🔎 MoneyGrade 2Reading: grades 7-9Place valueAdditionSubtractionMultiplicationMissing addends
The Great Vault Heist
Millions in pristine banknotes and precious metal ingots have vanished overnight from the high-security subterranean treasury vault. The master alarm was quietly bypassed, leaving behind cryptic financial logs and subtle evidence.
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 | Signature Tool | Heist Gadget | Stance | Disguise Wig | Security Flaw |
|---|---|---|---|---|---|
| Goldie Vault | Laser Cutter | Drawn Decoy | Right Handed | Neon Buzzcut | Squeaky Shoes |
| Vaultman Vance | Decrypter Chip | Smoke Pellet | Left Handed | Silver Pompadour | Squeaky Shoes |
| Richy Rich | Thermal Drill | Smoke Pellet | Left Handed | Neon Buzzcut | Shiny Cufflinks |
| Sterling Cash | Thermal Drill | Grappling Hook | Left Handed | Neon Buzzcut | Squeaky Shoes |
| Penny Wise | Laser Cutter | Smoke Pellet | Right Handed | Neon Buzzcut | Loud Footsteps |
| Cornelius Vanderbilt | Laser Cutter | Grappling Hook | Left Handed | Neon Buzzcut | Squeaky Shoes |
| Andrew Carnegie | Keycard Cloner | EMP Grenade | Right Handed | Neon Buzzcut | Squeaky Shoes |
| Frank Currency | Thermal Drill | Drawn Decoy | Right Handed | Auburn Bob | Shiny Cufflinks |
| Chase Morgan | Decrypter Chip | Smoke Pellet | Left Handed | Silver Pompadour | Loud Footsteps |
| Coin Carter | Thermal Drill | Grappling Hook | Right Handed | Neon Buzzcut | Shiny Cufflinks |
| Diamond Dan | Decrypter Chip | Drawn Decoy | Left Handed | Neon Buzzcut | Shiny Cufflinks |
| Janet Yellen | Laser Cutter | Signal Jammer | Right Handed | Neon Buzzcut | Shiny Cufflinks |
| Ledger Leigh | Decrypter Chip | Signal Jammer | Left Handed | Silver Pompadour | Shiny Cufflinks |
| Penny Pinch | Keycard Cloner | Drawn Decoy | Right Handed | Neon Buzzcut | Shiny Cufflinks |
| Banker Bob | Laser Cutter | Signal Jammer | Right Handed | Silver Pompadour | Shiny Cufflinks |
| Elon Musk | Decrypter Chip | Smoke Pellet | Right Handed | Auburn Bob | Loud Footsteps |
| Tally Taylor | Vault Stethoscope | EMP Grenade | Right Handed | Neon Buzzcut | Squeaky Shoes |
| Cash Calloway | Vault Stethoscope | Smoke Pellet | Left Handed | Neon Buzzcut | Squeaky Shoes |
| Amber Mint | Keycard Cloner | Signal Jammer | Right Handed | Neon Buzzcut | Shiny Cufflinks |
| Buck Hunter | Laser Cutter | EMP Grenade | Left Handed | Silver Pompadour | Squeaky Shoes |
| Bullion Bill | Decrypter Chip | EMP Grenade | Right Handed | Neon Buzzcut | Shiny Cufflinks |
Clue 1
Place value
The head accountant checked the digital mint display to see which digit held the tens position.
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
90
72
44
70
71
70
81
44
32
T
90
73
57
73
47
36
T
90
71
70
44
37
46
77
37
81
81
54
57
47
46
72
36
36
12
What number has 9 tens and 0 ones?T
What number has 5 tens and 7 ones?I
What number has 4 tens and 6 ones?G
What number has 7 tens and 3 ones?D
What number has 3 tens and 7 ones?A
What number has 7 tens and 0 ones?S
What number has 4 tens and 7 ones?N
What number has 4 tens and 4 ones?E
What number has 8 tens and 1 one?P
What number has 7 tens and 7 ones?R
What number has 7 tens and 2 ones?H
What number has 5 tens and 4 ones?L
What number has 3 tens and 6 ones?O
What number has 7 tens and 1 one?U
What number has 1 ten and 2 ones?K
What number has 3 tens and 2 ones?C
0/16 letters found
Clue 2
Addition
Security officers added together the stack of cash trays collected from the lobby.
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
26
76
40
37
49
37
94
40
60
T
26
37
86
30
59
40
92
90
47
30
75
86
T
26
76
82
86
30
76
T
26
76
45
59
92
10 + 16 =T
51 + 41 =D
34 + 48 =R
26 + 11 =S
39 + 21 =C
43 + 43 =I
42 + 48 =L
35 + 41 =H
41 + 18 =N
14 + 33 =O
30 + 45 =W
21 + 24 =A
33 + 16 =U
26 + 14 =E
14 + 16 =G
42 + 52 =P
0/16 letters found
Clue 3
Subtraction
Investigators calculated how much bullion remained after subtracting the stolen bars.
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
38
61
69
36
86
26
69
53
86
36
86
17
71
61
T
38
71
88
41
15
T
38
41
15
71
59
61
41
15
29
36
17
77
77
88
41
15
67
59
49 - 11 =T
77 - 16 =H
64 - 11 =R
90 - 31 =S
106 - 39 =K
52 - 16 =C
109 - 21 =L
49 - 23 =M
54 - 39 =N
124 - 38 =A
110 - 33 =F
106 - 37 =E
34 - 5 =Y
50 - 33 =U
73 - 32 =I
97 - 26 =G
0/16 letters found
Clue 4
Multiplication facts (1-12)
The vault manager counted equal stacks of currency banded into tight bundles.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
S
12
84
21
15
72
108
7
70
S
12
3
1
7
22
108
99
144
7
S
12
S
12
144
1
80
84
1
80
80
84
1
80
90
15
35
35
21
15
7
4 × 3 =S
1 × 7 =T
11 × 9 =G
3 × 7 =C
3 × 1 =P
12 × 7 =E
7 × 5 =Z
12 × 6 =R
3 × 5 =U
9 × 12 =I
9 × 10 =B
8 × 10 =N
12 × 12 =H
1 × 1 =O
11 × 2 =L
10 × 7 =Y
0/16 letters found
Clue 5
Missing addends — the last clue
The auditor calculated how many missing gold coins were needed to complete the inventory record.
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 + ___ = 21
9 + ___ = 16
8 + ___ = 12
2 + ___ = 10
7 + ___ = 18
1 + ___ = 4
6 + ___ = 7
8 + ___ = 17
3 + ___ = 9
9 + ___ = 19
2 + ___ = 4
Step 2 — cross out the sentence with each answer
1.The villain bored through the vault using a thermal drill, then vanished into the room using a smoke pellet.
2.The villain copied the master badge using a keycard cloner, then escaped up to the roof on a grappling hook.
3.The villain bypassed the keypad with a decrypter chip, then confused the guards using a drawn decoy.
4.The villain sliced open the safe with a laser cutter, then blocked radio calls with a signal jammer.
5.The villain bypassed the keypad with a decrypter chip, then disabled the cameras with an emp grenade.
6.The villain bypassed the keypad with a decrypter chip, then escaped up to the roof on a grappling hook.
7.The villain copied the master badge using a keycard cloner, then confused the guards using a drawn decoy.
8.The villain cracked the combination with a vault stethoscope, then vanished into the room using a smoke pellet.
9.The villain cracked the combination with a vault stethoscope, then blocked radio calls with a signal jammer.
10.The villain bypassed the keypad with a decrypter chip, then vanished into the room using a smoke pellet.
11.The villain bypassed the keypad with a decrypter chip, then blocked radio calls with a signal jammer.
12.The villain copied the master badge using a keycard cloner, then blocked radio calls with a signal jammer.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Vault Heist
Culprit: Bullion Bill (Decrypter Chip · EMP Grenade · Right Handed · Neon Buzzcut · Shiny Cufflinks)
- Clue 1 (Place value): "THE SUSPECT DID NOT USE A GRAPPLING HOOK"What number has 9 tens and 0 ones? = 90 (T) · What number has 5 tens and 7 ones? = 57 (I) · What number has 4 tens and 6 ones? = 46 (G) · What number has 7 tens and 3 ones? = 73 (D) · What number has 3 tens and 7 ones? = 37 (A) · What number has 7 tens and 0 ones? = 70 (S) · What number has 4 tens and 7 ones? = 47 (N) · What number has 4 tens and 4 ones? = 44 (E) · What number has 8 tens and 1 one? = 81 (P) · What number has 7 tens and 7 ones? = 77 (R) · What number has 7 tens and 2 ones? = 72 (H) · What number has 5 tens and 4 ones? = 54 (L) · What number has 3 tens and 6 ones? = 36 (O) · What number has 7 tens and 1 one? = 71 (U) · What number has 1 ten and 2 ones? = 12 (K) · What number has 3 tens and 2 ones? = 32 (C)
- Clue 2 (Addition): "THE SUSPECT SIGNED LOG WITH RIGHT HAND"10 + 16 = 26 (T) · 51 + 41 = 92 (D) · 34 + 48 = 82 (R) · 26 + 11 = 37 (S) · 39 + 21 = 60 (C) · 43 + 43 = 86 (I) · 42 + 48 = 90 (L) · 35 + 41 = 76 (H) · 41 + 18 = 59 (N) · 14 + 33 = 47 (O) · 30 + 45 = 75 (W) · 21 + 24 = 45 (A) · 33 + 16 = 49 (U) · 26 + 14 = 40 (E) · 14 + 16 = 30 (G) · 42 + 52 = 94 (P)
- Clue 3 (Subtraction): "THE CAMERA CAUGHT GLINTING SHINY CUFFLINKS"49 - 11 = 38 (T) · 77 - 16 = 61 (H) · 64 - 11 = 53 (R) · 90 - 31 = 59 (S) · 106 - 39 = 67 (K) · 52 - 16 = 36 (C) · 109 - 21 = 88 (L) · 49 - 23 = 26 (M) · 54 - 39 = 15 (N) · 124 - 38 = 86 (A) · 110 - 33 = 77 (F) · 106 - 37 = 69 (E) · 34 - 5 = 29 (Y) · 50 - 33 = 17 (U) · 73 - 32 = 41 (I) · 97 - 26 = 71 (G)
- Clue 4 (Multiplication facts (1-12)): "SECURITY SPOTLIGHTS SHONE ON NEON BUZZCUT"4 × 3 = 12 (S) · 1 × 7 = 7 (T) · 11 × 9 = 99 (G) · 3 × 7 = 21 (C) · 3 × 1 = 3 (P) · 12 × 7 = 84 (E) · 7 × 5 = 35 (Z) · 12 × 6 = 72 (R) · 3 × 5 = 15 (U) · 9 × 12 = 108 (I) · 9 × 10 = 90 (B) · 8 × 10 = 80 (N) · 12 × 12 = 144 (H) · 1 × 1 = 1 (O) · 11 × 2 = 22 (L) · 10 × 7 = 70 (Y)
- Clue 5 (Missing addends): surviving statement (box 5) → Bullion Bill9 + ___ = 21 = 12 · 9 + ___ = 16 = 7 · 8 + ___ = 12 = 4 · 2 + ___ = 10 = 8 · 7 + ___ = 18 = 11 · 1 + ___ = 4 = 3 · 6 + ___ = 7 = 1 · 8 + ___ = 17 = 9 · 3 + ___ = 9 = 6 · 9 + ___ = 19 = 10 · 2 + ___ = 4 = 2
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Place value, Addition, Subtraction, Multiplication, Missing addends
- Reading level
- grades 7-9
- Theme
- The Great Vault Heist — set in The Central Reserve Treasury Vault
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects