Grade 2Reading: grades 3-4AdditionPlace valueSubtractionSkip countingMissing addends
The Case of the Golden Pineapple
Welcome to the Secret Jungle Club! The legendary Golden Pineapple has vanished from the Chief Explorer's cabin. A rogue explorer has taken it into the deep jungle. It is up to you to search for clues, use your clever math skills, and track down the culprit before they escape on the evening ferry!
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 | Jungle Tool | Secret Badge | Map Hand | Cap Color | Fear |
|---|---|---|---|---|---|
| Owen Vine | Laser Lasso | Quick Climb Badge | Right Handed | Neon Green Cap | Buzzing Bees |
| Sam River | Super Snorkel | Animal Whisper Badge | Right Handed | Bright Red Cap | Tickling Vines |
| Mia Canopy | Grappling Hook | Night Vision Badge | Right Handed | Sunny Yellow Cap | Squeaking Frogs |
| Eli Summit | Laser Lasso | Quick Climb Badge | Right Handed | Bright Red Cap | Tickling Vines |
| Ava Trail | Mud Boots | Map Master Badge | Right Handed | Sunny Yellow Cap | Squeaking Frogs |
| Max Tracker | Pocket Glider | Deep Dive Badge | Left Handed | Bright Red Cap | Tickling Vines |
| Nora Navigator | Grappling Hook | Deep Dive Badge | Right Handed | Bright Red Cap | Tickling Vines |
| Ivy Explorer | Mud Boots | Map Master Badge | Right Handed | Neon Green Cap | Tickling Vines |
| Zoe Scout | Mud Boots | Deep Dive Badge | Right Handed | Bright Red Cap | Squeaking Frogs |
| Cleo Canyon | Pocket Glider | Map Master Badge | Right Handed | Bright Red Cap | Squeaking Frogs |
| Cora Boulder | Laser Lasso | Deep Dive Badge | Right Handed | Bright Red Cap | Squeaking Frogs |
| Lily Fern | Mud Boots | Night Vision Badge | Left Handed | Bright Red Cap | Squeaking Frogs |
| Luke Safari | Pocket Glider | Map Master Badge | Left Handed | Neon Green Cap | Tickling Vines |
| Maya Meadow | Laser Lasso | Map Master Badge | Right Handed | Bright Red Cap | Tickling Vines |
| Amy Amazon | Laser Lasso | Night Vision Badge | Right Handed | Bright Red Cap | Tickling Vines |
| Toby Compass | Mud Boots | Quick Climb Badge | Left Handed | Neon Green Cap | Tickling Vines |
| Ben Falcon | Laser Lasso | Animal Whisper Badge | Left Handed | Neon Green Cap | Squeaking Frogs |
| Leo Jungle | Pocket Glider | Animal Whisper Badge | Left Handed | Sunny Yellow Cap | Tickling Vines |
| Jake Jaguar | Mud Boots | Deep Dive Badge | Right Handed | Sunny Yellow Cap | Tickling Vines |
| Zack Zephyr | Pocket Glider | Quick Climb Badge | Right Handed | Sunny Yellow Cap | Squeaking Frogs |
| Ruby Ranger | Grappling Hook | Night Vision Badge | Left Handed | Sunny Yellow Cap | Tickling Vines |
Clue 1
Addition
We need to pack enough fresh water for the jungle trip. Let us count the flasks on each shelf and add them together to get our final supply list.
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
45
22
90
T
45
22
78
90
92
75
73
90
62
48
73
T
45
22
82
35
90
T
45
22
90
53
26
78
52
57
52
59
78
51
71
71
82
75
23
90
27 + 18 =T
58 + 32 =E
34 + 14 =N
30 + 43 =O
31 + 31 =S
10 + 25 =V
7 + 19 =U
33 + 45 =I
29 + 30 =L
49 + 26 =D
53 + 29 =A
18 + 33 =M
24 + 47 =B
34 + 23 =K
14 + 9 =G
52 + 40 =F
9 + 13 =H
24 + 29 =Q
20 + 32 =C
0/19 letters found
Clue 2
Place value
The old stone door has a giant gold lock. To open it, we must find which number sits in the tens place on this dusty dial.
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
69
59
60
83
60
48
59
82
T
17
69
59
77
37
T
17
69
59
78
27
48
66
55
T
17
69
59
93
66
91
69
T
17
69
27
55
37
What number has 1 ten and 7 ones?T
What number has 9 tens and 3 ones?R
What number has 7 tens and 7 ones?L
What number has 9 tens and 1 one?G
What number has 8 tens and 3 ones?U
What number has 8 tens and 2 ones?C
What number has 6 tens and 0 ones?S
What number has 4 tens and 8 ones?P
What number has 5 tens and 5 ones?N
What number has 3 tens and 7 ones?D
What number has 7 tens and 8 ones?M
What number has 6 tens and 9 ones?H
What number has 6 tens and 6 ones?I
What number has 2 tens and 7 ones?A
What number has 5 tens and 9 ones?E
0/15 letters found
Clue 3
Subtraction
A cheeky monkey swiped a bunch of our trail mix bags! Subtract the stolen snacks from our pile to see how many we have left.
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
30
47
36
85
62
47
18
69
36
77
36
23
65
T
30
T
30
47
36
T
30
69
32
77
21
69
22
61
12
69
22
36
62
46 - 16 =T
69 - 7 =S
73 - 26 =H
115 - 30 =Y
94 - 29 =A
101 - 24 =K
39 - 17 =N
52 - 20 =C
98 - 29 =I
64 - 3 =G
39 - 18 =L
32 - 14 =R
61 - 25 =E
34 - 22 =V
49 - 26 =D
0/15 letters found
Clue 4
Skip counting
To cross the bubbling mud pits safely, we must follow the stone path by skipping numbers. Let us count by fives to find the next safe rock.
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
21
25
20
8
10
22
80
15
26
16
40
35
55
14
16
25
80
12
15
65
15
14
14
55
25
60
12
25
22
25
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27W
Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60I
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14U
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80S
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65H
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45G
Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18C
Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25A
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20R
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18T
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26N
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12O
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75P
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30B
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100D
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24F
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35E
0/17 letters found
Clue 5
Missing addends — the last clue
The ancient bridge demands ten heavy pineapples to stay balanced. We only have seven on the scale, so we must figure out how many more we need.
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
2 + ___ = 11
9 + ___ = 16
2 + ___ = 7
2 + ___ = 12
7 + ___ = 11
9 + ___ = 20
4 + ___ = 16
4 + ___ = 10
2 + ___ = 3
10 + ___ = 12
4 + ___ = 12
Step 2 — cross out the sentence with each answer
1.The villain stomped through the deep swamp in mud boots, then spotted the hidden path with a night vision badge.
2.The villain soared off the cliff with a pocket glider, then convinced the monkeys to help using an animal whisper badge.
3.The villain swung through the trees with a laser lasso, then spotted the hidden path with a night vision badge.
4.The villain soared off the cliff with a pocket glider, then retrieved the sunken key using a deep dive badge.
5.The villain scaled the ancient stone wall with a grappling hook, then retrieved the sunken key using a deep dive badge.
6.The villain soared off the cliff with a pocket glider, then navigated the maze using a map master badge.
7.The villain swung through the trees with a laser lasso, then navigated the maze using a map master badge.
8.The villain swam across the river using a super snorkel, then scrambled up the muddy hill with a quick climb badge.
9.The villain swam across the river using a super snorkel, then convinced the monkeys to help using an animal whisper badge.
10.The villain stomped through the deep swamp in mud boots, then convinced the monkeys to help using an animal whisper badge.
11.The villain stomped through the deep swamp in mud boots, then navigated the maze using a map master badge.
12.The villain scaled the ancient stone wall with a grappling hook, then convinced the monkeys to help using an animal whisper badge.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Golden Pineapple
Culprit: Amy Amazon (Laser Lasso · Night Vision Badge · Right Handed · Bright Red Cap · Tickling Vines)
- Clue 1 (Addition): "THE THIEF DOES NOT HAVE THE QUICK CLIMB BADGE"27 + 18 = 45 (T) · 58 + 32 = 90 (E) · 34 + 14 = 48 (N) · 30 + 43 = 73 (O) · 31 + 31 = 62 (S) · 10 + 25 = 35 (V) · 7 + 19 = 26 (U) · 33 + 45 = 78 (I) · 29 + 30 = 59 (L) · 49 + 26 = 75 (D) · 53 + 29 = 82 (A) · 18 + 33 = 51 (M) · 24 + 47 = 71 (B) · 34 + 23 = 57 (K) · 14 + 9 = 23 (G) · 52 + 40 = 92 (F) · 9 + 13 = 22 (H) · 24 + 29 = 53 (Q) · 20 + 32 = 52 (C)
- Clue 2 (Place value): "THE SUSPECT HELD THE MAP IN THE RIGHT HAND"What number has 1 ten and 7 ones? = 17 (T) · What number has 9 tens and 3 ones? = 93 (R) · What number has 7 tens and 7 ones? = 77 (L) · What number has 9 tens and 1 one? = 91 (G) · What number has 8 tens and 3 ones? = 83 (U) · What number has 8 tens and 2 ones? = 82 (C) · What number has 6 tens and 0 ones? = 60 (S) · What number has 4 tens and 8 ones? = 48 (P) · What number has 5 tens and 5 ones? = 55 (N) · What number has 3 tens and 7 ones? = 37 (D) · What number has 7 tens and 8 ones? = 78 (M) · What number has 6 tens and 9 ones? = 69 (H) · What number has 6 tens and 6 ones? = 66 (I) · What number has 2 tens and 7 ones? = 27 (A) · What number has 5 tens and 9 ones? = 59 (E)
- Clue 3 (Subtraction): "THEY SHRIEKED AT THE TICKLING VINES"46 - 16 = 30 (T) · 69 - 7 = 62 (S) · 73 - 26 = 47 (H) · 115 - 30 = 85 (Y) · 94 - 29 = 65 (A) · 101 - 24 = 77 (K) · 39 - 17 = 22 (N) · 52 - 20 = 32 (C) · 98 - 29 = 69 (I) · 64 - 3 = 61 (G) · 39 - 18 = 21 (L) · 32 - 14 = 18 (R) · 61 - 25 = 36 (E) · 34 - 22 = 12 (V) · 49 - 26 = 23 (D)
- Clue 4 (Skip counting): "WE FOUND A BRIGHT RED CAP AT THE SCENE"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (W) · Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60 = 40 (I) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (U) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80 = 60 (S) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (H) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (G) · Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18 = 12 (C) · Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25 = 15 (A) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (R) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (T) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (N) · Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (O) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (P) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (B) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100 = 80 (D) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24 = 20 (F) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (E)
- Clue 5 (Missing addends): surviving statement (box 3) → Amy Amazon2 + ___ = 11 = 9 · 9 + ___ = 16 = 7 · 2 + ___ = 7 = 5 · 2 + ___ = 12 = 10 · 7 + ___ = 11 = 4 · 9 + ___ = 20 = 11 · 4 + ___ = 16 = 12 · 4 + ___ = 10 = 6 · 2 + ___ = 3 = 1 · 10 + ___ = 12 = 2 · 4 + ___ = 12 = 8
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Addition, Place value, Subtraction, Skip counting, Missing addends
- Reading level
- grades 3-4
- Theme
- The Case of the Golden Pineapple — set in The Lost Jungle of Whispering Vines
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects