Grade 5Reading: grades 5-6Fractions of a numberOrder of operationsMultiplicationRounding

The Case of the Missing Spy-Bot

A legendary prototype Spy-Bot has been taken from the high-tech vault at the Secret Agent Academy! The Head Gadgetmaster needs your help. One of the trainee agents is actually a rogue double-agent. Follow the clues, solve the training challenges, and recover the Spy-Bot!

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	Primary Gadget	Disguise Gear	Writing Hand	Hair Dye Streak	Academy Trap
Agent Miller	laser watch	fake mustache	left handed	neon pink streak	loud siren alarm
Agent Davis	laser watch	glow badge	right handed	neon green streak	sticky gum trap
Agent Foster	laser watch	fake mustache	right handed	neon green streak	bright flashbang
Agent Cooper	grappling pen	voice changer	left handed	neon green streak	loud siren alarm
Agent Knight	rocket boots	camo cloak	right handed	neon pink streak	bright flashbang
Agent Hunter	grappling pen	voice changer	right handed	neon blue streak	loud siren alarm
Agent Carter	holo glasses	fake mustache	left handed	neon green streak	loud siren alarm
Agent Hayes	grappling pen	wig kit	right handed	neon green streak	sticky gum trap
Agent Chase	laser watch	glow badge	left handed	neon green streak	loud siren alarm
Agent Chen	sonic whistle	fake mustache	left handed	neon green streak	bright flashbang
Agent Torres	holo glasses	camo cloak	left handed	neon green streak	bright flashbang
Agent Sharpe	grappling pen	glow badge	left handed	neon pink streak	bright flashbang
Agent Wilde	laser watch	camo cloak	right handed	neon green streak	bright flashbang
Agent Drake	laser watch	glow badge	left handed	neon green streak	bright flashbang
Agent Cross	rocket boots	wig kit	left handed	neon blue streak	bright flashbang
Agent Smith	holo glasses	wig kit	left handed	neon pink streak	bright flashbang
Agent Sterling	grappling pen	voice changer	right handed	neon pink streak	loud siren alarm
Agent Pierce	rocket boots	wig kit	right handed	neon green streak	sticky gum trap
Agent Vance	rocket boots	wig kit	left handed	neon pink streak	bright flashbang
Agent Stone	holo glasses	voice changer	left handed	neon pink streak	bright flashbang
Agent Bishop	holo glasses	fake mustache	left handed	neon pink streak	bright flashbang

Clue 1

Fractions of a number

We found a secure lockbox containing files on the rogue agent's disguise gear. To open it, you must figure out exactly what fraction of the security grid's active beams have been deactivated.

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

4/10 of 95 =T

4/10 of 10 =W

3/6 of 14 =S

4/8 of 68 =N

2/5 of 50 =D

1/6 of 30 =L

1/8 of 24 =R

1/2 of 60 =A

3/4 of 36 =G

1/6 of 156 =H

1/5 of 145 =U

1/5 of 10 =O

1/4 of 156 =E

7/10 of 30 =V

2/10 of 155 =B

0/15 letters found

Clue 2

Order of operations

A coded transmission from the control room contains clues about the suspect's writing hand. Solve this multi-step code circuit using the strict order of spy operations to bypass the firewall.

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

4 × 9 - 8 =T

7 × 4 - 19 =O

3 + 2 × 7 =H

2 + 2 × 2 =W

2 + 4 × 7 =D

8 × 6 - 6 =L

3 + 8 × 2 =E

9 × 5 - 5 =N

7 × 9 - 19 =I

11 × 7 - 13 =A

11 × 8 - 14 =R

60 + 2 × 8 =G

39 + 3 × 4 =F

0/13 letters found

Clue 3

Multiplication facts (1-12)

The security guard remembers setting up rows of defensive traps in the sector. Calculate the total number of defense traps across these equal rows to unlock the suspect's weakness file.

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

2 × 11 =A

8 × 4 =F

1 × 5 =N

9 × 7 =I

10 × 10 =W

9 × 10 =E

12 × 8 =T

3 × 2 =L

7 × 11 =R

2 × 2 =H

10 × 6 =G

4 × 4 =S

1 × 7 =B

6 × 5 =D

0/14 letters found

Clue 4

Rounding

The thermal scanner picked up a trace of hair dye, but the digital signal is fuzzy and only shows a rounded number. Round the frequency to the nearest hundred to isolate the exact hair color.

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

110

700

130

370

230

130

700

2000

170

2000

130

1700

290

7000

900

700

2000

7000

3700

370

110

3700

2000

170

Round 110 to the nearest tenT

Round 708 to the nearest hundredH

Round 920 to the nearest hundredK

Round 288 to the nearest tenP

Round 1,704 to the nearest thousandA

Round 1,717 to the nearest hundredO

Round 3,704 to the nearest hundredR

Round 172 to the nearest tenD

Round 130 to the nearest tenE

Round 372 to the nearest tenS

Round 7,380 to the nearest thousandI

Round 232 to the nearest tenC

Round 54 to the nearest tenN

0/13 letters found

Clue 5

Fractions of a number — the last clue

To retrieve the final security report, you need to divide the remaining energy cells among the recovery drones. Figure out the fraction of energy left to power the printer.

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

2/5 of 25 = ?

3/10 of 30 = ?

2/10 of 25 = ?

6/8 of 8 = ?

8/10 of 5 = ?

2/10 of 5 = ?

3/10 of 10 = ?

1/4 of 44 = ?

1/5 of 10 = ?

4/8 of 14 = ?

2/6 of 24 = ?

Step 2 — cross out the sentence with each answer

1.The villain zapped the vault lock with a laser watch, then vanished into the shadows using a camo cloak.

2.The villain swung across the laser grid with a grappling pen, then spoke into the intercom with a voice changer.

3.The villain swung across the laser grid with a grappling pen, then unlocked the private elevator with a glow badge.

4.The villain zapped the vault lock with a laser watch, then sneaked past the guards wearing a fake mustache.

5.The villain fooled the biometric scanners with holo glasses, then changed their identity using a wig kit.

6.The villain shattered the alarm glass with a sonic whistle, then changed their identity using a wig kit.

7.The villain shattered the alarm glass with a sonic whistle, then sneaked past the guards wearing a fake mustache.

8.The villain shattered the alarm glass with a sonic whistle, then spoke into the intercom with a voice changer.

9.The villain blasted over the security fence with rocket boots, then changed their identity using a wig kit.

10.The villain fooled the biometric scanners with holo glasses, then sneaked past the guards wearing a fake mustache.

11.The villain zapped the vault lock with a laser watch, then changed their identity using a wig kit.

12.The villain fooled the biometric scanners with holo glasses, then spoke into the intercom with a voice changer.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Case of the Missing Spy-Bot

Culprit: Agent Stone (holo glasses · voice changer · left handed · neon pink streak · bright flashbang)

Clue 1 (Fractions of a number): "THE ROGUE AGENT DOES NOT HAVE A GLOW BADGE"
4/10 of 95 = 38 (T) · 4/10 of 10 = 4 (W) · 3/6 of 14 = 7 (S) · 4/8 of 68 = 34 (N) · 2/5 of 50 = 20 (D) · 1/6 of 30 = 5 (L) · 1/8 of 24 = 3 (R) · 1/2 of 60 = 30 (A) · 3/4 of 36 = 27 (G) · 1/6 of 156 = 26 (H) · 1/5 of 145 = 29 (U) · 1/5 of 10 = 2 (O) · 1/4 of 156 = 39 (E) · 7/10 of 30 = 21 (V) · 2/10 of 155 = 31 (B)
Clue 2 (Order of operations): "THE AGENT WROTE THE NOTE WITH THE LEFT HAND"
4 × 9 - 8 = 28 (T) · 7 × 4 - 19 = 9 (O) · 3 + 2 × 7 = 17 (H) · 2 + 2 × 2 = 6 (W) · 2 + 4 × 7 = 30 (D) · 8 × 6 - 6 = 42 (L) · 3 + 8 × 2 = 19 (E) · 9 × 5 - 5 = 40 (N) · 7 × 9 - 19 = 44 (I) · 11 × 7 - 13 = 64 (A) · 11 × 8 - 14 = 74 (R) · 60 + 2 × 8 = 76 (G) · 39 + 3 × 4 = 51 (F)
Clue 3 (Multiplication facts (1-12)): "A BRIGHT FLASHBANG WILL BLIND THIS AGENT"
2 × 11 = 22 (A) · 8 × 4 = 32 (F) · 1 × 5 = 5 (N) · 9 × 7 = 63 (I) · 10 × 10 = 100 (W) · 9 × 10 = 90 (E) · 12 × 8 = 96 (T) · 3 × 2 = 6 (L) · 7 × 11 = 77 (R) · 2 × 2 = 4 (H) · 10 × 6 = 60 (G) · 4 × 4 = 16 (S) · 1 × 7 = 7 (B) · 6 × 5 = 30 (D)
Clue 4 (Rounding): "THE SCENE HAD A NEON PINK HAIR STRAND"
Round 110 to the nearest ten = 110 (T) · Round 708 to the nearest hundred = 700 (H) · Round 920 to the nearest hundred = 900 (K) · Round 288 to the nearest ten = 290 (P) · Round 1,704 to the nearest thousand = 2000 (A) · Round 1,717 to the nearest hundred = 1700 (O) · Round 3,704 to the nearest hundred = 3700 (R) · Round 172 to the nearest ten = 170 (D) · Round 130 to the nearest ten = 130 (E) · Round 372 to the nearest ten = 370 (S) · Round 7,380 to the nearest thousand = 7000 (I) · Round 232 to the nearest ten = 230 (C) · Round 54 to the nearest ten = 50 (N)
Clue 5 (Fractions of a number): surviving statement (box 12) → Agent Stone
2/5 of 25 = 10 · 3/10 of 30 = 9 · 2/10 of 25 = 5 · 6/8 of 8 = 6 · 8/10 of 5 = 4 · 2/10 of 5 = 1 · 3/10 of 10 = 3 · 1/4 of 44 = 11 · 1/5 of 10 = 2 · 4/8 of 14 = 7 · 2/6 of 24 = 8

About this mystery

Grade level: Grade 5 math
Math topics: Fractions of a number, Order of operations, Multiplication, Rounding
Reading level: grades 5-6
Theme: The Case of the Missing Spy-Bot — set in the Secret Agent Academy training grounds
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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