🔎 The missing Halloween micropGrade 4Reading: grades 3-4MultiplicationRoundingAdditionSubtractionDivision

The Case of the Missing Halloween Microphone

The Golden Pumpkin Microphone vanished right before the big Halloween Bash! Solve the math clues around the stage to catch the thief and save the show!

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	Stage Gadget	Disguise Prop	Holding Hand	Costume Wig	Fear
Gary Ghost	Laser Pointer	Vampire Cape	LEFT HANDED	ORANGE PUMPKIN WIG	GARLIC BREAD
Frankie Stein	Fog Machine	Witch Hat	LEFT HANDED	PURPLE SPIDER WIG	SQUEAKY TOYS
Toby Bat	Fog Machine	Skeleton Gloves	RIGHT HANDED	PURPLE SPIDER WIG	GARLIC BREAD
Paula Phantom	Laser Pointer	Mummy Wraps	LEFT HANDED	ORANGE PUMPKIN WIG	BRIGHT LIGHTS
Bones Malone	Laser Pointer	Mummy Wraps	RIGHT HANDED	PURPLE SPIDER WIG	GARLIC BREAD
Mummy Maya	Spotlight	Ghost Sheet	LEFT HANDED	NEON GREEN WIG	SQUEAKY TOYS
Victor Vamp	Laser Pointer	Mummy Wraps	RIGHT HANDED	ORANGE PUMPKIN WIG	BRIGHT LIGHTS
Wanda Witch	Confetti Cannon	Mummy Wraps	LEFT HANDED	ORANGE PUMPKIN WIG	SQUEAKY TOYS
Fiona Fog	Echo Pedal	Ghost Sheet	RIGHT HANDED	ORANGE PUMPKIN WIG	BRIGHT LIGHTS
Frankie Fly	Laser Pointer	Ghost Sheet	LEFT HANDED	ORANGE PUMPKIN WIG	BRIGHT LIGHTS
Iggy Igor	Echo Pedal	Witch Hat	LEFT HANDED	ORANGE PUMPKIN WIG	BRIGHT LIGHTS
DJ Ghoul	Echo Pedal	Vampire Cape	RIGHT HANDED	NEON GREEN WIG	BRIGHT LIGHTS
Wendy Werewolf	Echo Pedal	Witch Hat	LEFT HANDED	NEON GREEN WIG	BRIGHT LIGHTS
Sam Screamer	Fog Machine	Vampire Cape	LEFT HANDED	ORANGE PUMPKIN WIG	BRIGHT LIGHTS
Tina Tomb	Laser Pointer	Skeleton Gloves	LEFT HANDED	PURPLE SPIDER WIG	BRIGHT LIGHTS
Bruno Brood	Fog Machine	Witch Hat	RIGHT HANDED	NEON GREEN WIG	GARLIC BREAD
Rick Reaper	Echo Pedal	Skeleton Gloves	RIGHT HANDED	NEON GREEN WIG	SQUEAKY TOYS
Jack O Lantern	Fog Machine	Mummy Wraps	LEFT HANDED	NEON GREEN WIG	BRIGHT LIGHTS
Zelda Zombie	Laser Pointer	Vampire Cape	LEFT HANDED	ORANGE PUMPKIN WIG	SQUEAKY TOYS
Count Vlad	Laser Pointer	Skeleton Gloves	LEFT HANDED	ORANGE PUMPKIN WIG	BRIGHT LIGHTS
Sally Spider	Echo Pedal	Ghost Sheet	RIGHT HANDED	NEON GREEN WIG	GARLIC BREAD

Clue 1

Multiplication facts (1-12)

To check the backstage speaker crates, you count equal stacks of sound gear.

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

108

8 × 12 =T

2 × 2 =E

7 × 10 =A

9 × 10 =N

9 × 9 =O

9 × 12 =C

1 × 3 =H

4 × 8 =W

8 × 9 =I

12 × 7 =L

10 × 4 =V

12 × 12 =D

11 × 6 =R

5 × 1 =S

0/14 letters found

Clue 2

Rounding

The soundboard digital meter rounds all decibel readings to the nearest hundred.

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

3000

290

1300

2900

230

2300

1700

3000

1300

3700

230

1300

3700

290

230

4300

3700

900

9000

200

300

290

500

9000

230

4300

1300

3700

1700

2900

200

230

200

Round 2,878 to the nearest thousandW

Round 9,493 to the nearest thousandL

Round 1,332 to the nearest hundredT

Round 2,272 to the nearest hundredS

Round 861 to the nearest hundredO

Round 290 to the nearest tenI

Round 3,708 to the nearest hundredH

Round 203 to the nearest hundredD

Round 464 to the nearest hundredC

Round 2,918 to the nearest hundredN

Round 4,285 to the nearest hundredF

Round 1,709 to the nearest hundredA

Round 231 to the nearest tenE

Round 282 to the nearest hundredM

0/14 letters found

Clue 3

Addition

You add up the total missing cables found near the microphone stand.

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

7867

3582

7409

6221

4451

7328

9057

7409

3328

6221

5272

9563

3328

7409

9798

7867

3582

7409

9533

6685

4460

6732

4451

7867

3582

5624

3328

4451

9057

3582

7867

4930

4451

9057

3582

7867

6221

3104 + 4763 =T

1757 + 2694 =I

6779 + 3019 =D

1973 + 3651 =B

2303 + 1025 =R

1250 + 2332 =H

4474 + 5059 =M

2459 + 4273 =W

2016 + 3256 =C

3997 + 3412 =E

4332 + 1889 =S

1558 + 2902 =F

3662 + 5395 =G

5085 + 4478 =A

3298 + 4030 =N

2268 + 2662 =L

2883 + 3802 =O

0/17 letters found

Clue 4

Subtraction

You compare the full stash of batteries against what remains in the box.

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

3195

1223

8613

7382

1898

8808

8696

5359

7382

2412

8299

8808

2412

2081

3369

8299

8613

2081

1223

1048

8613

8696

2412

1223

8613

7382

2568

8808

2568

3195

7382

7217

2081

3369

3426 - 231 =O

2849 - 281 =D

12119 - 3311 =E

5812 - 3731 =I

10325 - 4966 =Y

8701 - 5 =S

5578 - 4530 =W

12033 - 3420 =A

4559 - 3336 =R

11599 - 3300 =H

8087 - 705 =N

3504 - 1606 =G

4397 - 1985 =T

10154 - 2937 =M

7986 - 4617 =C

0/15 letters found

Clue 5

Division facts (1-12) — the last clue

You divide the glowing glowsticks equally among the stage crew helpers.

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

6 ÷ 3 = ?

84 ÷ 7 = ?

18 ÷ 2 = ?

24 ÷ 8 = ?

20 ÷ 4 = ?

40 ÷ 5 = ?

28 ÷ 7 = ?

7 ÷ 1 = ?

12 ÷ 12 = ?

50 ÷ 5 = ?

33 ÷ 3 = ?

Step 2 — cross out the sentence with each answer

1.The villain aimed a bright spotlight at the ceiling, then swished a vampire cape.

2.The villain blasted fog across the stage, then swished a vampire cape.

3.The villain flashed laser lights into the crowd, then swished a vampire cape.

4.The villain turned on the heavy echo pedal, then tangled up in mummy wraps.

5.The villain turned on the heavy echo pedal, then tipped a witch hat.

6.The villain flashed laser lights into the crowd, then waved skeleton gloves.

7.The villain aimed a bright spotlight at the ceiling, then tipped a witch hat.

8.The villain turned on the heavy echo pedal, then waved skeleton gloves.

9.The villain flashed laser lights into the crowd, then floated away in a ghost sheet.

10.The villain fired the loud confetti cannon, then floated away in a ghost sheet.

11.The villain fired the loud confetti cannon, then swished a vampire cape.

12.The villain flashed laser lights into the crowd, then tangled up in mummy wraps.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Case of the Missing Halloween Microphone

Culprit: Count Vlad (Laser Pointer · Skeleton Gloves · LEFT HANDED · ORANGE PUMPKIN WIG · BRIGHT LIGHTS)

Clue 1 (Multiplication facts (1-12)): "THE VILLAIN DOES NOT WEAR A WITCH HAT"
8 × 12 = 96 (T) · 2 × 2 = 4 (E) · 7 × 10 = 70 (A) · 9 × 10 = 90 (N) · 9 × 9 = 81 (O) · 9 × 12 = 108 (C) · 1 × 3 = 3 (H) · 4 × 8 = 32 (W) · 8 × 9 = 72 (I) · 12 × 7 = 84 (L) · 10 × 4 = 40 (V) · 12 × 12 = 144 (D) · 11 × 6 = 66 (R) · 5 × 1 = 5 (S)
Clue 2 (Rounding): "WITNESS SAW THE THIEF HOLD MIC LEFT HANDED"
Round 2,878 to the nearest thousand = 3000 (W) · Round 9,493 to the nearest thousand = 9000 (L) · Round 1,332 to the nearest hundred = 1300 (T) · Round 2,272 to the nearest hundred = 2300 (S) · Round 861 to the nearest hundred = 900 (O) · Round 290 to the nearest ten = 290 (I) · Round 3,708 to the nearest hundred = 3700 (H) · Round 203 to the nearest hundred = 200 (D) · Round 464 to the nearest hundred = 500 (C) · Round 2,918 to the nearest hundred = 2900 (N) · Round 4,285 to the nearest hundred = 4300 (F) · Round 1,709 to the nearest hundred = 1700 (A) · Round 231 to the nearest ten = 230 (E) · Round 282 to the nearest hundred = 300 (M)
Clue 3 (Addition): "THE SINGER SCARED THEM OFF WITH BRIGHT LIGHTS"
3104 + 4763 = 7867 (T) · 1757 + 2694 = 4451 (I) · 6779 + 3019 = 9798 (D) · 1973 + 3651 = 5624 (B) · 2303 + 1025 = 3328 (R) · 1250 + 2332 = 3582 (H) · 4474 + 5059 = 9533 (M) · 2459 + 4273 = 6732 (W) · 2016 + 3256 = 5272 (C) · 3997 + 3412 = 7409 (E) · 4332 + 1889 = 6221 (S) · 1558 + 2902 = 4460 (F) · 3662 + 5395 = 9057 (G) · 5085 + 4478 = 9563 (A) · 3298 + 4030 = 7328 (N) · 2268 + 2662 = 4930 (L) · 2883 + 3802 = 6685 (O)
Clue 4 (Subtraction): "ORANGE SYNTHETIC HAIR WAS STRANDED ON MIC"
3426 - 231 = 3195 (O) · 2849 - 281 = 2568 (D) · 12119 - 3311 = 8808 (E) · 5812 - 3731 = 2081 (I) · 10325 - 4966 = 5359 (Y) · 8701 - 5 = 8696 (S) · 5578 - 4530 = 1048 (W) · 12033 - 3420 = 8613 (A) · 4559 - 3336 = 1223 (R) · 11599 - 3300 = 8299 (H) · 8087 - 705 = 7382 (N) · 3504 - 1606 = 1898 (G) · 4397 - 1985 = 2412 (T) · 10154 - 2937 = 7217 (M) · 7986 - 4617 = 3369 (C)
Clue 5 (Division facts (1-12)): surviving statement (box 6) → Count Vlad
6 ÷ 3 = 2 · 84 ÷ 7 = 12 · 18 ÷ 2 = 9 · 24 ÷ 8 = 3 · 20 ÷ 4 = 5 · 40 ÷ 5 = 8 · 28 ÷ 7 = 4 · 7 ÷ 1 = 7 · 12 ÷ 12 = 1 · 50 ÷ 5 = 10 · 33 ÷ 3 = 11

About this mystery

Grade level: Grade 4 math
Math topics: Multiplication, Rounding, Addition, Subtraction, Division
Reading level: grades 3-4
Theme: The Case of the Missing Halloween Microphone — set in Pumpkin Pavilion Stage
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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