Grade 5Reading: grades 3-4MultiplicationRoundingAdditionSubtractionDivision

The Secret of the Sunken Temple

A mystery explorer sneaked into the Sunken Temple and snatched the ancient golden idol! Chief Archaeologist Vega needs your help to read the clues and unmask the culprit before they escape Isla Sol.

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	Gadget	Map Gear	Handedness	Bandana Color	Trap Vulnerability
Kai Thorne	Smoke Bomb	Gem Magnifier	Right Handed	Blue Bandana	Net Traps
Ben Harper	Glider Pack	Decoded Journal	Right Handed	Red Bandana	Pit Traps
Liam Hunter	Sonic Whistle	Spyglass Lens	Left Handed	Blue Bandana	Net Traps
Maya Cruz	Sonic Whistle	Decoded Journal	Left Handed	Red Bandana	Dart Traps
Jax Mercer	Grappling Hook	Golden Key	Left Handed	Gold Bandana	Net Traps
Ava Sterling	Smoke Bomb	Gem Magnifier	Left Handed	Blue Bandana	Pit Traps
Chloe Marsh	Glider Pack	Spyglass Lens	Left Handed	Gold Bandana	Dart Traps
Mia Santos	Flashlight Glove	Decoded Journal	Right Handed	Gold Bandana	Pit Traps
Eli Brooks	Sonic Whistle	Golden Key	Left Handed	Blue Bandana	Dart Traps
Cole Mason	Flashlight Glove	Decoded Journal	Left Handed	Blue Bandana	Dart Traps
Amy Chen	Flashlight Glove	Brass Compass	Right Handed	Red Bandana	Net Traps
Lily Evans	Grappling Hook	Golden Key	Left Handed	Blue Bandana	Net Traps
Ella Croft	Smoke Bomb	Decoded Journal	Left Handed	Blue Bandana	Net Traps
Noah Wilde	Smoke Bomb	Brass Compass	Left Handed	Gold Bandana	Net Traps
Luke West	Grappling Hook	Golden Key	Right Handed	Gold Bandana	Dart Traps
Zara Stone	Flashlight Glove	Spyglass Lens	Right Handed	Blue Bandana	Dart Traps
Nora Drake	Glider Pack	Brass Compass	Right Handed	Blue Bandana	Pit Traps
Owen Frost	Smoke Bomb	Spyglass Lens	Left Handed	Blue Bandana	Net Traps
Zoe Briggs	Glider Pack	Golden Key	Right Handed	Red Bandana	Net Traps
Finn Gale	Grappling Hook	Decoded Journal	Left Handed	Gold Bandana	Dart Traps
Ivy Rhodes	Smoke Bomb	Golden Key	Left Handed	Blue Bandana	Net Traps

Clue 1

Multiplication facts (1-12)

You find supply crates stacked in equal rows outside the temple gates.

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

144

100

144

7 × 10 =T

7 × 8 =I

8 × 3 =C

2 × 5 =S

12 × 12 =L

6 × 9 =D

9 × 9 =E

11 × 5 =R

10 × 8 =V

9 × 3 =U

8 × 12 =H

10 × 10 =N

9 × 5 =O

1 × 3 =A

7 × 4 =J

0/15 letters found

Clue 2

Rounding

The glowing stone scanner on the temple door only displays rounded numbers.

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

4300

2900

170

130

230

2300

130

1100

1300

700

130

4300

170

2000

1300

130

4300

2900

4300

2900

170

130

700

230

170

3000

4300

2900

2300

1100

500

Round 4,255 to the nearest hundredT

Round 452 to the nearest hundredD

Round 2,513 to the nearest thousandF

Round 127 to the nearest tenI

Round 169 to the nearest tenE

Round 2,297 to the nearest hundredA

Round 1,271 to the nearest hundredW

Round 682 to the nearest hundredR

Round 2,873 to the nearest hundredH

Round 2,373 to the nearest thousandS

Round 232 to the nearest tenL

Round 1,140 to the nearest hundredN

Round 66 to the nearest tenV

0/13 letters found

Clue 3

Addition

You gather up lost map scraps and add up the total count.

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

3780

4827

3892

3111

6528

3696

2332

6528

5524

3758

2332

8345

3780

8495

6528

6117

3892

7299

7368

3554

5524

3892

3780

8495

2332

6117

8345

2280 + 1500 =T

2233 + 2594 =H

3563 + 2965 =I

2466 + 3058 =N

5458 + 2887 =S

1581 + 1973 =Y

1672 + 2086 =W

1698 + 1998 =L

2572 + 4727 =D

769 + 1563 =A

4476 + 2892 =B

2305 + 1587 =E

2769 + 3348 =P

3168 + 5327 =R

2146 + 965 =V

0/15 letters found

Clue 4

Subtraction

You subtract the used torches to see how many lights remain.

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

4409

5749

4474

2037

5625

2758

4931

5749

1618

7099

1837

5749

4409

8329

6076

4409

8329

4409

4649

4409

6103

1618

1837

6736

4931

4409

4931

2758

1837

6103

6160

1837

8329

1837

8794 - 4385 =A

6906 - 4869 =I

10111 - 3951 =C

7068 - 332 =F

6337 - 4500 =E

5436 - 2678 =H

6414 - 311 =S

7516 - 2585 =T

5980 - 355 =G

8110 - 2034 =D

2199 - 581 =L

11559 - 4460 =U

8371 - 2622 =B

9681 - 1352 =N

6601 - 2127 =R

8442 - 3793 =W

0/16 letters found

Clue 5

Division facts (1-12) — the last clue

You divide the trail snacks equally among the expedition guides.

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

63 ÷ 7 = ?

80 ÷ 8 = ?

24 ÷ 2 = ?

48 ÷ 6 = ?

56 ÷ 8 = ?

22 ÷ 11 = ?

8 ÷ 8 = ?

121 ÷ 11 = ?

5 ÷ 1 = ?

24 ÷ 6 = ?

24 ÷ 8 = ?

Step 2 — cross out the sentence with each answer

1.The villain vanished in a cloud of smoke, then inspected the gem magnifier.

2.The villain vanished in a cloud of smoke, then checked the brass compass.

3.The villain scared away the guard bats, then inspected the gem magnifier.

4.The villain soared over the tree canopy, then read the decoded journal.

5.The villain vanished in a cloud of smoke, then read the decoded journal.

6.The villain vanished in a cloud of smoke, then turned the golden key.

7.The villain scared away the guard bats, then turned the golden key.

8.The villain lit up the dark tunnel, then read the decoded journal.

9.The villain vanished in a cloud of smoke, then adjusted the spyglass lens.

10.The villain scared away the guard bats, then adjusted the spyglass lens.

11.The villain lit up the dark tunnel, then adjusted the spyglass lens.

12.The villain swung across the chasm, then turned the golden key.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Secret of the Sunken Temple

Culprit: Ivy Rhodes (Smoke Bomb · Golden Key · Left Handed · Blue Bandana · Net Traps)

Clue 1 (Multiplication facts (1-12)): "THE VILLAIN DOES NOT USE A DECODED JOURNAL"
7 × 10 = 70 (T) · 7 × 8 = 56 (I) · 8 × 3 = 24 (C) · 2 × 5 = 10 (S) · 12 × 12 = 144 (L) · 6 × 9 = 54 (D) · 9 × 9 = 81 (E) · 11 × 5 = 55 (R) · 10 × 8 = 80 (V) · 9 × 3 = 27 (U) · 8 × 12 = 96 (H) · 10 × 10 = 100 (N) · 9 × 5 = 45 (O) · 1 × 3 = 3 (A) · 7 × 4 = 28 (J)
Clue 2 (Rounding): "THE VILLAIN WRITES WITH THEIR LEFT HAND"
Round 4,255 to the nearest hundred = 4300 (T) · Round 452 to the nearest hundred = 500 (D) · Round 2,513 to the nearest thousand = 3000 (F) · Round 127 to the nearest ten = 130 (I) · Round 169 to the nearest ten = 170 (E) · Round 2,297 to the nearest hundred = 2300 (A) · Round 1,271 to the nearest hundred = 1300 (W) · Round 682 to the nearest hundred = 700 (R) · Round 2,873 to the nearest hundred = 2900 (H) · Round 2,373 to the nearest thousand = 2000 (S) · Round 232 to the nearest ten = 230 (L) · Round 1,140 to the nearest hundred = 1100 (N) · Round 66 to the nearest ten = 70 (V)
Clue 3 (Addition): "THE VILLAIN WAS TRIPPED BY NET TRAPS"
2280 + 1500 = 3780 (T) · 2233 + 2594 = 4827 (H) · 3563 + 2965 = 6528 (I) · 2466 + 3058 = 5524 (N) · 5458 + 2887 = 8345 (S) · 1581 + 1973 = 3554 (Y) · 1672 + 2086 = 3758 (W) · 1698 + 1998 = 3696 (L) · 2572 + 4727 = 7299 (D) · 769 + 1563 = 2332 (A) · 4476 + 2892 = 7368 (B) · 2305 + 1587 = 3892 (E) · 2769 + 3348 = 6117 (P) · 3168 + 5327 = 8495 (R) · 2146 + 965 = 3111 (V)
Clue 4 (Subtraction): "A BRIGHT BLUE BANDANA WAS LEFT AT THE SCENE"
8794 - 4385 = 4409 (A) · 6906 - 4869 = 2037 (I) · 10111 - 3951 = 6160 (C) · 7068 - 332 = 6736 (F) · 6337 - 4500 = 1837 (E) · 5436 - 2678 = 2758 (H) · 6414 - 311 = 6103 (S) · 7516 - 2585 = 4931 (T) · 5980 - 355 = 5625 (G) · 8110 - 2034 = 6076 (D) · 2199 - 581 = 1618 (L) · 11559 - 4460 = 7099 (U) · 8371 - 2622 = 5749 (B) · 9681 - 1352 = 8329 (N) · 6601 - 2127 = 4474 (R) · 8442 - 3793 = 4649 (W)
Clue 5 (Division facts (1-12)): surviving statement (box 6) → Ivy Rhodes
63 ÷ 7 = 9 · 80 ÷ 8 = 10 · 24 ÷ 2 = 12 · 48 ÷ 6 = 8 · 56 ÷ 8 = 7 · 22 ÷ 11 = 2 · 8 ÷ 8 = 1 · 121 ÷ 11 = 11 · 5 ÷ 1 = 5 · 24 ÷ 6 = 4 · 24 ÷ 8 = 3

About this mystery

Grade level: Grade 5 math
Math topics: Multiplication, Rounding, Addition, Subtraction, Division
Reading level: grades 3-4
Theme: The Secret of the Sunken Temple — set in Sunken Temple of Isla Sol
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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