🤖 RobotsGrade 5Reading: grades 3-4Place valueMultiplicationAdditionSubtractionDivision
The Robo-City Battery Heist
Alert! A sneaky Rogue Bot has broken into the high-security Robo-City Battery Vault. They stole the legendary Golden Microchip and zoomed away. We need you to look at the clues, solve the math, and find the culprit before the city runs out of power!
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 tool | special upgrade | sensor light color | head wire type | glitch trigger |
|---|---|---|---|---|---|
| Cruiser | laser welder | jet pack | blue led light | silver cables | loud music |
| Bolt | laser welder | shield bubble | orange led light | fiber optics | loud music |
| Buster | plasma cutter | jet pack | blue led light | fiber optics | loud music |
| Sprocket | rocket booster | super sonar | blue led light | fiber optics | magnet walls |
| Widget | sonic drill | turbo speed | blue led light | fiber optics | magnet walls |
| Beep | magnet arm | shield bubble | blue led light | silver cables | loud music |
| Scrappy | laser welder | turbo speed | orange led light | copper coils | loud music |
| Blinker | plasma cutter | turbo speed | blue led light | copper coils | loud music |
| Gasket | sonic drill | super sonar | blue led light | silver cables | water puddles |
| Sparky | plasma cutter | turbo speed | orange led light | fiber optics | magnet walls |
| Volt | plasma cutter | jet pack | blue led light | copper coils | magnet walls |
| Zippy | plasma cutter | shield bubble | blue led light | fiber optics | water puddles |
| Piston | rocket booster | jet pack | blue led light | fiber optics | magnet walls |
| Rivets | rocket booster | jet pack | blue led light | copper coils | magnet walls |
| Clinker | magnet arm | stealth cloak | blue led light | copper coils | loud music |
| Radar | plasma cutter | jet pack | orange led light | fiber optics | magnet walls |
| Turbo | magnet arm | stealth cloak | blue led light | fiber optics | magnet walls |
| Gizmo | laser welder | super sonar | blue led light | copper coils | magnet walls |
| Gearbox | rocket booster | turbo speed | orange led light | copper coils | loud music |
| Rusty | sonic drill | jet pack | blue led light | fiber optics | loud music |
| Chassis | magnet arm | shield bubble | blue led light | fiber optics | magnet walls |
Clue 1
Place value
The security vault screen uses a secret number code. Let us look at the place value of each digit to unlock the first clue.
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
500
8000
600
300
400
600
10
100
700
20
60
T
500
200
60
600
300
400
60
T
500
8000
10
9000
600
10
300
T
500
600
10
30
T
500
8000
2000
30
60
10
100
What is the value of the 5 in 738,566?T
What is the value of the 6 in 112,672?E
What is the value of the 7 in 961,793?Y
What is the value of the 3 in 74,326?S
What is the value of the 3 in 65,534?L
What is the value of the 6 in 11,463?O
What is the value of the 9 in 229,727?V
What is the value of the 1 in 39,916?A
What is the value of the 2 in 937,200?D
What is the value of the 2 in 682,448?C
What is the value of the 4 in 31,423?N
What is the value of the 1 in 92,199?K
What is the value of the 2 in 597,727?B
What is the value of the 8 in 168,327?H
0/14 letters found
Clue 2
Multiplication facts (1-12)
The bots keep spare power gears in neat rows on the shelf. If we multiply the rows, we can unlock the second clue.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
A
77
30
22
10
80
22
11
32
121
36
32
22
96
55
80
27
11
33
36
121
80
27
A
77
6
9
5
A
77
10
22
36
11 × 7 =A
5 × 6 =B
8 × 12 =O
2 × 11 =L
11 × 3 =N
5 × 11 =W
1 × 11 =I
1 × 9 =K
2 × 3 =R
5 × 1 =V
11 × 11 =H
10 × 8 =E
4 × 8 =G
4 × 9 =T
3 × 9 =D
5 × 2 =U
0/16 letters found
Clue 3
Addition
We found piles of dropped metal screws on the floor. Let us add them together to find the sum and unlock the third clue.
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
7438
8614
2943
5366
3503
5776
3503
T
7438
4181
8614
3766
5276
2943
5366
2943
9201
7328
2943
3834
5366
T
7438
8614
2943
3898
3834
8067
7328
2943
T
7438
8906
3834
2341
2341
4181
4120 + 3318 =T
5324 + 3290 =H
1591 + 3685 =V
2152 + 1351 =O
3663 + 1703 =R
1963 + 1803 =I
1793 + 1150 =E
4470 + 2858 =N
3504 + 2272 =B
4803 + 4103 =W
1899 + 1935 =A
1751 + 2147 =M
1088 + 1253 =L
3499 + 4568 =G
2565 + 1616 =S
5754 + 3447 =D
0/16 letters found
Clue 4
Subtraction
The master battery has lost some of its total energy charge. Let us subtract the leftover charge to unlock the fourth clue.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
G
7480
1538
6662
6808
5176
5540
G
7480
6802
5176
2582
7495
7688
6662
3129
6927
5176
3389
6622
6808
7495
7688
7495
1538
7495
6802
6927
2582
7495
5874
5176
5540
6581
11058 - 3578 =G
8201 - 2327 =H
11608 - 4946 =O
7355 - 2179 =I
7837 - 149 =R
9359 - 2557 =F
7728 - 1147 =D
3829 - 700 =P
7968 - 4579 =C
8511 - 1016 =E
9930 - 3308 =S
5837 - 3255 =B
8448 - 1640 =W
9125 - 2198 =T
5296 - 3758 =L
10494 - 4954 =N
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
We have to share the backup power packs equally among the rescue bots. Let us divide them up to unlock the final clue.
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
15 ÷ 5 = ?
49 ÷ 7 = ?
72 ÷ 8 = ?
99 ÷ 9 = ?
9 ÷ 9 = ?
44 ÷ 11 = ?
55 ÷ 11 = ?
24 ÷ 12 = ?
30 ÷ 5 = ?
120 ÷ 12 = ?
16 ÷ 2 = ?
Step 2 — cross out the sentence with each answer
1.The villain sliced the heavy hinges with a plasma cutter, then flew away using a sleek jet pack.
2.The villain sliced the heavy hinges with a plasma cutter, then located the exit tunnel with super sonar.
3.The villain flew over the high security fence with a rocket booster, then flew away using a sleek jet pack.
4.The villain pulled the metal safe with a magnet arm, then faded from sight using a stealth cloak.
5.The villain pulled the metal safe with a magnet arm, then located the exit tunnel with super sonar.
6.The villain drilled through the concrete with a sonic drill, then flew away using a sleek jet pack.
7.The villain drilled through the concrete with a sonic drill, then dashed past the security guards with turbo speed.
8.The villain pulled the metal safe with a magnet arm, then dashed past the security guards with turbo speed.
9.The villain pulled the metal safe with a magnet arm, then blocked the laser traps with a shield bubble.
10.The villain melted the vault lock with a laser welder, then located the exit tunnel with super sonar.
11.The villain flew over the high security fence with a rocket booster, then dashed past the security guards with turbo speed.
12.The villain flew over the high security fence with a rocket booster, then located the exit tunnel with super sonar.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Robo-City Battery Heist
Culprit: Sprocket (rocket booster · super sonar · blue led light · fiber optics · magnet walls)
- Clue 1 (Place value): "THE SNEAKY BOT DOES NOT HAVE A STEALTH CLOAK"What is the value of the 5 in 738,566? = 500 (T) · What is the value of the 6 in 112,672? = 600 (E) · What is the value of the 7 in 961,793? = 700 (Y) · What is the value of the 3 in 74,326? = 300 (S) · What is the value of the 3 in 65,534? = 30 (L) · What is the value of the 6 in 11,463? = 60 (O) · What is the value of the 9 in 229,727? = 9000 (V) · What is the value of the 1 in 39,916? = 10 (A) · What is the value of the 2 in 937,200? = 200 (D) · What is the value of the 2 in 682,448? = 2000 (C) · What is the value of the 4 in 31,423? = 400 (N) · What is the value of the 1 in 92,199? = 100 (K) · What is the value of the 2 in 597,727? = 20 (B) · What is the value of the 8 in 168,327? = 8000 (H)
- Clue 2 (Multiplication facts (1-12)): "A BLUE LIGHT GLOWED IN THE DARK VAULT"11 × 7 = 77 (A) · 5 × 6 = 30 (B) · 8 × 12 = 96 (O) · 2 × 11 = 22 (L) · 11 × 3 = 33 (N) · 5 × 11 = 55 (W) · 1 × 11 = 11 (I) · 1 × 9 = 9 (K) · 2 × 3 = 6 (R) · 5 × 1 = 5 (V) · 11 × 11 = 121 (H) · 10 × 8 = 80 (E) · 4 × 8 = 32 (G) · 4 × 9 = 36 (T) · 3 × 9 = 27 (D) · 5 × 2 = 10 (U)
- Clue 3 (Addition): "THE ROBOT SHIVERED NEAR THE MAGNET WALLS"4120 + 3318 = 7438 (T) · 5324 + 3290 = 8614 (H) · 1591 + 3685 = 5276 (V) · 2152 + 1351 = 3503 (O) · 3663 + 1703 = 5366 (R) · 1963 + 1803 = 3766 (I) · 1793 + 1150 = 2943 (E) · 4470 + 2858 = 7328 (N) · 3504 + 2272 = 5776 (B) · 4803 + 4103 = 8906 (W) · 1899 + 1935 = 3834 (A) · 1751 + 2147 = 3898 (M) · 1088 + 1253 = 2341 (L) · 3499 + 4568 = 8067 (G) · 2565 + 1616 = 4181 (S) · 5754 + 3447 = 9201 (D)
- Clue 4 (Subtraction): "GLOWING FIBER OPTICS WERE LEFT BEHIND"11058 - 3578 = 7480 (G) · 8201 - 2327 = 5874 (H) · 11608 - 4946 = 6662 (O) · 7355 - 2179 = 5176 (I) · 7837 - 149 = 7688 (R) · 9359 - 2557 = 6802 (F) · 7728 - 1147 = 6581 (D) · 3829 - 700 = 3129 (P) · 7968 - 4579 = 3389 (C) · 8511 - 1016 = 7495 (E) · 9930 - 3308 = 6622 (S) · 5837 - 3255 = 2582 (B) · 8448 - 1640 = 6808 (W) · 9125 - 2198 = 6927 (T) · 5296 - 3758 = 1538 (L) · 10494 - 4954 = 5540 (N)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Sprocket15 ÷ 5 = 3 · 49 ÷ 7 = 7 · 72 ÷ 8 = 9 · 99 ÷ 9 = 11 · 9 ÷ 9 = 1 · 44 ÷ 11 = 4 · 55 ÷ 11 = 5 · 24 ÷ 12 = 2 · 30 ÷ 5 = 6 · 120 ÷ 12 = 10 · 16 ÷ 2 = 8
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Place value, Multiplication, Addition, Subtraction, Division
- Reading level
- grades 3-4
- Theme
- The Robo-City Battery Heist — set in The Robo-City Battery Vault
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects