Browse cases 🖨 Print / Download PDF

Grade 6Reading: grades 1-2Place valueSubtractionMultiplicationAdditionDivision

The Secret Toy Lab Mystery

Oh no! A rogue agent took the Golden Laser Yo-Yo. The Spy Toy Lab is in trouble. We must 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	Super Gadget	Secret Tool	Active Glove	Spy Helmet Color	Toy Distraction
Pip	Hover Boots	Pocket Glider	Left Glove On	Bright Red Helmet	Squeaky Toy Duck
Mia	Bubble Shield	Decoder Glasses	Right Glove On	Bright Red Helmet	Wind Up Mouse
Sam	Laser Watch	Decoder Glasses	Left Glove On	Neon Blue Helmet	Bouncing Red Ball
Zac	Super Suction Cup	Sticky Glove	Right Glove On	Neon Blue Helmet	Squeaky Toy Duck
Mac	Spy Drone	Sticky Glove	Right Glove On	Bright Red Helmet	Squeaky Toy Duck
Fin	Hover Boots	Decoder Glasses	Right Glove On	Bright Red Helmet	Bouncing Red Ball
Roy	Bubble Shield	Decoder Glasses	Left Glove On	Forest Green Helmet	Squeaky Toy Duck
Ben	Hover Boots	Decoder Glasses	Left Glove On	Bright Red Helmet	Bouncing Red Ball
Gus	Spy Drone	Pocket Glider	Left Glove On	Forest Green Helmet	Squeaky Toy Duck
Eli	Super Suction Cup	Sticky Glove	Left Glove On	Bright Red Helmet	Squeaky Toy Duck
Max	Super Suction Cup	Decoder Glasses	Left Glove On	Bright Red Helmet	Squeaky Toy Duck
Rex	Laser Watch	Grapple Hook	Right Glove On	Neon Blue Helmet	Bouncing Red Ball
Zoe	Super Suction Cup	Sonar Mic	Left Glove On	Forest Green Helmet	Wind Up Mouse
Jax	Spy Drone	Decoder Glasses	Left Glove On	Bright Red Helmet	Wind Up Mouse
Ned	Laser Watch	Sticky Glove	Right Glove On	Bright Red Helmet	Bouncing Red Ball
Dan	Hover Boots	Sonar Mic	Left Glove On	Bright Red Helmet	Squeaky Toy Duck
Kat	Hover Boots	Grapple Hook	Right Glove On	Forest Green Helmet	Bouncing Red Ball
Joy	Bubble Shield	Sonar Mic	Right Glove On	Bright Red Helmet	Squeaky Toy Duck
Sky	Bubble Shield	Pocket Glider	Left Glove On	Forest Green Helmet	Bouncing Red Ball
Leo	Laser Watch	Grapple Hook	Left Glove On	Forest Green Helmet	Bouncing Red Ball
Ava	Laser Watch	Decoder Glasses	Left Glove On	Bright Red Helmet	Squeaky Toy Duck

Clue 1

Place value

Agent Spark looks at the keypad. The secret numbers have special spots. We must check the place value.

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

6000

300

6000

1000

300

200

3000

400

300

900

400

6000

300

7000

6000

1000

600

5000

400

9000

300

What is the value of the 6 in 446,599?T

What is the value of the 9 in 764,912?N

What is the value of the 3 in 540,732?H

What is the value of the 1 in 51,762?I

What is the value of the 6 in 89,608?K

What is the value of the 3 in 423,752?D

What is the value of the 1 in 735,710?U

What is the value of the 4 in 18,495?O

What is the value of the 5 in 965,006?L

What is the value of the 9 in 489,655?V

What is the value of the 7 in 47,993?A

What is the value of the 2 in 550,249?F

What is the value of the 4 in 793,642?G

What is the value of the 2 in 971,829?C

What is the value of the 5 in 37,252?S

What is the value of the 3 in 445,372?E

What is the value of the 9 in 687,090?Y

0/17 letters found

Clue 2

Subtraction

The team finds a box of spy badges. Some badges are missing. Let us subtract to find how many.

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

2281

1167

5950

2598

5950

7754

2281

1167

6259

6615

3610

6831

2598

7035

6118

5950

2598

5950

7754

2281

6259

3085

2598

5950

6259

6615

8246

4014

5372

6615

2281

6884 - 4603 =T

5698 - 1684 =R

5388 - 1778 =D

10955 - 2709 =P

9630 - 3680 =E

7359 - 1987 =I

10738 - 4620 =V

4967 - 1882 =C

5687 - 4520 =H

9523 - 2692 =G

2672 - 74 =L

10941 - 3906 =O

11525 - 3771 =F

8080 - 1465 =N

6855 - 596 =A

0/15 letters found

Clue 3

Multiplication facts (1-12)

We see rows of laser pens on the wall. They make a grid. We multiply the rows to count them fast.

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

100

120

100

120

132

5 × 5 =T

11 × 9 =E

6 × 11 =K

12 × 4 =L

9 × 6 =H

5 × 6 =O

12 × 10 =D

1 × 1 =U

9 × 12 =V

12 × 11 =C

8 × 12 =N

10 × 10 =S

5 × 11 =A

5 × 9 =Q

4 × 8 =P

12 × 6 =I

0/16 letters found

Clue 4

Addition

The crew brings all their secret maps together. We add them up to make one big spy map.

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

3063

6771

2128

8852

3638

9234

5687

7511

6771

5687

9788

6771

5278

3895

6771

7567

9237

4462

5968

9234

7567

8852

9234

7567

9788

6771

5687

8852

7511

1993 + 1070 =W

4938 + 2629 =T

1287 + 841 =F

5157 + 4077 =N

2478 + 1160 =U

3626 + 2061 =D

3374 + 3397 =E

1838 + 2057 =M

2636 + 2642 =L

2861 + 6376 =P

2015 + 3953 =I

2338 + 2124 =A

4181 + 5607 =H

2307 + 5204 =R

4087 + 4765 =O

0/15 letters found

Clue 5

Division facts (1-12) — the last clue

We have a pile of shiny spy rings. We must share them equally. We divide them among the team.

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

9 ÷ 9 = ?

14 ÷ 7 = ?

36 ÷ 9 = ?

32 ÷ 4 = ?

120 ÷ 10 = ?

45 ÷ 5 = ?

21 ÷ 7 = ?

45 ÷ 9 = ?

22 ÷ 2 = ?

40 ÷ 4 = ?

14 ÷ 2 = ?

Step 2 — cross out the sentence with each answer

1.The villain zoomed past the guards on hover boots, then escaped out the window using a pocket glider.

2.The villain climbed up the tall wall with suction cups, then read the secret code with decoder glasses.

3.The villain zapped the main lock with a laser watch, then zipped up to the high ceiling on a grapple hook.

4.The villain zoomed past the guards on hover boots, then listened to the safe clicks with a sonar mic.

5.The villain climbed up the tall wall with suction cups, then zipped up to the high ceiling on a grapple hook.

6.The villain zapped the main lock with a laser watch, then read the secret code with decoder glasses.

7.The villain climbed up the tall wall with suction cups, then grabbed the shiny prize with a sticky glove.

8.The villain zapped the main lock with a laser watch, then listened to the safe clicks with a sonar mic.

9.The villain zoomed past the guards on hover boots, then grabbed the shiny prize with a sticky glove.

10.The villain zapped the main lock with a laser watch, then escaped out the window using a pocket glider.

11.The villain flew a spy drone into the vault room, then escaped out the window using a pocket glider.

12.The villain zoomed past the guards on hover boots, then zipped up to the high ceiling on a grapple hook.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Secret Toy Lab Mystery

Culprit: Ava (Laser Watch · Decoder Glasses · Left Glove On · Bright Red Helmet · Squeaky Toy Duck)

Clue 1 (Place value): "THE THIEF DOES NOT USE A STICKY GLOVE"
What is the value of the 6 in 446,599? = 6000 (T) · What is the value of the 9 in 764,912? = 900 (N) · What is the value of the 3 in 540,732? = 30 (H) · What is the value of the 1 in 51,762? = 1000 (I) · What is the value of the 6 in 89,608? = 600 (K) · What is the value of the 3 in 423,752? = 3000 (D) · What is the value of the 1 in 735,710? = 10 (U) · What is the value of the 4 in 18,495? = 400 (O) · What is the value of the 5 in 965,006? = 5000 (L) · What is the value of the 9 in 489,655? = 9000 (V) · What is the value of the 7 in 47,993? = 7000 (A) · What is the value of the 2 in 550,249? = 200 (F) · What is the value of the 4 in 793,642? = 40 (G) · What is the value of the 2 in 971,829? = 20 (C) · What is the value of the 5 in 37,252? = 50 (S) · What is the value of the 3 in 445,372? = 300 (E) · What is the value of the 9 in 687,090? = 90 (Y)
Clue 2 (Subtraction): "THE LEFT HAND GLOVE LEFT A CLEAN PRINT"
6884 - 4603 = 2281 (T) · 5698 - 1684 = 4014 (R) · 5388 - 1778 = 3610 (D) · 10955 - 2709 = 8246 (P) · 9630 - 3680 = 5950 (E) · 7359 - 1987 = 5372 (I) · 10738 - 4620 = 6118 (V) · 4967 - 1882 = 3085 (C) · 5687 - 4520 = 1167 (H) · 9523 - 2692 = 6831 (G) · 2672 - 74 = 2598 (L) · 10941 - 3906 = 7035 (O) · 11525 - 3771 = 7754 (F) · 8080 - 1465 = 6615 (N) · 6855 - 596 = 6259 (A)
Clue 3 (Multiplication facts (1-12)): "THE VILLAIN STOPPED TO SQUEAK A DUCK"
5 × 5 = 25 (T) · 11 × 9 = 99 (E) · 6 × 11 = 66 (K) · 12 × 4 = 48 (L) · 9 × 6 = 54 (H) · 5 × 6 = 30 (O) · 12 × 10 = 120 (D) · 1 × 1 = 1 (U) · 9 × 12 = 108 (V) · 12 × 11 = 132 (C) · 8 × 12 = 96 (N) · 10 × 10 = 100 (S) · 5 × 11 = 55 (A) · 5 × 9 = 45 (Q) · 4 × 8 = 32 (P) · 12 × 6 = 72 (I)
Clue 4 (Addition): "WE FOUND RED HELMET PAINT ON THE DOOR"
1993 + 1070 = 3063 (W) · 4938 + 2629 = 7567 (T) · 1287 + 841 = 2128 (F) · 5157 + 4077 = 9234 (N) · 2478 + 1160 = 3638 (U) · 3626 + 2061 = 5687 (D) · 3374 + 3397 = 6771 (E) · 1838 + 2057 = 3895 (M) · 2636 + 2642 = 5278 (L) · 2861 + 6376 = 9237 (P) · 2015 + 3953 = 5968 (I) · 2338 + 2124 = 4462 (A) · 4181 + 5607 = 9788 (H) · 2307 + 5204 = 7511 (R) · 4087 + 4765 = 8852 (O)
Clue 5 (Division facts (1-12)): surviving statement (box 6) → Ava
9 ÷ 9 = 1 · 14 ÷ 7 = 2 · 36 ÷ 9 = 4 · 32 ÷ 4 = 8 · 120 ÷ 10 = 12 · 45 ÷ 5 = 9 · 21 ÷ 7 = 3 · 45 ÷ 9 = 5 · 22 ÷ 2 = 11 · 40 ÷ 4 = 10 · 14 ÷ 2 = 7

About this mystery

Grade level: Grade 6 math
Math topics: Place value, Subtraction, Multiplication, Addition, Division
Reading level: grades 1-2
Theme: The Secret Toy Lab Mystery — set in The Spy Toy Lab
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

More free printable math mysteries

6th grade worksheets Addition worksheets Subtraction worksheets Multiplication worksheets Division worksheets Place value worksheets All worksheets →

The Sky-Pirate Balloon Mystery

Grade 6

The Mystery of the Griefed Server

Grade 6

The Great Bone Mystery

Grade 6

The Great Homework Folder Mix-Up

Grade 6