🔎 JapanGrade 4Reading: grades 3-4Place valueRoundingAdditionSubtractionDivision

The Tokyo Toy Tower Caper

A sneaky villain has swiped the Golden Robo-Kitty from the highest room of the Tokyo Toy Tower! The museum curator is super sad. We must search the bright neon rooms and use our detective skills to find who took it.

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	Neon Gadget	Origami Skill	Chopstick Hand	Anime Hair Dye	Distraction
Miyu	Sonic Toy Whistle	Paper Kabuto Helmet	Left Chopstick Hand	Bright Blue Ponytail	Cute Fluffy Cat Toy
Shin	Sonic Toy Whistle	Paper Shuriken Throw	Right Chopstick Hand	Bright Blue Ponytail	Loud Karaoke Singing
Kenji	Robo Beetle Remote	Paper Shuriken Throw	Left Chopstick Hand	Neon Green Spikes	Cold Matcha Ice Cream
Taiga	Glow Paint Blaster	Paper Frog Jumper	Left Chopstick Hand	Neon Green Spikes	Cute Fluffy Cat Toy
Yua	Laser Jump Rope	Paper Dragon Shield	Right Chopstick Hand	Spiky Pink Hair	Cold Matcha Ice Cream
Hana	Super Magnet Glove	Paper Kabuto Helmet	Left Chopstick Hand	Spiky Pink Hair	Cute Fluffy Cat Toy
Mei	Glow Paint Blaster	Paper Dragon Shield	Right Chopstick Hand	Neon Green Spikes	Cute Fluffy Cat Toy
Nanami	Super Magnet Glove	Paper Shuriken Throw	Right Chopstick Hand	Neon Green Spikes	Cute Fluffy Cat Toy
Sakura	Super Magnet Glove	Paper Crane Flyer	Right Chopstick Hand	Spiky Pink Hair	Cute Fluffy Cat Toy
Yuki	Super Magnet Glove	Paper Frog Jumper	Right Chopstick Hand	Neon Green Spikes	Loud Karaoke Singing
Yuto	Super Magnet Glove	Paper Crane Flyer	Right Chopstick Hand	Neon Green Spikes	Cute Fluffy Cat Toy
Hiro	Robo Beetle Remote	Paper Shuriken Throw	Right Chopstick Hand	Neon Green Spikes	Cute Fluffy Cat Toy
Himari	Glow Paint Blaster	Paper Kabuto Helmet	Right Chopstick Hand	Bright Blue Ponytail	Loud Karaoke Singing
Sora	Glow Paint Blaster	Paper Kabuto Helmet	Left Chopstick Hand	Bright Blue Ponytail	Loud Karaoke Singing
Manami	Laser Jump Rope	Paper Dragon Shield	Left Chopstick Hand	Bright Blue Ponytail	Cute Fluffy Cat Toy
Aoi	Sonic Toy Whistle	Paper Dragon Shield	Right Chopstick Hand	Bright Blue Ponytail	Cute Fluffy Cat Toy
Riku	Sonic Toy Whistle	Paper Frog Jumper	Left Chopstick Hand	Neon Green Spikes	Cute Fluffy Cat Toy
Akio	Sonic Toy Whistle	Paper Frog Jumper	Right Chopstick Hand	Neon Green Spikes	Loud Karaoke Singing
Ren	Laser Jump Rope	Paper Frog Jumper	Right Chopstick Hand	Bright Blue Ponytail	Loud Karaoke Singing
Koki	Super Magnet Glove	Paper Frog Jumper	Left Chopstick Hand	Bright Blue Ponytail	Cold Matcha Ice Cream
Daiki	Super Magnet Glove	Paper Kabuto Helmet	Right Chopstick Hand	Neon Green Spikes	Cute Fluffy Cat Toy

Clue 1

Place value

We look at the neon scoreboard on the toy wall. The digits are scrambled, but finding the value of the digit in the hundreds place unlocks our first hint.

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

100

8000

100

8000

1000

900

7000

8000

400

3000

400

700

900

8000

2000

3000

What is the value of the 1 in 120?T

What is the value of the 4 in 3,146?S

What is the value of the 1 in 1,550?F

What is the value of the 7 in 7,109?P

What is the value of the 5 in 6,253?A

What is the value of the 7 in 8,973?I

What is the value of the 9 in 3,926?O

What is the value of the 2 in 1,321?H

What is the value of the 4 in 7,472?R

What is the value of the 8 in 8,303?E

What is the value of the 3 in 434?N

What is the value of the 2 in 82,449?L

What is the value of the 3 in 93,402?D

What is the value of the 7 in 5,716?G

0/14 letters found

Clue 2

Rounding

A glowing radar screen tracks how fast the thief fled. The screen only shows speeds rounded to the nearest ten, giving us a clear estimate of where they ran.

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

1700

2000

1700

2000

290

300

2000

130

1300

1700

2000

170

1700

290

2300

170

290

4300

500

290

9000

2000

1700

2000

3000

4300

1300

Round 1,722 to the nearest hundredT

Round 4,258 to the nearest hundredN

Round 130 to the nearest tenL

Round 3,440 to the nearest thousandA

Round 19 to the nearest tenE

Round 275 to the nearest hundredF

Round 86 to the nearest tenC

Round 9,425 to the nearest thousandG

Round 166 to the nearest tenS

Round 286 to the nearest tenI

Round 502 to the nearest hundredR

Round 2,340 to the nearest hundredK

Round 1,514 to the nearest thousandH

Round 1,260 to the nearest hundredD

0/14 letters found

Clue 3

Addition

We count the empty toy boxes scattered across the room. Adding the different piles together tells us exactly how many gadgets the thief grabbed.

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

6436

4719

4827

5903

3430

4719

6436

5903

7132

2648

5903

7132

5903

6436

2388

2648

7722

7957

6940

5903

3390

6436

4719

5903

3430

7722

5903

5239

3430

2751

2151 + 4285 =A

1752 + 999 =M

2642 + 2597 =H

1493 + 895 =L

3254 + 4468 =D

2203 + 2516 =C

1655 + 993 =Y

1886 + 1544 =E

4119 + 1784 =T

2639 + 5318 =I

3675 + 3265 =S

1457 + 1933 =R

1551 + 3276 =U

3787 + 3345 =O

0/14 letters found

Clue 4

Subtraction

The display case started with a large collection of robot figures. Subtracting the ones left behind shows how many are missing from the shelf.

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

5154

5765

2156

7743

8499

8958

4052

5765

5154

2156

6928

3538

8958

6867

1566

4052

6928

2156

8474

7743

2156

8958

5765

5019

8499

2156

5019

3359

1037

5432 - 278 =G

4259 - 721 =W

7254 - 3895 =O

11430 - 3687 =N

3530 - 1964 =P

9309 - 2442 =S

7656 - 1891 =R

9511 - 553 =A

11215 - 4287 =L

6934 - 4778 =E

10095 - 1596 =H

12995 - 4521 =D

2314 - 1277 =Y

8501 - 3482 =T

6717 - 2665 =I

0/15 letters found

Clue 5

Division facts (1-12) — the last clue

We find a stash of colorful game tokens. Splitting them evenly among our detective team reveals the final clue hidden inside the last cup.

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

44 ÷ 4 = ?

50 ÷ 10 = ?

36 ÷ 6 = ?

20 ÷ 5 = ?

2 ÷ 1 = ?

90 ÷ 9 = ?

72 ÷ 9 = ?

60 ÷ 5 = ?

9 ÷ 3 = ?

21 ÷ 3 = ?

11 ÷ 11 = ?

Step 2 — cross out the sentence with each answer

1.The villain sends a robotic beetle into the vault, then hops out the window with a paper frog.

2.The villain jumps over the security lasers, then hides their face under a paper helmet.

3.The villain jumps over the security lasers, then hops out the window with a paper frog.

4.The villain zaps the display case with a magnet, then blocks the cameras using a paper dragon.

5.The villain zaps the display case with a magnet, then tosses a paper shuriken at the alarm.

6.The villain zaps the display case with a magnet, then hides their face under a paper helmet.

7.The villain jumps over the security lasers, then tosses a paper shuriken at the alarm.

8.The villain sprays glowing neon paint everywhere, then blocks the cameras using a paper dragon.

9.The villain zaps the display case with a magnet, then glides away on a folded paper crane.

10.The villain blows a loud sonic toy whistle, then hides their face under a paper helmet.

11.The villain sends a robotic beetle into the vault, then tosses a paper shuriken at the alarm.

12.The villain blows a loud sonic toy whistle, then tosses a paper shuriken at the alarm.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Tokyo Toy Tower Caper

Culprit: Yuto (Super Magnet Glove · Paper Crane Flyer · Right Chopstick Hand · Neon Green Spikes · Cute Fluffy Cat Toy)

Clue 1 (Place value): "THE THIEF HAS NO PAPER DRAGON SHIELD"
What is the value of the 1 in 120? = 100 (T) · What is the value of the 4 in 3,146? = 40 (S) · What is the value of the 1 in 1,550? = 1000 (F) · What is the value of the 7 in 7,109? = 7000 (P) · What is the value of the 5 in 6,253? = 50 (A) · What is the value of the 7 in 8,973? = 70 (I) · What is the value of the 9 in 3,926? = 900 (O) · What is the value of the 2 in 1,321? = 20 (H) · What is the value of the 4 in 7,472? = 400 (R) · What is the value of the 8 in 8,303? = 8000 (E) · What is the value of the 3 in 434? = 30 (N) · What is the value of the 2 in 82,449? = 2000 (L) · What is the value of the 3 in 93,402? = 3000 (D) · What is the value of the 7 in 5,716? = 700 (G)
Clue 2 (Rounding): "THE THIEF HELD THE STICKS IN RIGHT HAND"
Round 1,722 to the nearest hundred = 1700 (T) · Round 4,258 to the nearest hundred = 4300 (N) · Round 130 to the nearest ten = 130 (L) · Round 3,440 to the nearest thousand = 3000 (A) · Round 19 to the nearest ten = 20 (E) · Round 275 to the nearest hundred = 300 (F) · Round 86 to the nearest ten = 90 (C) · Round 9,425 to the nearest thousand = 9000 (G) · Round 166 to the nearest ten = 170 (S) · Round 286 to the nearest ten = 290 (I) · Round 502 to the nearest hundred = 500 (R) · Round 2,340 to the nearest hundred = 2300 (K) · Round 1,514 to the nearest thousand = 2000 (H) · Round 1,260 to the nearest hundred = 1300 (D)
Clue 3 (Addition): "A CUTE CAT TOY TOTALLY DISTRACTED THEM"
2151 + 4285 = 6436 (A) · 1752 + 999 = 2751 (M) · 2642 + 2597 = 5239 (H) · 1493 + 895 = 2388 (L) · 3254 + 4468 = 7722 (D) · 2203 + 2516 = 4719 (C) · 1655 + 993 = 2648 (Y) · 1886 + 1544 = 3430 (E) · 4119 + 1784 = 5903 (T) · 2639 + 5318 = 7957 (I) · 3675 + 3265 = 6940 (S) · 1457 + 1933 = 3390 (R) · 1551 + 3276 = 4827 (U) · 3787 + 3345 = 7132 (O)
Clue 4 (Subtraction): "GREEN HAIR GEL WAS SPILLED NEAR THE TOY"
5432 - 278 = 5154 (G) · 4259 - 721 = 3538 (W) · 7254 - 3895 = 3359 (O) · 11430 - 3687 = 7743 (N) · 3530 - 1964 = 1566 (P) · 9309 - 2442 = 6867 (S) · 7656 - 1891 = 5765 (R) · 9511 - 553 = 8958 (A) · 11215 - 4287 = 6928 (L) · 6934 - 4778 = 2156 (E) · 10095 - 1596 = 8499 (H) · 12995 - 4521 = 8474 (D) · 2314 - 1277 = 1037 (Y) · 8501 - 3482 = 5019 (T) · 6717 - 2665 = 4052 (I)
Clue 5 (Division facts (1-12)): surviving statement (box 9) → Yuto
44 ÷ 4 = 11 · 50 ÷ 10 = 5 · 36 ÷ 6 = 6 · 20 ÷ 5 = 4 · 2 ÷ 1 = 2 · 90 ÷ 9 = 10 · 72 ÷ 9 = 8 · 60 ÷ 5 = 12 · 9 ÷ 3 = 3 · 21 ÷ 3 = 7 · 11 ÷ 11 = 1

About this mystery

Grade level: Grade 4 math
Math topics: Place value, Rounding, Addition, Subtraction, Division
Reading level: grades 3-4
Theme: The Tokyo Toy Tower Caper — set in Tokyo Toy Tower
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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