a canoe | blows a horn | a girl | a green cap | scared of thunder |
| Ben | paddles a canoe | blows a horn | a girl | a brown hat | afraid of spiders |
| Rosa | swings on vines | throws a lasso | a boy | a red bandana | afraid of spiders |
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
12
70
89
88
11
62
62
14
11
49
56
14
49
49
74
T
12
13
89
14
64
14
56
74
96
45
14
77
77
What number has 1 ten and 2 ones?T
What number has 7 tens and 0 ones?H
What number has 8 tens and 9 ones?E
What number has 8 tens and 8 ones?V
What number has 1 ten and 1 one?I
What number has 6 tens and 2 ones?L
What number has 1 ten and 4 ones?A
What number has 4 tens and 9 ones?N
What number has 5 tens and 6 ones?C
What number has 7 tens and 4 ones?O
What number has 1 ten and 3 ones?R
What number has 6 tens and 4 ones?D
What number has 9 tens and 6 ones?M
What number has 4 tens and 5 ones?P
What number has 7 tens and 7 ones?S
0/15 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
56
22
27
65
46
95
32
32
32
A
56
22
A
56
59
27
66
43
66
92
46
33
76
76
29 + 27 =A
9 + 13 =W
8 + 19 =I
31 + 34 =T
24 + 22 =N
63 + 32 =E
22 + 10 =S
34 + 25 =G
32 + 34 =R
14 + 29 =L
41 + 51 =U
14 + 19 =O
50 + 26 =F
0/13 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
71
19
32
83
84
13
19
39
66
75
19
66
75
65
19
29
W
71
65
66
75
84
32
57
65
39
19
13
77 - 6 =W
53 - 34 =E
39 - 7 =S
116 - 33 =C
94 - 10 =A
39 - 26 =R
79 - 40 =D
103 - 37 =T
102 - 27 =H
91 - 26 =I
63 - 34 =F
65 - 8 =P
0/12 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
26
65
27
140
30
20
130
A
26
100
30
A
26
14
70
36
25
100
65
22
100
130
36
100
36
20
100
Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ▢, 28, 30A
Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ▢, 70, 75B
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ▢, 30, 33R
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ▢, 150, 160O
Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, ▢, 35, 40W
Skip-count by 5s — fill the blank: 5, 10, 15, ▢, 25, 30N
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ▢, 140, 150H
Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ▢, 110, 120T
Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, ▢, 16, 18S
Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ▢, 75, 80L
Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ▢, 39, 42E
Skip-count by 5s — fill the blank: 5, 10, 15, 20, ▢, 30, 35F
Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ▢, 24, 26Y
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 + ▢ = 12
2 + ▢ = 10
2 + ▢ = 4
1 + ▢ = 13
1 + ▢ = 10
3 + ▢ = 8
8 + ▢ = 12
5 + ▢ = 6
1 + ▢ = 8
2 + ▢ = 12
4 + ▢ = 7
Step 2 — cross out the sentence with each answer
1.The villain swings in on a vine, then checks the compass.
2.The villain paddles up in a canoe, then blows a loud horn.
3.The villain floats in on a raft, then lights a torch to see.
4.The villain swings in on a vine, then digs with a shovel.
5.The villain floats in on a raft, then throws a lasso.
6.The villain floats in on a raft, then digs with a shovel.
7.The villain floats in on a raft, then blows a loud horn.
8.The villain swings in on a vine, then blows a loud horn.
9.The villain climbs down the cliff, then throws a lasso.
10.The villain rides up on a camel, then throws a lasso.
11.The villain paddles up in a canoe, then throws a lasso.
12.The villain paddles up in a canoe, then checks the compass.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Treasure Map
Culprit: Nina (paddles a canoe · throws a lasso · a girl · a brown hat · afraid of spiders)
- Clue 1 (Place value (tens & ones)): "THE VILLAIN CANNOT READ A COMPASS"What number has 1 ten and 2 ones? = 12 (T) · What number has 7 tens and 0 ones? = 70 (H) · What number has 8 tens and 9 ones? = 89 (E) · What number has 8 tens and 8 ones? = 88 (V) · What number has 1 ten and 1 one? = 11 (I) · What number has 6 tens and 2 ones? = 62 (L) · What number has 1 ten and 4 ones? = 14 (A) · What number has 4 tens and 9 ones? = 49 (N) · What number has 5 tens and 6 ones? = 56 (C) · What number has 7 tens and 4 ones? = 74 (O) · What number has 1 ten and 3 ones? = 13 (R) · What number has 6 tens and 4 ones? = 64 (D) · What number has 9 tens and 6 ones? = 96 (M) · What number has 4 tens and 5 ones? = 45 (P) · What number has 7 tens and 7 ones? = 77 (S)
- Clue 2 (Addition): "A WITNESS SAW A GIRL RUN OFF"29 + 27 = 56 (A) · 9 + 13 = 22 (W) · 8 + 19 = 27 (I) · 31 + 34 = 65 (T) · 24 + 22 = 46 (N) · 63 + 32 = 95 (E) · 22 + 10 = 32 (S) · 34 + 25 = 59 (G) · 32 + 34 = 66 (R) · 14 + 29 = 43 (L) · 41 + 51 = 92 (U) · 14 + 19 = 33 (O) · 50 + 26 = 76 (F)
- Clue 3 (Subtraction): "WE SCARED THE THIEF WITH A SPIDER"77 - 6 = 71 (W) · 53 - 34 = 19 (E) · 39 - 7 = 32 (S) · 116 - 33 = 83 (C) · 94 - 10 = 84 (A) · 39 - 26 = 13 (R) · 79 - 40 = 39 (D) · 103 - 37 = 66 (T) · 102 - 27 = 75 (H) · 91 - 26 = 65 (I) · 63 - 34 = 29 (F) · 65 - 8 = 57 (P)
- Clue 4 (Skip counting): "A BROWN HAT WAS LEFT BY THE TENT"Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ▢, 28, 30 = 26 (A) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ▢, 70, 75 = 65 (B) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ▢, 30, 33 = 27 (R) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ▢, 150, 160 = 140 (O) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, ▢, 35, 40 = 30 (W) · Skip-count by 5s — fill the blank: 5, 10, 15, ▢, 25, 30 = 20 (N) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ▢, 140, 150 = 130 (H) · Skip-count by 10s — fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ▢, 110, 120 = 100 (T) · Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, ▢, 16, 18 = 14 (S) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ▢, 75, 80 = 70 (L) · Skip-count by 3s — fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ▢, 39, 42 = 36 (E) · Skip-count by 5s — fill the blank: 5, 10, 15, 20, ▢, 30, 35 = 25 (F) · Skip-count by 2s — fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ▢, 24, 26 = 22 (Y)
- Clue 5 (Missing addends): surviving statement (box 11) → Nina6 + ▢ = 12 = 6 · 2 + ▢ = 10 = 8 · 2 + ▢ = 4 = 2 · 1 + ▢ = 13 = 12 · 1 + ▢ = 10 = 9 · 3 + ▢ = 8 = 5 · 8 + ▢ = 12 = 4 · 5 + ▢ = 6 = 1 · 1 + ▢ = 8 = 7 · 2 + ▢ = 12 = 10 · 4 + ▢ = 7 = 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 Missing Treasure Map — set in the jungle camp on Monkey Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects