🔎 JapanGrade 6Reading: grades 1-2Place valueAdditionSubtractionPercentagesDivision
The Kyoto Toy Castle Mystery
Oh no! Someone took the precious Golden Bonsai Tree from the Toy Master's shelf. Witnesses saw a speedy ninja run into the neon cherry gardens. Let us look for clues and find the thief!
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 | Dojo Skill | Tech Gear | Sword Grip | Mask Color | Distraction |
|---|---|---|---|---|---|
| Akira | origami shield | mech arms | holds sword in left hand | blue ninja mask | toy drums |
| Daiki | cherry mist | neon glow | holds sword in left hand | red ninja mask | sweet mochi |
| Mei | robo punch | neon glow | holds sword in right hand | gold ninja mask | sweet mochi |
| Chiyo | giant fan | mech arms | holds sword in left hand | red ninja mask | green tea |
| Sora | robo punch | neon glow | holds sword in left hand | gold ninja mask | sweet mochi |
| Yumi | cherry mist | cyber jet | holds sword in right hand | gold ninja mask | green tea |
| Aoi | neon speed | neon glow | holds sword in right hand | red ninja mask | green tea |
| Kenji | giant fan | bonsai blast | holds sword in right hand | gold ninja mask | toy drums |
| Yuto | neon speed | mech arms | holds sword in left hand | gold ninja mask | sweet mochi |
| Yuki | giant fan | mech arms | holds sword in left hand | red ninja mask | sweet mochi |
| Momo | cherry mist | mech arms | holds sword in left hand | gold ninja mask | green tea |
| Kaito | cherry mist | bonsai blast | holds sword in left hand | gold ninja mask | sweet mochi |
| Rin | cherry mist | cyber jet | holds sword in left hand | blue ninja mask | sweet mochi |
| Hana | robo punch | bamboo jump | holds sword in left hand | gold ninja mask | toy drums |
| Taku | neon speed | bonsai blast | holds sword in left hand | gold ninja mask | sweet mochi |
| Keiko | neon speed | cyber jet | holds sword in left hand | gold ninja mask | sweet mochi |
| Sakura | giant fan | cyber jet | holds sword in right hand | red ninja mask | sweet mochi |
| Naoko | neon speed | bamboo jump | holds sword in left hand | gold ninja mask | sweet mochi |
| Haru | cherry mist | bonsai blast | holds sword in left hand | red ninja mask | sweet mochi |
| Kenzo | giant fan | bamboo jump | holds sword in left hand | red ninja mask | green tea |
| Shin | cherry mist | bonsai blast | holds sword in left hand | blue ninja mask | sweet mochi |
Clue 1
Place value
A glowing digital screen has secret codes. We must look at the correct place value digit to read the first 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.
T
20
30
5000
50
700
5000
600
300
100
700
80
700
900
600
200
600
700
700
800
T
20
60
50
5000
2000
800
700
50
600
80
2000
7000
600
50
T
20
What is the value of the 2 in 986,724?T
What is the value of the 5 in 10,359?S
What is the value of the 2 in 94,256?C
What is the value of the 6 in 597,634?A
What is the value of the 8 in 16,385?I
What is the value of the 9 in 606,962?J
What is the value of the 7 in 665,746?N
What is the value of the 7 in 867,413?L
What is the value of the 8 in 10,821?O
What is the value of the 3 in 26,530?H
What is the value of the 6 in 859,168?U
What is the value of the 1 in 862,192?Y
What is the value of the 2 in 92,435?B
What is the value of the 3 in 819,359?K
What is the value of the 5 in 15,920?E
0/15 letters found
Clue 2
Addition
We need to count the tiny toy sushi plates. Adding them together unlocks the path to 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.
T
3088
6790
7968
8410
5931
6457
9024
8896
5931
3492
8410
6754
6899
T
3088
6790
7968
5757
7968
4815
T
3088
6790
3492
6899
8896
1316 + 1772 =T
3929 + 2528 =O
3277 + 3513 =H
4602 + 4422 =R
2820 + 3934 =I
5254 + 2714 =E
1980 + 2835 =F
1326 + 2166 =A
6099 + 2797 =D
3396 + 2361 =L
3206 + 2725 =W
2516 + 4383 =N
4785 + 3625 =S
0/13 letters found
Clue 3
Subtraction
Some paper lanterns in the garden went dark. Subtracting the dark ones from the total reveals a hidden 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.
T
7467
4645
2946
4807
7556
8170
3703
8170
7779
8170
4807
1121
7556
8997
4873
4207
7779
2946
2946
T
7467
4873
8997
7118
4645
1148
11302 - 3835 =T
3543 - 2395 =I
10394 - 3276 =C
12615 - 4836 =W
8994 - 4121 =M
8234 - 678 =R
10506 - 1509 =O
5137 - 2191 =E
5572 - 927 =H
5038 - 3917 =F
5437 - 1734 =N
7260 - 2453 =Y
4615 - 408 =S
12133 - 3963 =A
0/14 letters found
Clue 4
Percentages
The robo-dojo power meter is running low. Finding the correct percentage opens a safe with a fresh 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.
A
18
44
28
27
4
30
37
30
2
A
18
45
A
18
43
42
27
25
38
17
A
18
43
14
37
30
25
75% of 24 =A
50% of 8 =D
50% of 56 =O
50% of 84 =K
20% of 225 =M
20% of 125 =E
20% of 215 =S
60% of 50 =N
40% of 110 =G
20% of 85 =T
5% of 40 =J
40% of 35 =H
60% of 45 =L
20% of 190 =F
50% of 74 =I
0/15 letters found
Clue 5
Division facts (1-12) — the last clue
We have to divide these colorful origami cranes equally among our team. Sharing them fairly gives us our final clue.
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
72 ÷ 8 = ?
120 ÷ 12 = ?
48 ÷ 12 = ?
80 ÷ 10 = ?
30 ÷ 6 = ?
16 ÷ 8 = ?
54 ÷ 9 = ?
2 ÷ 2 = ?
49 ÷ 7 = ?
55 ÷ 5 = ?
27 ÷ 9 = ?
Step 2 — cross out the sentence with each answer
1.The villain stretches a big robot hand, then uses giant metal arms to climb.
2.The villain throws giant paper stars, then jumps over the tall bamboo.
3.The villain makes a cloud of cherry petals, then lights up with a bright neon glow.
4.The villain zooms past the neon lights, then flies away on a cyber jet.
5.The villain unfolds a huge paper shield, then flies away on a cyber jet.
6.The villain zooms past the neon lights, then shoots a bright bonsai blast.
7.The villain zooms past the neon lights, then lights up with a bright neon glow.
8.The villain stretches a big robot hand, then shoots a bright bonsai blast.
9.The villain zooms past the neon lights, then uses giant metal arms to climb.
10.The villain stretches a big robot hand, then lights up with a bright neon glow.
11.The villain stretches a big robot hand, then flies away on a cyber jet.
12.The villain zooms past the neon lights, then jumps over the tall bamboo.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Kyoto Toy Castle Mystery
Culprit: Naoko (neon speed · bamboo jump · holds sword in left hand · gold ninja mask · sweet mochi)
- Clue 1 (Place value): "THE SNEAKY NINJA CANNOT USE BONSAI BLAST"What is the value of the 2 in 986,724? = 20 (T) · What is the value of the 5 in 10,359? = 50 (S) · What is the value of the 2 in 94,256? = 200 (C) · What is the value of the 6 in 597,634? = 600 (A) · What is the value of the 8 in 16,385? = 80 (I) · What is the value of the 9 in 606,962? = 900 (J) · What is the value of the 7 in 665,746? = 700 (N) · What is the value of the 7 in 867,413? = 7000 (L) · What is the value of the 8 in 10,821? = 800 (O) · What is the value of the 3 in 26,530? = 30 (H) · What is the value of the 6 in 859,168? = 60 (U) · What is the value of the 1 in 862,192? = 100 (Y) · What is the value of the 2 in 92,435? = 2000 (B) · What is the value of the 3 in 819,359? = 300 (K) · What is the value of the 5 in 15,920? = 5000 (E)
- Clue 2 (Addition): "THE SWORD WAS IN THE LEFT HAND"1316 + 1772 = 3088 (T) · 3929 + 2528 = 6457 (O) · 3277 + 3513 = 6790 (H) · 4602 + 4422 = 9024 (R) · 2820 + 3934 = 6754 (I) · 5254 + 2714 = 7968 (E) · 1980 + 2835 = 4815 (F) · 1326 + 2166 = 3492 (A) · 6099 + 2797 = 8896 (D) · 3396 + 2361 = 5757 (L) · 3206 + 2725 = 5931 (W) · 2516 + 4383 = 6899 (N) · 4785 + 3625 = 8410 (S)
- Clue 3 (Subtraction): "THEY RAN AWAY FROM SWEET MOCHI"11302 - 3835 = 7467 (T) · 3543 - 2395 = 1148 (I) · 10394 - 3276 = 7118 (C) · 12615 - 4836 = 7779 (W) · 8994 - 4121 = 4873 (M) · 8234 - 678 = 7556 (R) · 10506 - 1509 = 8997 (O) · 5137 - 2191 = 2946 (E) · 5572 - 927 = 4645 (H) · 5038 - 3917 = 1121 (F) · 5437 - 1734 = 3703 (N) · 7260 - 2453 = 4807 (Y) · 4615 - 408 = 4207 (S) · 12133 - 3963 = 8170 (A)
- Clue 4 (Percentages): "A GOLD NINJA MASK LEFT A SHINE"75% of 24 = 18 (A) · 50% of 8 = 4 (D) · 50% of 56 = 28 (O) · 50% of 84 = 42 (K) · 20% of 225 = 45 (M) · 20% of 125 = 25 (E) · 20% of 215 = 43 (S) · 60% of 50 = 30 (N) · 40% of 110 = 44 (G) · 20% of 85 = 17 (T) · 5% of 40 = 2 (J) · 40% of 35 = 14 (H) · 60% of 45 = 27 (L) · 20% of 190 = 38 (F) · 50% of 74 = 37 (I)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Naoko72 ÷ 8 = 9 · 120 ÷ 12 = 10 · 48 ÷ 12 = 4 · 80 ÷ 10 = 8 · 30 ÷ 6 = 5 · 16 ÷ 8 = 2 · 54 ÷ 9 = 6 · 2 ÷ 2 = 1 · 49 ÷ 7 = 7 · 55 ÷ 5 = 11 · 27 ÷ 9 = 3
About this mystery
- Grade level
- Grade 6 math
- Math topics
- Place value, Addition, Subtraction, Percentages, Division
- Reading level
- grades 1-2
- Theme
- The Kyoto Toy Castle Mystery — set in the Kyoto Toy Castle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects