🔎 PrincessGrade 4Reading: grades 5-6RoundingAdditionSubtractionMultiplicationDivision

The Mystery of the Sunstone Tiara

The Grand Archduke's legendary Sunstone Tiara has vanished from the high tower! One of the princesses attending the Grand Ball is behind this. Use your detective skills to crack the code, solve the mystery, and save the kingdom!

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	magical ability	royal heirloom	signature wave	royal hairstyle	vulnerability
Guinevere	glass weaving	silver slipper	right handed wave	braided crown	chocolate truffles
Odette	flora growth	enchanted mirror	right handed wave	braided crown	peppermint tea
Tiana	beast speech	enchanted mirror	left handed wave	loose curls	peppermint tea
Penelope	glass weaving	silver slipper	left handed wave	high ponytail	chocolate truffles
Anastasia	flora growth	silver slipper	left handed wave	loose curls	clock chimes
Genevieve	glass weaving	velvet cape	right handed wave	braided crown	chocolate truffles
Cinderella	starlight glow	golden tiara	right handed wave	braided crown	peppermint tea
Ariel	starlight glow	enchanted mirror	left handed wave	high ponytail	peppermint tea
Cordelia	flora growth	silk fan	right handed wave	braided crown	chocolate truffles
Elena	starlight glow	silver slipper	right handed wave	braided crown	chocolate truffles
Belle	starlight glow	silk fan	left handed wave	high ponytail	peppermint tea
Beatrice	glass weaving	enchanted mirror	right handed wave	high ponytail	peppermint tea
Charlotte	flora growth	silk fan	right handed wave	braided crown	peppermint tea
Seraphina	flora growth	silver slipper	left handed wave	braided crown	peppermint tea
Jasmine	glass weaving	silver slipper	right handed wave	high ponytail	chocolate truffles
Fiona	glass weaving	silver slipper	left handed wave	high ponytail	peppermint tea
Rapunzel	beast speech	silver slipper	right handed wave	loose curls	clock chimes
Giselle	glass weaving	enchanted mirror	right handed wave	braided crown	chocolate truffles
Rosalind	glass weaving	golden tiara	left handed wave	high ponytail	chocolate truffles
Snow White	frost touch	velvet cape	left handed wave	loose curls	clock chimes
Victoria	starlight glow	silver slipper	left handed wave	braided crown	chocolate truffles

Clue 1

Rounding

The Royal Treasury's vault door requires an estimated security code. Let us look at the inventory log and round the gemstone count 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.

300

900

2300

290

200

2300

230

200

2300

430

200

300

900

5000

3700

2300

5000

3700

2300

110

3700

2300

300

9000

5000

370

2300

Round 331 to the nearest hundredT

Round 9,463 to the nearest thousandC

Round 190 to the nearest hundredO

Round 4,995 to the nearest thousandA

Round 865 to the nearest hundredH

Round 69 to the nearest tenN

Round 3,688 to the nearest hundredV

Round 369 to the nearest tenP

Round 2,340 to the nearest hundredE

Round 288 to the nearest tenF

Round 429 to the nearest tenS

Round 232 to the nearest tenD

Round 110 to the nearest tenL

0/13 letters found

Clue 2

Addition

To find the path of the intruder, we must tally up the total number of footprints left in the royal garden beds.

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

9121

5742

5621

8903

5589

2460

9659

5589

5392

8461

9659

8903

5621

2592

8461

5589

9121

5742

9121

5742

5621

5589

6284

5589

3738

5742

9121

5742

9659

5392

2592

3216 + 5905 =T

1598 + 862 =L

3262 + 2480 =H

2823 + 2569 =N

2159 + 3430 =I

1642 + 950 =D

3151 + 2470 =E

5016 + 4643 =A

5693 + 2768 =W

5703 + 3200 =V

4320 + 1964 =R

1877 + 1861 =G

0/12 letters found

Clue 3

Subtraction

Someone took a handful of pearls from the queen's necklace. We can find the thief's path by calculating how many pearls are missing.

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

6909

7621

6326

1698

4814

6326

4556

6909

4814

8757

6326

3697

6909

4814

6326

7663

6909

4597

7621

4814

4597

4814

2319

7663

6909

6326

6909

2617

7022

1698

2319

6326

4556

11180 - 4271 =T

4551 - 1934 =R

5671 - 3973 =F

5651 - 1095 =S

9236 - 1573 =A

5686 - 872 =O

10626 - 3604 =U

11487 - 3866 =H

8772 - 15 =P

2705 - 386 =L

7023 - 2426 =C

8263 - 4566 =D

9361 - 3035 =E

0/13 letters found

Clue 4

Multiplication facts (1-12)

The palace ball planners set out rows of exquisite glass slippers. Finding the total slippers in this grid will reveal the next clue.

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

1 × 2 =W

7 × 7 =R

8 × 9 =C

8 × 6 =F

1 × 3 =A

1 × 5 =H

11 × 1 =I

1 × 8 =N

8 × 4 =B

9 × 10 =U

3 × 8 =M

1 × 1 =O

3 × 7 =P

11 × 2 =E

9 × 5 =D

0/15 letters found

Clue 5

Division facts (1-12) — the last clue

The head chef needs to distribute the royal pastries evenly among the visiting princesses to unlock the final secret.

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

77 ÷ 7 = ?

72 ÷ 12 = ?

11 ÷ 11 = ?

21 ÷ 3 = ?

132 ÷ 11 = ?

6 ÷ 2 = ?

80 ÷ 10 = ?

44 ÷ 11 = ?

2 ÷ 1 = ?

15 ÷ 3 = ?

60 ÷ 6 = ?

Step 2 — cross out the sentence with each answer

1.The villain covered the Grand Ballroom in vibrant vines, then hid behind an elegant silk fan.

2.The villain froze the grand banquet hall in sparkling ice, then dropped a glowing golden tiara.

3.The villain lit up the castle towers with dazzling starlight, then dropped a glowing golden tiara.

4.The villain covered the Grand Ballroom in vibrant vines, then dropped a glowing golden tiara.

5.The villain commanded the palace bluebirds to carry the treasure, then swished a heavy velvet cape.

6.The villain spun the royal glass windows into a thick barrier, then shattered a sparkling silver slipper.

7.The villain lit up the castle towers with dazzling starlight, then swished a heavy velvet cape.

8.The villain spun the royal glass windows into a thick barrier, then hid behind an elegant silk fan.

9.The villain spun the royal glass windows into a thick barrier, then consulted a whispering enchanted mirror.

10.The villain covered the Grand Ballroom in vibrant vines, then consulted a whispering enchanted mirror.

11.The villain lit up the castle towers with dazzling starlight, then shattered a sparkling silver slipper.

12.The villain lit up the castle towers with dazzling starlight, then hid behind an elegant silk fan.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Mystery of the Sunstone Tiara

Culprit: Giselle (glass weaving · enchanted mirror · right handed wave · braided crown · chocolate truffles)

Clue 1 (Rounding): "THE FOE DOES NOT HAVE A VELVET CAPE"
Round 331 to the nearest hundred = 300 (T) · Round 9,463 to the nearest thousand = 9000 (C) · Round 190 to the nearest hundred = 200 (O) · Round 4,995 to the nearest thousand = 5000 (A) · Round 865 to the nearest hundred = 900 (H) · Round 69 to the nearest ten = 70 (N) · Round 3,688 to the nearest hundred = 3700 (V) · Round 369 to the nearest ten = 370 (P) · Round 2,340 to the nearest hundred = 2300 (E) · Round 288 to the nearest ten = 290 (F) · Round 429 to the nearest ten = 430 (S) · Round 232 to the nearest ten = 230 (D) · Round 110 to the nearest ten = 110 (L)
Clue 2 (Addition): "THE VILLAIN WAVED WITH THEIR RIGHT HAND"
3216 + 5905 = 9121 (T) · 1598 + 862 = 2460 (L) · 3262 + 2480 = 5742 (H) · 2823 + 2569 = 5392 (N) · 2159 + 3430 = 5589 (I) · 1642 + 950 = 2592 (D) · 3151 + 2470 = 5621 (E) · 5016 + 4643 = 9659 (A) · 5693 + 2768 = 8461 (W) · 5703 + 3200 = 8903 (V) · 4320 + 1964 = 6284 (R) · 1877 + 1861 = 3738 (G)
Clue 3 (Subtraction): "THE FOE STOPPED TO EAT CHOCOLATE TRUFFLES"
11180 - 4271 = 6909 (T) · 4551 - 1934 = 2617 (R) · 5671 - 3973 = 1698 (F) · 5651 - 1095 = 4556 (S) · 9236 - 1573 = 7663 (A) · 5686 - 872 = 4814 (O) · 10626 - 3604 = 7022 (U) · 11487 - 3866 = 7621 (H) · 8772 - 15 = 8757 (P) · 2705 - 386 = 2319 (L) · 7023 - 2426 = 4597 (C) · 8263 - 4566 = 3697 (D) · 9361 - 3035 = 6326 (E)
Clue 4 (Multiplication facts (1-12)): "WE FOUND A HAIRPIN FROM A BRAIDED CROWN"
1 × 2 = 2 (W) · 7 × 7 = 49 (R) · 8 × 9 = 72 (C) · 8 × 6 = 48 (F) · 1 × 3 = 3 (A) · 1 × 5 = 5 (H) · 11 × 1 = 11 (I) · 1 × 8 = 8 (N) · 8 × 4 = 32 (B) · 9 × 10 = 90 (U) · 3 × 8 = 24 (M) · 1 × 1 = 1 (O) · 3 × 7 = 21 (P) · 11 × 2 = 22 (E) · 9 × 5 = 45 (D)
Clue 5 (Division facts (1-12)): surviving statement (box 9) → Giselle
77 ÷ 7 = 11 · 72 ÷ 12 = 6 · 11 ÷ 11 = 1 · 21 ÷ 3 = 7 · 132 ÷ 11 = 12 · 6 ÷ 2 = 3 · 80 ÷ 10 = 8 · 44 ÷ 11 = 4 · 2 ÷ 1 = 2 · 15 ÷ 3 = 5 · 60 ÷ 6 = 10

About this mystery

Grade level: Grade 4 math
Math topics: Rounding, Addition, Subtraction, Multiplication, Division
Reading level: grades 5-6
Theme: The Mystery of the Sunstone Tiara — set in the Kingdom of Whispering Pines
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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