Grade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision

The Lost Sapphire of Sun Temple

Someone swiped the Golden Sun Sapphire from the camp tent during the jungle expedition! Detective, examine the clues around the ruins to unmask the culprit.

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	Special Gear	Jungle Tool	Dominant Hand	Hat Style	Secret Fear
Phileas Fogg	Map Scroll	Torch	Left Handed	Red Bandana	Scared Of Snakes
Rick OConnell	Grappling Hook	Rope Ladder	Right Handed	Brown Fedora	Scared Of Bats
Carmen Sandiego	Brass Compass	Machete	Left Handed	Red Bandana	Scared Of Spiders
James Cook	Brass Compass	Rope Ladder	Right Handed	Brown Fedora	Scared Of Spiders
Diego Marquez	Decoder Ring	Torch	Right Handed	Pith Helmet	Scared Of Snakes
Flynn Rider	Signal Flare	Machete	Left Handed	Brown Fedora	Scared Of Spiders
Ernest Shackleton	Grappling Hook	Smoke Bomb	Left Handed	Brown Fedora	Scared Of Bats
Evie Carnahan	Grappling Hook	Torch	Left Handed	Brown Fedora	Scared Of Spiders
Tenzing Norgay	Signal Flare	Rope Ladder	Right Handed	Red Bandana	Scared Of Bats
Jacques Cousteau	Signal Flare	Smoke Bomb	Left Handed	Brown Fedora	Scared Of Bats
Roald Amundsen	Map Scroll	Torch	Right Handed	Red Bandana	Scared Of Spiders
Dora Marquez	Brass Compass	Machete	Left Handed	Brown Fedora	Scared Of Spiders
Marco Polo	Grappling Hook	Binoculars	Left Handed	Brown Fedora	Scared Of Spiders
Indiana Jones	Brass Compass	Rope Ladder	Right Handed	Brown Fedora	Scared Of Bats
Sacagawea	Brass Compass	Rope Ladder	Left Handed	Pith Helmet	Scared Of Spiders
Meriwether Lewis	Map Scroll	Smoke Bomb	Left Handed	Brown Fedora	Scared Of Spiders
Leif Erikson	Signal Flare	Torch	Left Handed	Red Bandana	Scared Of Snakes
Nathan Drake	Brass Compass	Rope Ladder	Right Handed	Pith Helmet	Scared Of Snakes
Jack Sparrow	Decoder Ring	Smoke Bomb	Left Handed	Red Bandana	Scared Of Bats
William Clark	Signal Flare	Machete	Right Handed	Pith Helmet	Scared Of Spiders
Edmund Hillary	Decoder Ring	Smoke Bomb	Left Handed	Brown Fedora	Scared Of Snakes

Clue 1

Rounding

The temple radar scanner only displays distances rounded to the nearest ten.

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

2900

1700

500

3000

130

2300

4300

130

230

370

9000

500

170

230

9000

2900

2000

4300

300

900

4300

2900

9000

300

2000

1700

Round 2,939 to the nearest hundredT

Round 132 to the nearest tenI

Round 870 to the nearest hundredY

Round 303 to the nearest hundredR

Round 370 to the nearest tenD

Round 3,056 to the nearest thousandV

Round 476 to the nearest hundredE

Round 1,684 to the nearest hundredH

Round 4,347 to the nearest hundredA

Round 228 to the nearest tenN

Round 9,238 to the nearest thousandO

Round 172 to the nearest tenS

Round 1,808 to the nearest thousandC

Round 2,321 to the nearest hundredL

0/14 letters found

Clue 2

Addition

We tallied up all the ancient gold coins found in the camp supply boxes.

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

9816

5736

6908

8781

2573

3717

4055

9816

6908

6843

2573

5802

9816

2659

5736

6908

2573

9816

5736

6908

6843

9610

2573

3058

6908

6843

4055

8781

6262

5399 + 4417 =W

1443 + 1130 =E

5031 + 4579 =L

4755 + 2153 =T

2540 + 3722 =D

3832 + 3011 =H

1767 + 892 =R

1567 + 1491 =F

2738 + 6043 =N

2105 + 1612 =S

1883 + 2172 =A

3013 + 2789 =M

2197 + 3539 =I

0/13 letters found

Clue 3

Subtraction

We compared the total energy crystals left in the generator after the theft.

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

2793

3139

1810

4712

7810

2793

1810

3139

6356

6288

5045

2301

5229

1772

3139

1810

6356

3139

3021

7810

4712

5045

7810

4712

2301

7810

2793

3139

5775

4927 - 2134 =H

10856 - 4568 =A

4291 - 2481 =R

7697 - 2985 =O

2188 - 416 =D

8940 - 3165 =M

7757 - 4618 =E

7555 - 2510 =S

6747 - 3726 =B

8294 - 1938 =W

6001 - 772 =I

3809 - 1508 =P

8223 - 413 =T

0/13 letters found

Clue 4

Multiplication facts (1-12)

The team arranged the jungle trail markers into equal rows to count them.

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

108

1 × 1 =A

9 × 3 =T

3 × 11 =B

9 × 7 =E

10 × 9 =K

2 × 1 =S

8 × 2 =O

10 × 7 =R

7 × 1 =N

3 × 7 =C

11 × 9 =D

6 × 6 =H

2 × 12 =F

6 × 7 =L

12 × 9 =W

0/15 letters found

Clue 5

Division facts (1-12) — the last clue

We split the rescue rations equally among all five camp tents.

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

36 ÷ 4 = ?

88 ÷ 8 = ?

70 ÷ 10 = ?

30 ÷ 5 = ?

16 ÷ 8 = ?

6 ÷ 6 = ?

48 ÷ 4 = ?

10 ÷ 2 = ?

72 ÷ 9 = ?

32 ÷ 8 = ?

120 ÷ 12 = ?

Step 2 — cross out the sentence with each answer

1.The villain decoded the secret temple symbols, then cleared vines with a sharp machete.

2.The villain consulted the ancient map scroll, then scouted ahead with binoculars.

3.The villain consulted the ancient map scroll, then vanished behind a thick smoke bomb.

4.The villain fired a signal flare into the sky, then lit up the tunnel with a bright torch.

5.The villain checked directions with a brass compass, then climbed down a rope ladder.

6.The villain consulted the ancient map scroll, then climbed down a rope ladder.

7.The villain swung across the pit with a grappling hook, then scouted ahead with binoculars.

8.The villain swung across the pit with a grappling hook, then cleared vines with a sharp machete.

9.The villain checked directions with a brass compass, then cleared vines with a sharp machete.

10.The villain consulted the ancient map scroll, then cleared vines with a sharp machete.

11.The villain fired a signal flare into the sky, then cleared vines with a sharp machete.

12.The villain decoded the secret temple symbols, then vanished behind a thick smoke bomb.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Lost Sapphire of Sun Temple

Culprit: Meriwether Lewis (Map Scroll · Smoke Bomb · Left Handed · Brown Fedora · Scared Of Spiders)

Clue 1 (Rounding): "THE VILLAIN DOES NOT CARRY A TORCH"
Round 2,939 to the nearest hundred = 2900 (T) · Round 132 to the nearest ten = 130 (I) · Round 870 to the nearest hundred = 900 (Y) · Round 303 to the nearest hundred = 300 (R) · Round 370 to the nearest ten = 370 (D) · Round 3,056 to the nearest thousand = 3000 (V) · Round 476 to the nearest hundred = 500 (E) · Round 1,684 to the nearest hundred = 1700 (H) · Round 4,347 to the nearest hundred = 4300 (A) · Round 228 to the nearest ten = 230 (N) · Round 9,238 to the nearest thousand = 9000 (O) · Round 172 to the nearest ten = 170 (S) · Round 1,808 to the nearest thousand = 2000 (C) · Round 2,321 to the nearest hundred = 2300 (L)
Clue 2 (Addition): "WITNESS SAW THEM WRITE WITH LEFT HAND"
5399 + 4417 = 9816 (W) · 1443 + 1130 = 2573 (E) · 5031 + 4579 = 9610 (L) · 4755 + 2153 = 6908 (T) · 2540 + 3722 = 6262 (D) · 3832 + 3011 = 6843 (H) · 1767 + 892 = 2659 (R) · 1567 + 1491 = 3058 (F) · 2738 + 6043 = 8781 (N) · 2105 + 1612 = 3717 (S) · 1883 + 2172 = 4055 (A) · 3013 + 2789 = 5802 (M) · 2197 + 3539 = 5736 (I)
Clue 3 (Subtraction): "HERO THREW A SPIDER WEB TO STOP THEM"
4927 - 2134 = 2793 (H) · 10856 - 4568 = 6288 (A) · 4291 - 2481 = 1810 (R) · 7697 - 2985 = 4712 (O) · 2188 - 416 = 1772 (D) · 8940 - 3165 = 5775 (M) · 7757 - 4618 = 3139 (E) · 7555 - 2510 = 5045 (S) · 6747 - 3726 = 3021 (B) · 8294 - 1938 = 6356 (W) · 6001 - 772 = 5229 (I) · 3809 - 1508 = 2301 (P) · 8223 - 413 = 7810 (T)
Clue 4 (Multiplication facts (1-12)): "A BROWN FEDORA WAS LEFT ON THE ROCK"
1 × 1 = 1 (A) · 9 × 3 = 27 (T) · 3 × 11 = 33 (B) · 9 × 7 = 63 (E) · 10 × 9 = 90 (K) · 2 × 1 = 2 (S) · 8 × 2 = 16 (O) · 10 × 7 = 70 (R) · 7 × 1 = 7 (N) · 3 × 7 = 21 (C) · 11 × 9 = 99 (D) · 6 × 6 = 36 (H) · 2 × 12 = 24 (F) · 6 × 7 = 42 (L) · 12 × 9 = 108 (W)
Clue 5 (Division facts (1-12)): surviving statement (box 3) → Meriwether Lewis
36 ÷ 4 = 9 · 88 ÷ 8 = 11 · 70 ÷ 10 = 7 · 30 ÷ 5 = 6 · 16 ÷ 8 = 2 · 6 ÷ 6 = 1 · 48 ÷ 4 = 12 · 10 ÷ 2 = 5 · 72 ÷ 9 = 8 · 32 ÷ 8 = 4 · 120 ÷ 12 = 10

About this mystery

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

More free printable math cases

4th grade worksheets Addition worksheets Subtraction worksheets Multiplication worksheets Division worksheets Rounding worksheets All worksheets →

The Great Championship Trophy Mystery

Grade 4

The Case of the Missing Star Crystal

Grade 4

The Mystery of the Rogue Bot

Grade 4

The Case of the Missing Diamond Trophy

Grade 4