Grade 3Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Isla Verde Golden Pineapple Mystery
The Golden Pineapple has been swiped from the Isla Verde camp! The rogue explorer left a trail of muddy bootprints and tricky traps. We need to crack the clues, find out who did it, and recover the artifact before they sail away!
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 Gear | Escape Vehicle | Map Hand | Explorer Hat | Fear |
|---|---|---|---|---|---|
| Ruby Jewel | climbing boots | mini helicopter | right handed | pith helmet | scared of spiders |
| Gemma Stone | grappling hook | bamboo raft | right handed | fedora hat | scared of spiders |
| Leo Finder | super flashlight | speedy airboat | left handed | fedora hat | scared of spiders |
| Zack Compass | machete tool | mini helicopter | right handed | fedora hat | scared of snakes |
| Maya Temple | climbing boots | bumpy dirtbike | right handed | pith helmet | scared of snakes |
| Lara Croft | super flashlight | zipline harness | left handed | fedora hat | scared of bats |
| Kiara Scout | climbing boots | zipline harness | left handed | fedora hat | scared of spiders |
| Steve Irwin | grappling hook | mini helicopter | left handed | safari cap | scared of spiders |
| Sven Tracker | machete tool | speedy airboat | right handed | safari cap | scared of spiders |
| Jack Hunter | rope ladder | bumpy dirtbike | right handed | pith helmet | scared of snakes |
| Penny Finder | grappling hook | bamboo raft | right handed | safari cap | scared of bats |
| Rex Fossil | machete tool | bumpy dirtbike | right handed | pith helmet | scared of spiders |
| Ben Trailblazer | grappling hook | bamboo raft | right handed | pith helmet | scared of spiders |
| Owen Tracker | super flashlight | speedy airboat | right handed | pith helmet | scared of bats |
| Diego Marquez | climbing boots | bumpy dirtbike | left handed | safari cap | scared of snakes |
| Tess Explorer | rope ladder | bamboo raft | right handed | safari cap | scared of snakes |
| Zoe Mapmaker | grappling hook | zipline harness | right handed | pith helmet | scared of snakes |
| Indiana Jones | climbing boots | bumpy dirtbike | left handed | pith helmet | scared of spiders |
| Dora Marquez | machete tool | bamboo raft | right handed | pith helmet | scared of spiders |
| Max Ranger | machete tool | zipline harness | right handed | pith helmet | scared of spiders |
| Barnaby Jones | climbing boots | zipline harness | left handed | safari cap | scared of snakes |
Clue 1
Rounding
We found an old digital compass dropped near the temple gates. The screen is cracked, so it only shows rounded directions to the nearest ten yards. Rounding these distances gives us our first clue about the getaway vehicle.
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
600
2000
70
50
300
200
9000
70
80
5000
80
7000
300
T
600
9000
30
70
6000
800
5000
7000
5000
2000
70
20
5000
3000
300
40
T
600
70
50
Round 566 to the nearest hundredT
Round 50 to the nearest tenR
Round 44 to the nearest tenP
Round 5,750 to the nearest thousandA
Round 8,519 to the nearest thousandU
Round 76 to the nearest tenD
Round 69 to the nearest tenE
Round 30 to the nearest tenS
Round 7,107 to the nearest thousandN
Round 215 to the nearest hundredG
Round 344 to the nearest hundredO
Round 3,268 to the nearest thousandC
Round 2,386 to the nearest thousandH
Round 19 to the nearest tenL
Round 4,633 to the nearest thousandI
Round 829 to the nearest hundredM
0/16 letters found
Clue 2
Addition
The team finds a messy camp table with scattered supplies. If we add up all the juice boxes and energy bars left behind, we can figure out what hand the thief used to grab the map.
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
299
429
585
816
448
766
T
299
491
984
323
369
260
323
766
429
585
980
816
856
763
T
299
429
585
968
856
331
429
T
299
429
323
763
816
130 + 169 =T
248 + 121 =P
559 + 257 =D
309 + 659 =R
401 + 455 =I
184 + 245 =H
392 + 592 =M
323 + 168 =Y
302 + 464 =S
121 + 210 =G
436 + 544 =L
277 + 308 =E
327 + 436 =N
175 + 148 =A
162 + 286 =U
81 + 179 =W
0/16 letters found
Clue 3
Subtraction
We inspect the supply crate near the ancient ruins. Subtracting the broken tools from the total tells us what creature made the villain run away in fear.
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
861
176
460
898
542
692
383
692
672
692
898
560
542
522
101
692
T
861
582
383
898
701
348
582
216
460
542
672
460
856
936 - 75 =T
296 - 80 =D
714 - 42 =W
546 - 163 =N
1165 - 309 =B
974 - 392 =I
873 - 331 =R
1039 - 347 =A
689 - 129 =F
1023 - 322 =S
525 - 349 =H
918 - 396 =O
563 - 215 =P
395 - 294 =M
518 - 58 =E
1131 - 233 =Y
0/16 letters found
Clue 4
Multiplication facts (1-12)
Deep in the dark cave, we find rows of ancient statues. Counting the statues in each row and multiplying them reveals a scrap of fabric from the thief's hat.
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
60
44
108
8
45
81
110
132
22
132
81
77
27
22
48
48
44
100
64
44
22
25
22
96
132
77
6 × 10 =W
2 × 11 =T
11 × 12 =A
8 × 8 =M
11 × 4 =E
12 × 9 =F
10 × 10 =L
11 × 10 =D
9 × 5 =U
9 × 9 =N
4 × 12 =H
4 × 2 =O
9 × 3 =I
11 × 7 =P
5 × 5 =S
12 × 8 =R
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
To open the heavy stone door, we have to share our shiny river stones equally among the team. Dividing them up gives us the final secret to crack the case.
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
16 ÷ 4 = ?
16 ÷ 2 = ?
60 ÷ 12 = ?
36 ÷ 12 = ?
11 ÷ 1 = ?
90 ÷ 10 = ?
5 ÷ 5 = ?
84 ÷ 12 = ?
48 ÷ 4 = ?
54 ÷ 9 = ?
18 ÷ 9 = ?
Step 2 — cross out the sentence with each answer
1.The villain climbed down into the deep ravine using a rope ladder, then slid across the canyon on a zipline harness.
2.The villain swung across the muddy river with a grappling hook, then slid across the canyon on a zipline harness.
3.The villain scaled the slippery temple wall in climbing boots, then roared away through the mud on a bumpy dirtbike.
4.The villain chopped through thick jungle vines with a machete tool, then slid across the canyon on a zipline harness.
5.The villain swung across the muddy river with a grappling hook, then paddled down the rushing creek on a bamboo raft.
6.The villain swung across the muddy river with a grappling hook, then sped down the river on a speedy airboat.
7.The villain climbed down into the deep ravine using a rope ladder, then sped down the river on a speedy airboat.
8.The villain chopped through thick jungle vines with a machete tool, then paddled down the rushing creek on a bamboo raft.
9.The villain scaled the slippery temple wall in climbing boots, then slid across the canyon on a zipline harness.
10.The villain chopped through thick jungle vines with a machete tool, then roared away through the mud on a bumpy dirtbike.
11.The villain searched the dark stone tunnel with a super flashlight, then roared away through the mud on a bumpy dirtbike.
12.The villain scaled the slippery temple wall in climbing boots, then paddled down the rushing creek on a bamboo raft.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Isla Verde Golden Pineapple Mystery
Culprit: Rex Fossil (machete tool · bumpy dirtbike · right handed · pith helmet · scared of spiders)
- Clue 1 (Rounding): "THE ROGUE DID NOT USE A MINI HELICOPTER"Round 566 to the nearest hundred = 600 (T) · Round 50 to the nearest ten = 50 (R) · Round 44 to the nearest ten = 40 (P) · Round 5,750 to the nearest thousand = 6000 (A) · Round 8,519 to the nearest thousand = 9000 (U) · Round 76 to the nearest ten = 80 (D) · Round 69 to the nearest ten = 70 (E) · Round 30 to the nearest ten = 30 (S) · Round 7,107 to the nearest thousand = 7000 (N) · Round 215 to the nearest hundred = 200 (G) · Round 344 to the nearest hundred = 300 (O) · Round 3,268 to the nearest thousand = 3000 (C) · Round 2,386 to the nearest thousand = 2000 (H) · Round 19 to the nearest ten = 20 (L) · Round 4,633 to the nearest thousand = 5000 (I) · Round 829 to the nearest hundred = 800 (M)
- Clue 2 (Addition): "THE DUSTY MAP WAS HELD IN THE RIGHT HAND"130 + 169 = 299 (T) · 248 + 121 = 369 (P) · 559 + 257 = 816 (D) · 309 + 659 = 968 (R) · 401 + 455 = 856 (I) · 184 + 245 = 429 (H) · 392 + 592 = 984 (M) · 323 + 168 = 491 (Y) · 302 + 464 = 766 (S) · 121 + 210 = 331 (G) · 436 + 544 = 980 (L) · 277 + 308 = 585 (E) · 327 + 436 = 763 (N) · 175 + 148 = 323 (A) · 162 + 286 = 448 (U) · 81 + 179 = 260 (W)
- Clue 3 (Subtraction): "THEY RAN AWAY FROM A TINY SPIDERWEB"936 - 75 = 861 (T) · 296 - 80 = 216 (D) · 714 - 42 = 672 (W) · 546 - 163 = 383 (N) · 1165 - 309 = 856 (B) · 974 - 392 = 582 (I) · 873 - 331 = 542 (R) · 1039 - 347 = 692 (A) · 689 - 129 = 560 (F) · 1023 - 322 = 701 (S) · 525 - 349 = 176 (H) · 918 - 396 = 522 (O) · 563 - 215 = 348 (P) · 395 - 294 = 101 (M) · 518 - 58 = 460 (E) · 1131 - 233 = 898 (Y)
- Clue 4 (Multiplication facts (1-12)): "WE FOUND A TAN PITH HELMET STRAP"6 × 10 = 60 (W) · 2 × 11 = 22 (T) · 11 × 12 = 132 (A) · 8 × 8 = 64 (M) · 11 × 4 = 44 (E) · 12 × 9 = 108 (F) · 10 × 10 = 100 (L) · 11 × 10 = 110 (D) · 9 × 5 = 45 (U) · 9 × 9 = 81 (N) · 4 × 12 = 48 (H) · 4 × 2 = 8 (O) · 9 × 3 = 27 (I) · 11 × 7 = 77 (P) · 5 × 5 = 25 (S) · 12 × 8 = 96 (R)
- Clue 5 (Division facts (1-12)): surviving statement (box 10) → Rex Fossil16 ÷ 4 = 4 · 16 ÷ 2 = 8 · 60 ÷ 12 = 5 · 36 ÷ 12 = 3 · 11 ÷ 1 = 11 · 90 ÷ 10 = 9 · 5 ÷ 5 = 1 · 84 ÷ 12 = 7 · 48 ÷ 4 = 12 · 54 ÷ 9 = 6 · 18 ÷ 9 = 2
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Isla Verde Golden Pineapple Mystery — set in Isla Verde Ruins
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects