Grade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision

The Mystery of the Sunken Jungle Temple

A sneaky phantom explorer snuck into the jungle expedition camp and snatched the golden sun compass! Detective, search for clues around the ruins to catch the culprit before they escape.

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	Primary Tool	Secret Gear	Dominant Hand	Hair Color	Secret Weakness
Gideon Ross	Signal Flare	Torch Light	Left Handed	Chestnut Brown	Bright Flashes
Otis Miller	Brass Compass	Rope Ladder	Right Handed	Chestnut Brown	Loud Whistles
Piper Vance	Signal Flare	Smoke Bomb	Right Handed	Amber Gold	Bright Flashes
Jonah Knight	Grappling Hook	Spyglass	Right Handed	Amber Gold	Itchy Powder
Chloe Park	Grappling Hook	Rope Ladder	Right Handed	Amber Gold	Bright Flashes
Nora Finch	Bronze Machete	Spyglass	Left Handed	Amber Gold	Bright Flashes
Bruno Vance	Brass Compass	Rope Ladder	Right Handed	Amber Gold	Bright Flashes
Daphne Moon	Bronze Machete	Smoke Bomb	Left Handed	Amber Gold	Itchy Powder
Hugo Sterling	Signal Flare	Spyglass	Left Handed	Amber Gold	Bright Flashes
Zoe Rivers	Grappling Hook	Torch Light	Left Handed	Amber Gold	Loud Whistles
Sienna West	Decoder Ring	Torch Light	Right Handed	Chestnut Brown	Loud Whistles
Professor Plum	Decoder Ring	Torch Light	Left Handed	Amber Gold	Loud Whistles
Leo Vance	Bronze Machete	Glider Wings	Right Handed	Amber Gold	Bright Flashes
Ezra Blake	Signal Flare	Glider Wings	Left Handed	Raven Black	Loud Whistles
Captain Maya	Bronze Machete	Rope Ladder	Left Handed	Amber Gold	Bright Flashes
Jasper Stone	Decoder Ring	Smoke Bomb	Right Handed	Amber Gold	Bright Flashes
Ruby Cruz	Grappling Hook	Spyglass	Left Handed	Amber Gold	Itchy Powder
Ivy Chen	Decoder Ring	Spyglass	Right Handed	Amber Gold	Loud Whistles
Felix Drake	Grappling Hook	Rope Ladder	Left Handed	Raven Black	Bright Flashes
Evelyn Reed	Bronze Machete	Glider Wings	Right Handed	Chestnut Brown	Bright Flashes
Tess Morgan	Decoder Ring	Spyglass	Right Handed	Amber Gold	Bright Flashes

Clue 1

Rounding

The ancient temple radar display rounds distance measurements to the nearest hundred.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

3000

110

430

2000

200

9000

200

1700

300

900

430

130

1700

900

3000

3700

130

430

9000

900

700

430

9000

300

430

Round 2,659 to the nearest thousandT

Round 1,892 to the nearest thousandV

Round 197 to the nearest hundredI

Round 3,651 to the nearest hundredU

Round 114 to the nearest tenH

Round 92 to the nearest tenR

Round 922 to the nearest hundredO

Round 8,579 to the nearest thousandA

Round 434 to the nearest tenE

Round 30 to the nearest tenL

Round 1,715 to the nearest hundredN

Round 681 to the nearest hundredP

Round 339 to the nearest hundredD

Round 126 to the nearest tenS

0/14 letters found

Clue 2

Addition

The lead explorer totaled all the gear containers gathered in the jungle camp.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

4204

3058

9385

7497

5390

7497

8926

9385

5109

4204

8733

9385

3860

4204

4385

8329

6872

6157

3058

4204

3058

4385

2991

5636

9385

5636

8926

8329

6872

2991

4204

2683 + 1521 =T

1579 + 2806 =A

1386 + 1605 =N

3198 + 6187 =E

3364 + 4965 =R

5145 + 3588 =L

1938 + 3698 =D

4260 + 3237 =S

2110 + 3280 =U

4986 + 3940 =P

3088 + 3069 =G

2606 + 1254 =F

4131 + 2741 =I

1825 + 1233 =H

2859 + 2250 =C

0/15 letters found

Clue 3

Subtraction

The detective checked how many trail markers remained along the river after the storm.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

6688

8560

7656

3458

2022

6280

5185

2765

4346

6688

6619

6280

7656

3512

6619

2765

2376

7787

6379

2765

4346

7503

8560

6688

6619

6280

3089

7752

8560

7656

7752

9962 - 3274 =T

5426 - 2661 =R

3936 - 424 =D

3844 - 1468 =O

7065 - 785 =L

10450 - 2794 =E

5696 - 1350 =I

7920 - 133 =M

12734 - 4982 =S

11103 - 4484 =F

10246 - 3867 =B

2200 - 178 =U

4963 - 1505 =C

7870 - 4781 =A

7923 - 2738 =P

8695 - 1192 =G

9596 - 1036 =H

0/17 letters found

Clue 4

Multiplication facts (1-12)

The camp cook packed matching rows of energy snacks into each expedition pack.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

120

108

121

132

121

2 × 7 =A

11 × 12 =C

10 × 8 =F

9 × 6 =O

9 × 2 =L

1 × 7 =S

3 × 10 =I

12 × 10 =R

1 × 9 =H

11 × 11 =N

9 × 3 =M

1 × 5 =W

3 × 7 =G

4 × 7 =D

5 × 9 =T

2 × 1 =E

9 × 12 =U

4 × 10 =B

0/18 letters found

Clue 5

Division facts (1-12) — the last clue

The team divided the wooden torches equally among all the search groups.

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

49 ÷ 7 = ?

55 ÷ 5 = ?

21 ÷ 7 = ?

72 ÷ 6 = ?

60 ÷ 6 = ?

12 ÷ 2 = ?

40 ÷ 5 = ?

2 ÷ 2 = ?

9 ÷ 1 = ?

10 ÷ 5 = ?

15 ÷ 3 = ?

Step 2 — cross out the sentence with each answer

1.The villain consulted a brass compass, then scouted ahead with a spyglass.

2.The villain used a grappling hook, then escaped with glider wings.

3.The villain fired a signal flare, then dropped a smoke bomb.

4.The villain aligned the decoder ring, then dropped a smoke bomb.

5.The villain consulted a brass compass, then climbed away on a rope ladder.

6.The villain used a grappling hook, then lit the path with a torch.

7.The villain cleared vines with a machete, then escaped with glider wings.

8.The villain aligned the decoder ring, then lit the path with a torch.

9.The villain aligned the decoder ring, then climbed away on a rope ladder.

10.The villain cleared vines with a machete, then climbed away on a rope ladder.

11.The villain aligned the decoder ring, then scouted ahead with a spyglass.

12.The villain cleared vines with a machete, then scouted ahead with a spyglass.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Mystery of the Sunken Jungle Temple

Culprit: Jasper Stone (Decoder Ring · Smoke Bomb · Right Handed · Amber Gold · Bright Flashes)

Clue 1 (Rounding): "THE VILLAIN DOES NOT USE A ROPE LADDER"
Round 2,659 to the nearest thousand = 3000 (T) · Round 1,892 to the nearest thousand = 2000 (V) · Round 197 to the nearest hundred = 200 (I) · Round 3,651 to the nearest hundred = 3700 (U) · Round 114 to the nearest ten = 110 (H) · Round 92 to the nearest ten = 90 (R) · Round 922 to the nearest hundred = 900 (O) · Round 8,579 to the nearest thousand = 9000 (A) · Round 434 to the nearest ten = 430 (E) · Round 30 to the nearest ten = 30 (L) · Round 1,715 to the nearest hundred = 1700 (N) · Round 681 to the nearest hundred = 700 (P) · Round 339 to the nearest hundred = 300 (D) · Round 126 to the nearest ten = 130 (S)
Clue 2 (Addition): "THE SUSPECT LEFT A RIGHT HANDED PRINT"
2683 + 1521 = 4204 (T) · 1579 + 2806 = 4385 (A) · 1386 + 1605 = 2991 (N) · 3198 + 6187 = 9385 (E) · 3364 + 4965 = 8329 (R) · 5145 + 3588 = 8733 (L) · 1938 + 3698 = 5636 (D) · 4260 + 3237 = 7497 (S) · 2110 + 3280 = 5390 (U) · 4986 + 3940 = 8926 (P) · 3088 + 3069 = 6157 (G) · 2606 + 1254 = 3860 (F) · 4131 + 2741 = 6872 (I) · 1825 + 1233 = 3058 (H) · 2859 + 2250 = 5109 (C)
Clue 3 (Subtraction): "THE CULPRIT FLED FROM BRIGHT FLASHES"
9962 - 3274 = 6688 (T) · 5426 - 2661 = 2765 (R) · 3936 - 424 = 3512 (D) · 3844 - 1468 = 2376 (O) · 7065 - 785 = 6280 (L) · 10450 - 2794 = 7656 (E) · 5696 - 1350 = 4346 (I) · 7920 - 133 = 7787 (M) · 12734 - 4982 = 7752 (S) · 11103 - 4484 = 6619 (F) · 10246 - 3867 = 6379 (B) · 2200 - 178 = 2022 (U) · 4963 - 1505 = 3458 (C) · 7870 - 4781 = 3089 (A) · 7923 - 2738 = 5185 (P) · 8695 - 1192 = 7503 (G) · 9596 - 1036 = 8560 (H)
Clue 4 (Multiplication facts (1-12)): "AMBER GOLD HAIR WAS FOUND AT THE SCENE"
2 × 7 = 14 (A) · 11 × 12 = 132 (C) · 10 × 8 = 80 (F) · 9 × 6 = 54 (O) · 9 × 2 = 18 (L) · 1 × 7 = 7 (S) · 3 × 10 = 30 (I) · 12 × 10 = 120 (R) · 1 × 9 = 9 (H) · 11 × 11 = 121 (N) · 9 × 3 = 27 (M) · 1 × 5 = 5 (W) · 3 × 7 = 21 (G) · 4 × 7 = 28 (D) · 5 × 9 = 45 (T) · 2 × 1 = 2 (E) · 9 × 12 = 108 (U) · 4 × 10 = 40 (B)
Clue 5 (Division facts (1-12)): surviving statement (box 4) → Jasper Stone
49 ÷ 7 = 7 · 55 ÷ 5 = 11 · 21 ÷ 7 = 3 · 72 ÷ 6 = 12 · 60 ÷ 6 = 10 · 12 ÷ 2 = 6 · 40 ÷ 5 = 8 · 2 ÷ 2 = 1 · 9 ÷ 1 = 9 · 10 ÷ 5 = 2 · 15 ÷ 3 = 5

About this mystery

Grade level: Grade 4 math
Math topics: Rounding, Addition, Subtraction, Multiplication, Division
Reading level: grades 3-4
Theme: The Mystery of the Sunken Jungle Temple — set in The Whispering Jungle Ruins
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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