🤖 Robots, MinecraftGrade 4Reading: grades 3-4Place valueFractions of a numberRoundingAddition
The Glitch at Block Grid Citadel
A wild Rogue Bot has scrambled the blueprints at Block Grid Citadel! Track down the evidence and find out which suspect built the stray 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 | Robot Module | Block Armor | Sensor Status | Antenna Style | Glitch Trigger |
|---|---|---|---|---|---|
| Forger Frank | Rocket Thruster | Copper Casing | Left Sensor Glowing | Dish Antenna | Lava Bucket |
| Volt Victor | Piston Arm | Redstone Core | Right Sensor Glowing | Cube Antenna | Redstone Signal |
| Gearhead Sam | Rocket Thruster | Emerald Plating | Left Sensor Glowing | Cube Antenna | Redstone Signal |
| Logic Luke | Rocket Thruster | Emerald Plating | Right Sensor Glowing | Cube Antenna | Splash of Water |
| Data Nora | Laser Cannon | Copper Casing | Left Sensor Glowing | Cube Antenna | Splash of Water |
| Robo Rita | Rocket Thruster | Emerald Plating | Right Sensor Glowing | Cube Antenna | Lava Bucket |
| Coder Clara | Magnetic Grabber | Redstone Core | Left Sensor Glowing | Spun Wire Antenna | Lava Bucket |
| Rusty Rex | Magnetic Grabber | Copper Casing | Right Sensor Glowing | Cube Antenna | Redstone Signal |
| Widget Wally | Sonic Screech | Redstone Core | Right Sensor Glowing | Dish Antenna | Splash of Water |
| Digit Dave | Laser Cannon | Emerald Plating | Left Sensor Glowing | Spun Wire Antenna | Redstone Signal |
| Sparky Stan | Sonic Screech | Copper Casing | Left Sensor Glowing | Spun Wire Antenna | Redstone Signal |
| Byte Bella | Laser Cannon | Emerald Plating | Right Sensor Glowing | Spun Wire Antenna | Splash of Water |
| Blocky Bob | Laser Cannon | Emerald Plating | Right Sensor Glowing | Dish Antenna | Redstone Signal |
| Builder Alex | Piston Arm | Redstone Core | Left Sensor Glowing | Dish Antenna | Splash of Water |
| Chip Charlie | Laser Cannon | Obsidian Shell | Right Sensor Glowing | Cube Antenna | Splash of Water |
| Vector Max | Magnetic Grabber | Redstone Core | Right Sensor Glowing | Cube Antenna | Splash of Water |
| Crafty Ben | Piston Arm | Emerald Plating | Right Sensor Glowing | Dish Antenna | Redstone Signal |
| Tinker Tim | Piston Arm | Diamond Shield | Right Sensor Glowing | Dish Antenna | Splash of Water |
| Anvil Amy | Piston Arm | Redstone Core | Right Sensor Glowing | Cube Antenna | Splash of Water |
| Matrix Mia | Sonic Screech | Emerald Plating | Left Sensor Glowing | Dish Antenna | Lava Bucket |
| Sprocket Sue | Piston Arm | Diamond Shield | Right Sensor Glowing | Cube Antenna | Splash of Water |
Clue 1
Place value
The security terminal displays the villain's code in digital digits. Read the place value to clear the noise.
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
4000
7000
600
70
80
500
500
300
80
8000
100
20
600
400
8000
20
T
4000
5000
400
600
600
3000
600
9000
300
500
100
700
500
300
T
4000
80
8000
50
What is the value of the 4 in 4,606?T
What is the value of the 9 in 39,014?R
What is the value of the 6 in 652?E
What is the value of the 5 in 15,722?U
What is the value of the 3 in 7,374?A
What is the value of the 5 in 7,054?G
What is the value of the 3 in 63,480?M
What is the value of the 7 in 5,474?V
What is the value of the 5 in 7,504?L
What is the value of the 8 in 1,981?I
What is the value of the 2 in 7,821?O
What is the value of the 7 in 37,239?H
What is the value of the 8 in 8,691?N
What is the value of the 7 in 720?P
What is the value of the 4 in 425?S
What is the value of the 1 in 4,165?D
0/16 letters found
Clue 2
Fractions of a number
A pile of redstone dust was left behind. Solve the fraction to figure out how much power was used.
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
5
21
14
12
40
29
29
29
24
W
5
23
21
38
7
14
29
40
12
29
17
23
38
26
17
W
5
21
12
38
39
23
21
38
7
14
1/8 of 40 =W
1/5 of 195 =B
1/3 of 72 =A
5/10 of 80 =E
1/5 of 130 =L
4/8 of 42 =I
4/10 of 95 =G
1/4 of 56 =T
4/8 of 58 =S
2/10 of 85 =O
5/10 of 46 =R
1/6 of 42 =H
1/6 of 72 =N
0/13 letters found
Clue 3
Rounding
The scanner radar only shows rounded power readings. Round the number to locate the target sector.
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
9000
1100
3000
90
2900
170
300
230
1100
170
130
170
130
30
3000
200
20
W
9000
900
3000
130
90
2900
20
70
30
90
1700
20
3000
Round 9,351 to the nearest thousandW
Round 2,915 to the nearest hundredR
Round 70 to the nearest tenG
Round 2,832 to the nearest thousandT
Round 853 to the nearest hundredN
Round 1,667 to the nearest hundredB
Round 19 to the nearest tenO
Round 133 to the nearest tenH
Round 33 to the nearest tenU
Round 92 to the nearest tenE
Round 166 to the nearest tenS
Round 220 to the nearest hundredD
Round 287 to the nearest hundredP
Round 1,074 to the nearest hundredA
Round 234 to the nearest tenL
0/15 letters found
Clue 4
Addition
You tally the scattered metal blocks left at the scene. Add them up to reveal the next piece of evidence.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
F
5298
5724
7888
4101
3117
4782
2244
7888
2449
9367
4782
4101
6342
9367
4101
4101
4782
4782
6342
6342
9459
9367
3285
2244
9367
4101
9367
2160 + 3138 =F
2980 + 2744 =O
3879 + 5488 =E
1530 + 3252 =A
1505 + 2596 =N
1224 + 1020 =C
1981 + 1304 =S
783 + 1666 =B
1339 + 1778 =D
2078 + 4264 =T
4368 + 5091 =H
3391 + 4497 =U
0/12 letters found
Clue 5
Fractions of a number — the last clue
The robot storage bins were partially opened. Calculate the fraction to find the last 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
3/5 of 5 = ?
2/8 of 4 = ?
2/4 of 20 = ?
4/5 of 10 = ?
2/3 of 3 = ?
1/3 of 36 = ?
2/4 of 14 = ?
1/4 of 16 = ?
1/8 of 40 = ?
3/5 of 15 = ?
3/6 of 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain extended a piston arm, then raised a diamond shield.
2.The villain fired a laser cannon, then sealed copper casing.
3.The villain swung a magnetic grabber, then activated a redstone core.
4.The villain swung a magnetic grabber, then sealed copper casing.
5.The villain swung a magnetic grabber, then locked emerald plating.
6.The villain fired a laser cannon, then raised a diamond shield.
7.The villain blasted a sonic screech, then locked emerald plating.
8.The villain blasted a sonic screech, then fortified an obsidian shell.
9.The villain swung a magnetic grabber, then raised a diamond shield.
10.The villain extended a piston arm, then activated a redstone core.
11.The villain fired a laser cannon, then fortified an obsidian shell.
12.The villain fired a rocket thruster, then raised a diamond shield.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Glitch at Block Grid Citadel
Culprit: Chip Charlie (Laser Cannon · Obsidian Shell · Right Sensor Glowing · Cube Antenna · Splash of Water)
- Clue 1 (Place value): "THE VILLAIN DOES NOT USE EMERALD PLATING"What is the value of the 4 in 4,606? = 4000 (T) · What is the value of the 9 in 39,014? = 9000 (R) · What is the value of the 6 in 652? = 600 (E) · What is the value of the 5 in 15,722? = 5000 (U) · What is the value of the 3 in 7,374? = 300 (A) · What is the value of the 5 in 7,054? = 50 (G) · What is the value of the 3 in 63,480? = 3000 (M) · What is the value of the 7 in 5,474? = 70 (V) · What is the value of the 5 in 7,504? = 500 (L) · What is the value of the 8 in 1,981? = 80 (I) · What is the value of the 2 in 7,821? = 20 (O) · What is the value of the 7 in 37,239? = 7000 (H) · What is the value of the 8 in 8,691? = 8000 (N) · What is the value of the 7 in 720? = 700 (P) · What is the value of the 4 in 425? = 400 (S) · What is the value of the 1 in 4,165? = 100 (D)
- Clue 2 (Fractions of a number): "WITNESS SAW RIGHT SENSOR GLOWING BRIGHT"1/8 of 40 = 5 (W) · 1/5 of 195 = 39 (B) · 1/3 of 72 = 24 (A) · 5/10 of 80 = 40 (E) · 1/5 of 130 = 26 (L) · 4/8 of 42 = 21 (I) · 4/10 of 95 = 38 (G) · 1/4 of 56 = 14 (T) · 4/8 of 58 = 29 (S) · 2/10 of 85 = 17 (O) · 5/10 of 46 = 23 (R) · 1/6 of 42 = 7 (H) · 1/6 of 72 = 12 (N)
- Clue 3 (Rounding): "WATER SPLASH SHUT DOWN THE ROGUE BOT"Round 9,351 to the nearest thousand = 9000 (W) · Round 2,915 to the nearest hundred = 2900 (R) · Round 70 to the nearest ten = 70 (G) · Round 2,832 to the nearest thousand = 3000 (T) · Round 853 to the nearest hundred = 900 (N) · Round 1,667 to the nearest hundred = 1700 (B) · Round 19 to the nearest ten = 20 (O) · Round 133 to the nearest ten = 130 (H) · Round 33 to the nearest ten = 30 (U) · Round 92 to the nearest ten = 90 (E) · Round 166 to the nearest ten = 170 (S) · Round 220 to the nearest hundred = 200 (D) · Round 287 to the nearest hundred = 300 (P) · Round 1,074 to the nearest hundred = 1100 (A) · Round 234 to the nearest ten = 230 (L)
- Clue 4 (Addition): "FOUND A CUBE ANTENNA AT THE SCENE"2160 + 3138 = 5298 (F) · 2980 + 2744 = 5724 (O) · 3879 + 5488 = 9367 (E) · 1530 + 3252 = 4782 (A) · 1505 + 2596 = 4101 (N) · 1224 + 1020 = 2244 (C) · 1981 + 1304 = 3285 (S) · 783 + 1666 = 2449 (B) · 1339 + 1778 = 3117 (D) · 2078 + 4264 = 6342 (T) · 4368 + 5091 = 9459 (H) · 3391 + 4497 = 7888 (U)
- Clue 5 (Fractions of a number): surviving statement (box 11) → Chip Charlie3/5 of 5 = 3 · 2/8 of 4 = 1 · 2/4 of 20 = 10 · 4/5 of 10 = 8 · 2/3 of 3 = 2 · 1/3 of 36 = 12 · 2/4 of 14 = 7 · 1/4 of 16 = 4 · 1/8 of 40 = 5 · 3/5 of 15 = 9 · 3/6 of 12 = 6
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Place value, Fractions of a number, Rounding, Addition
- Reading level
- grades 3-4
- Theme
- The Glitch at Block Grid Citadel — set in Block Grid Citadel
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects