Grade 6Reading: grades 3-4MultiplicationPlace valueAdditionSubtractionDivision
The Spy Island Mystery
A mysterious thief sneaked into the Spy Island vault and swiped the Golden Decoder! The Stealth Squad needs your help to crack the codes and catch the rogue cadet before they escape the island.
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 Gear | Suit Mod | Stance | Hair Dye | Distraction |
|---|---|---|---|---|---|
| Mac Gyver | Hologram Belt | Spy Drone | Right-handed writer | Lime Green Hair | Allergic to feathers |
| Sally Sparrow | Grapple Glove | Glider Cape | Right-handed writer | Neon Blue Hair | Fear of frogs |
| Lara Croft | Jet Boots | Camo Cloak | Left-handed writer | Lime Green Hair | Allergic to feathers |
| Gwen Tennyson | Jet Boots | Turbo Thrusters | Right-handed writer | Bright Orange Hair | Allergic to feathers |
| Indy Jones | Sonar Visor | Glider Cape | Left-handed writer | Lime Green Hair | Allergic to feathers |
| Joe Hardy | Sonar Visor | Sticky Boots | Left-handed writer | Bright Orange Hair | Allergic to feathers |
| Cody Martin | Sonar Visor | Camo Cloak | Left-handed writer | Lime Green Hair | Allergic to feathers |
| Tucker Foley | Hologram Belt | Sticky Boots | Left-handed writer | Bright Orange Hair | Loves bubblegum |
| Sam Manson | Grapple Glove | Glider Cape | Left-handed writer | Lime Green Hair | Allergic to feathers |
| Nancy Drew | Grapple Glove | Turbo Thrusters | Left-handed writer | Lime Green Hair | Allergic to feathers |
| Tintin Snowy | Grapple Glove | Sticky Boots | Right-handed writer | Neon Blue Hair | Allergic to feathers |
| Alex Rider | Laser Watch | Spy Drone | Left-handed writer | Lime Green Hair | Loves bubblegum |
| Carmen Crux | Sonar Visor | Spy Drone | Left-handed writer | Lime Green Hair | Loves bubblegum |
| Zack Martin | Sonar Visor | Spy Drone | Right-handed writer | Lime Green Hair | Loves bubblegum |
| Danny Fenton | Jet Boots | Spy Drone | Right-handed writer | Bright Orange Hair | Allergic to feathers |
| John Watson | Hologram Belt | Spy Drone | Left-handed writer | Lime Green Hair | Fear of frogs |
| Penny Gadget | Laser Watch | Turbo Thrusters | Left-handed writer | Lime Green Hair | Allergic to feathers |
| Leo Valdez | Grapple Glove | Sticky Boots | Right-handed writer | Bright Orange Hair | Allergic to feathers |
| Sherlock Holmes | Sonar Visor | Spy Drone | Right-handed writer | Bright Orange Hair | Loves bubblegum |
| Ron Stop | Hologram Belt | Camo Cloak | Right-handed writer | Bright Orange Hair | Allergic to feathers |
| Cody Banks | Hologram Belt | Turbo Thrusters | Right-handed writer | Neon Blue Hair | Allergic to feathers |
Clue 1
Multiplication facts (1-12)
The villain left the training room in a big mess. We found boxes of spy gear stacked in equal rows. Let's multiply the rows to find how many gadgets are missing!
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
33
80
24
T
33
3
96
25
24
T
33
15
88
24
16
40
88
T
33
44
16
24
T
33
44
96
77
88
T
33
80
96
44
16
T
33
24
96
16
3 × 11 =T
11 × 7 =B
2 × 8 =S
10 × 8 =H
11 × 4 =U
5 × 8 =N
3 × 5 =D
12 × 8 =R
5 × 5 =G
11 × 8 =O
3 × 1 =A
2 × 12 =E
0/12 letters found
Clue 2
Place value
A locked keypad stops us from entering the control room. Each digit on the screen has a special place value. We must look at the tens and hundreds places to crack the code!
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
30
1000
300
4000
500
90
T
30
90
5000
800
4000
60
6000
700
300
50
T
30
1000
60
5000
600
300
600
80
5000
700
8000
What is the value of the 3 in 25,530?T
What is the value of the 8 in 46,285?O
What is the value of the 8 in 48,246?Y
What is the value of the 9 in 50,290?I
What is the value of the 7 in 926,729?L
What is the value of the 5 in 917,757?F
What is the value of the 1 in 831,223?H
What is the value of the 6 in 118,620?D
What is the value of the 5 in 75,010?N
What is the value of the 3 in 59,316?E
What is the value of the 8 in 75,827?G
What is the value of the 6 in 20,364?A
What is the value of the 5 in 106,521?R
What is the value of the 4 in 384,552?W
What is the value of the 6 in 96,801?S
0/15 letters found
Clue 3
Addition
We found footprints scattered in different parts of the yard. If we add all the sets of prints together, we can map the villain's escape path!
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
6483
6252
9122
9833
4461
4249
4249
5067
4461
4821
8573
4821
9122
9122
5464
9122
4929
5067
T
6483
4584
9122
5067
T
6483
6252
9122
3060
8573
2790 + 3693 =T
1453 + 3008 =I
6214 + 2908 =E
3162 + 2302 =Z
3191 + 3061 =H
1021 + 2039 =R
3260 + 1561 =N
4947 + 3626 =S
2118 + 2949 =A
6466 + 3367 =V
2238 + 2011 =L
1616 + 2968 =F
3441 + 1488 =D
0/13 letters found
Clue 4
Subtraction
The inventory sheet says we started with a full crate of laser pens. Some are gone now. We need to subtract the remaining pens to see how many the thief stole!
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
W
2483
1568
3402
2694
5836
2488
4309
5255
2150
7673
1568
1289
2257
1568
1568
2488
6445
5254
2150
2257
2575
3766
2257
5254
2488
4309
2575
7159 - 4676 =W
8739 - 2294 =H
8495 - 4186 =D
11992 - 4319 =M
5857 - 3163 =O
7293 - 3527 =T
6200 - 364 =U
1682 - 393 =G
8075 - 2820 =L
6381 - 3893 =N
4725 - 2150 =S
8937 - 3683 =A
3533 - 131 =F
5216 - 2959 =R
1967 - 399 =E
3152 - 1002 =I
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
We recovered a stack of secret files, but they are scrambled. If we divide the papers equally among our team, we can decode them much faster!
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
36 ÷ 9 = ?
56 ÷ 7 = ?
5 ÷ 5 = ?
40 ÷ 8 = ?
15 ÷ 5 = ?
12 ÷ 2 = ?
108 ÷ 12 = ?
88 ÷ 8 = ?
21 ÷ 3 = ?
96 ÷ 8 = ?
10 ÷ 1 = ?
Step 2 — cross out the sentence with each answer
1.The villain spots the secret trapdoors with a sonar visor, then disappears through a hidden ceiling hatch.
2.The villain zooms past the guard with jet boots, then disappears through a hidden ceiling hatch.
3.The villain beams a path forward using a laser watch, then escapes in a stealth mini-sub.
4.The villain spots the secret trapdoors with a sonar visor, then glides out the window with a wing-suit.
5.The villain beams a path forward using a laser watch, then glides out the window with a wing-suit.
6.The villain beams a path forward using a laser watch, then leaves a trail of orange spy dust.
7.The villain zooms past the guard with jet boots, then escapes in a stealth mini-sub.
8.The villain uses a grapple glove to climb the wall, then glides out the window with a wing-suit.
9.The villain zooms past the guard with jet boots, then glides out the window with a wing-suit.
10.The villain beams a path forward using a laser watch, then disappears through a hidden ceiling hatch.
11.The villain sneaks through the halls with a hologram belt, then glides out the window with a wing-suit.
12.The villain spots the secret trapdoors with a sonar visor, then drops a flashing flashbang decoy.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Spy Island Mystery
Culprit: Lara Croft (Jet Boots · Camo Cloak · Left-handed writer · Lime Green Hair · Allergic to feathers)
- Clue 1 (Multiplication facts (1-12)): "THE TARGET DOES NOT USE TURBO THRUSTERS"3 × 11 = 33 (T) · 11 × 7 = 77 (B) · 2 × 8 = 16 (S) · 10 × 8 = 80 (H) · 11 × 4 = 44 (U) · 5 × 8 = 40 (N) · 3 × 5 = 15 (D) · 12 × 8 = 96 (R) · 5 × 5 = 25 (G) · 11 × 8 = 88 (O) · 3 × 1 = 3 (A) · 2 × 12 = 24 (E)
- Clue 2 (Place value): "THE WRITING WAS LEFT HANDED ONLY"What is the value of the 3 in 25,530? = 30 (T) · What is the value of the 8 in 46,285? = 80 (O) · What is the value of the 8 in 48,246? = 8000 (Y) · What is the value of the 9 in 50,290? = 90 (I) · What is the value of the 7 in 926,729? = 700 (L) · What is the value of the 5 in 917,757? = 50 (F) · What is the value of the 1 in 831,223? = 1000 (H) · What is the value of the 6 in 118,620? = 600 (D) · What is the value of the 5 in 75,010? = 5000 (N) · What is the value of the 3 in 59,316? = 300 (E) · What is the value of the 8 in 75,827? = 800 (G) · What is the value of the 6 in 20,364? = 60 (A) · What is the value of the 5 in 106,521? = 500 (R) · What is the value of the 4 in 384,552? = 4000 (W) · What is the value of the 6 in 96,801? = 6000 (S)
- Clue 3 (Addition): "THE VILLAIN SNEEZED AT FEATHERS"2790 + 3693 = 6483 (T) · 1453 + 3008 = 4461 (I) · 6214 + 2908 = 9122 (E) · 3162 + 2302 = 5464 (Z) · 3191 + 3061 = 6252 (H) · 1021 + 2039 = 3060 (R) · 3260 + 1561 = 4821 (N) · 4947 + 3626 = 8573 (S) · 2118 + 2949 = 5067 (A) · 6466 + 3367 = 9833 (V) · 2238 + 2011 = 4249 (L) · 1616 + 2968 = 4584 (F) · 3441 + 1488 = 4929 (D)
- Clue 4 (Subtraction): "WE FOUND LIME GREEN HAIR STRANDS"7159 - 4676 = 2483 (W) · 8739 - 2294 = 6445 (H) · 8495 - 4186 = 4309 (D) · 11992 - 4319 = 7673 (M) · 5857 - 3163 = 2694 (O) · 7293 - 3527 = 3766 (T) · 6200 - 364 = 5836 (U) · 1682 - 393 = 1289 (G) · 8075 - 2820 = 5255 (L) · 6381 - 3893 = 2488 (N) · 4725 - 2150 = 2575 (S) · 8937 - 3683 = 5254 (A) · 3533 - 131 = 3402 (F) · 5216 - 2959 = 2257 (R) · 1967 - 399 = 1568 (E) · 3152 - 1002 = 2150 (I)
- Clue 5 (Division facts (1-12)): surviving statement (box 2) → Lara Croft36 ÷ 9 = 4 · 56 ÷ 7 = 8 · 5 ÷ 5 = 1 · 40 ÷ 8 = 5 · 15 ÷ 5 = 3 · 12 ÷ 2 = 6 · 108 ÷ 12 = 9 · 88 ÷ 8 = 11 · 21 ÷ 3 = 7 · 96 ÷ 8 = 12 · 10 ÷ 1 = 10
About this mystery
- Grade level
- Grade 6 math
- Math topics
- Multiplication, Place value, Addition, Subtraction, Division
- Reading level
- grades 3-4
- Theme
- The Spy Island Mystery — set in Spy Island Academy
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects