🤖 RobotsGrade 2Reading: grades 1-2Place valueAdditionSubtractionSkip countingMissing addends
The Mystery of the Glitch Bot
Someone scrambled the robot factory control board! Help Chief Mechanic Rita figure out which robot caused the chaos.
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 | Main Tool | Gadget | Handedness | Antenna | Weakness |
|---|---|---|---|---|---|
| Rover | Power Drill | Rocket Boots | LEFT GRIP | SQUARE DISH | WATER SPRAY |
| Volt | Welding Torch | Rocket Boots | LEFT GRIP | SQUARE DISH | WATER SPRAY |
| Clinker | Freeze Ray | Turbo Boost | LEFT GRIP | SPIKY WIRE | MAGNETIC WAND |
| Sparky | Laser Beam | Grappling Hook | LEFT GRIP | SPIKY WIRE | MAGNETIC WAND |
| Gearbox | Freeze Ray | Plasma Shield | RIGHT GRIP | SPIKY WIRE | LOUD BEEP |
| Sprocket | Power Drill | Oil Can | LEFT GRIP | SQUARE DISH | LOUD BEEP |
| Tinker | Sonic Blaster | Grappling Hook | LEFT GRIP | SQUARE DISH | WATER SPRAY |
| Echo | Power Drill | Oil Can | LEFT GRIP | LOOP ANTENNA | WATER SPRAY |
| Widget | Freeze Ray | Turbo Boost | RIGHT GRIP | SPIKY WIRE | MAGNETIC WAND |
| Beep | Welding Torch | Plasma Shield | LEFT GRIP | SQUARE DISH | LOUD BEEP |
| RustE | Sonic Blaster | Plasma Shield | LEFT GRIP | SPIKY WIRE | WATER SPRAY |
| Circuit | Laser Beam | Grappling Hook | LEFT GRIP | SQUARE DISH | MAGNETIC WAND |
| Gizmo | Sonic Blaster | Oil Can | LEFT GRIP | SPIKY WIRE | WATER SPRAY |
| Data | Freeze Ray | Oil Can | LEFT GRIP | SQUARE DISH | WATER SPRAY |
| Radar | Freeze Ray | Rocket Boots | LEFT GRIP | LOOP ANTENNA | LOUD BEEP |
| Bolt | Laser Beam | Turbo Boost | LEFT GRIP | LOOP ANTENNA | WATER SPRAY |
| Zero | Sonic Blaster | Grappling Hook | LEFT GRIP | SPIKY WIRE | MAGNETIC WAND |
| Nano | Sonic Blaster | Plasma Shield | RIGHT GRIP | LOOP ANTENNA | LOUD BEEP |
| Pixel | Sonic Blaster | Grappling Hook | RIGHT GRIP | SQUARE DISH | WATER SPRAY |
| Byte | Laser Beam | Grappling Hook | LEFT GRIP | SQUARE DISH | WATER SPRAY |
| Vector | Laser Beam | Rocket Boots | LEFT GRIP | SPIKY WIRE | WATER SPRAY |
Clue 1
Place value
Check the digital screen on the workshop wall. Look at the tens and ones place to read 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
41
23
73
85
44
73
63
75
65
25
13
T
41
92
13
73
85
44
13
T
41
20
85
73
63
44
13
15
96
42
63
44
What number has 4 tens and 1 one?T
What number has 4 tens and 4 ones?N
What number has 9 tens and 6 ones?L
What number has 1 ten and 3 ones?O
What number has 2 tens and 0 ones?U
What number has 8 tens and 5 ones?S
What number has 7 tens and 5 ones?K
What number has 2 tens and 5 ones?B
What number has 9 tens and 2 ones?D
What number has 2 tens and 3 ones?H
What number has 7 tens and 3 ones?E
What number has 1 ten and 5 ones?I
What number has 6 tens and 5 ones?Y
What number has 4 tens and 2 ones?C
What number has 6 tens and 3 ones?A
0/15 letters found
Clue 2
Addition
Count the spare gears in both boxes and add them together to find the key number.
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
45
64
91
75
37
T
45
40
91
88
88
88
46
75
46
67
22
T
45
75
37
T
45
64
46
32
91
63
T
45
44
24
37
89
27 + 18 =T
35 + 53 =S
13 + 27 =N
36 + 28 =H
21 + 16 =I
27 + 19 =A
23 + 9 =L
15 + 7 =O
26 + 41 =B
20 + 24 =G
53 + 22 =W
54 + 35 =P
15 + 9 =R
35 + 28 =F
39 + 52 =E
0/15 letters found
Clue 3
Subtraction
Take away the broken batteries from the pile to see how many good ones remain.
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
62
23
49
72
56
T
62
36
29
30
30
T
62
56
24
24
49
78
72
73
29
36
29
T
62
49
31
30
24
31
29
73
72 - 10 =T
38 - 2 =W
43 - 13 =S
59 - 3 =O
93 - 15 =D
69 - 38 =R
83 - 10 =Y
74 - 2 =B
29 - 5 =P
68 - 39 =A
62 - 13 =E
51 - 28 =H
0/12 letters found
Clue 4
Skip counting
Count the shiny robot bolts on the tray by twos to crack the mystery lock.
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
30
22
70
24
15
22
18
65
S
30
S
30
18
9
140
24
S
30
120
10
24
70
65
12
25
S
30
18
140
24
S
30
18
65
70
65
Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50S
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30A
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26C
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140Q
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80R
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160W
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15O
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75E
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14U
Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25T
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, ___, 20, 22H
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, ___, 14, 16D
0/13 letters found
Clue 5
Missing addends — the last clue
Find how many missing microchips are needed to reach a total of ten.
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 + ___ = 13
7 + ___ = 9
10 + ___ = 19
1 + ___ = 11
10 + ___ = 17
6 + ___ = 17
10 + ___ = 22
9 + ___ = 12
6 + ___ = 12
9 + ___ = 10
1 + ___ = 6
Step 2 — cross out the sentence with each answer
1.The villain drilled into the safe, then blocked the hallway with a plasma shield.
2.The villain drilled into the safe, then zoomed away on rocket boots.
3.The villain zapped the main power box, then zoomed away on rocket boots.
4.The villain sparks the control panel, then zoomed away on rocket boots.
5.The villain sparks the control panel, then blocked the hallway with a plasma shield.
6.The villain zapped the main power box, then sped off using turbo boost.
7.The villain froze the conveyor belt, then escaped up the wall with a grappling hook.
8.The villain zapped the main power box, then escaped up the wall with a grappling hook.
9.The villain blasted the warehouse doors, then escaped up the wall with a grappling hook.
10.The villain drilled into the safe, then squirted slippery oil on the floor.
11.The villain blasted the warehouse doors, then sped off using turbo boost.
12.The villain zapped the main power box, then squirted slippery oil on the floor.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Glitch Bot
Culprit: Byte (Laser Beam · Grappling Hook · LEFT GRIP · SQUARE DISH · WATER SPRAY)
- Clue 1 (Place value): "THE SNEAKY BOT DOES NOT USE AN OIL CAN"What number has 4 tens and 1 one? = 41 (T) · What number has 4 tens and 4 ones? = 44 (N) · What number has 9 tens and 6 ones? = 96 (L) · What number has 1 ten and 3 ones? = 13 (O) · What number has 2 tens and 0 ones? = 20 (U) · What number has 8 tens and 5 ones? = 85 (S) · What number has 7 tens and 5 ones? = 75 (K) · What number has 2 tens and 5 ones? = 25 (B) · What number has 9 tens and 2 ones? = 92 (D) · What number has 2 tens and 3 ones? = 23 (H) · What number has 7 tens and 3 ones? = 73 (E) · What number has 1 ten and 5 ones? = 15 (I) · What number has 6 tens and 5 ones? = 65 (Y) · What number has 4 tens and 2 ones? = 42 (C) · What number has 6 tens and 3 ones? = 63 (A)
- Clue 2 (Addition): "THE WITNESS SAW A BOT WITH A LEFT GRIP"27 + 18 = 45 (T) · 35 + 53 = 88 (S) · 13 + 27 = 40 (N) · 36 + 28 = 64 (H) · 21 + 16 = 37 (I) · 27 + 19 = 46 (A) · 23 + 9 = 32 (L) · 15 + 7 = 22 (O) · 26 + 41 = 67 (B) · 20 + 24 = 44 (G) · 53 + 22 = 75 (W) · 54 + 35 = 89 (P) · 15 + 9 = 24 (R) · 35 + 28 = 63 (F) · 39 + 52 = 91 (E)
- Clue 3 (Subtraction): "THE BOT WAS STOPPED BY A WATER SPRAY"72 - 10 = 62 (T) · 38 - 2 = 36 (W) · 43 - 13 = 30 (S) · 59 - 3 = 56 (O) · 93 - 15 = 78 (D) · 69 - 38 = 31 (R) · 83 - 10 = 73 (Y) · 74 - 2 = 72 (B) · 29 - 5 = 24 (P) · 68 - 39 = 29 (A) · 62 - 13 = 49 (E) · 51 - 28 = 23 (H)
- Clue 4 (Skip counting): "SCRATCHES SHOW A SQUARE DISH WAS HERE"Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50 = 30 (S) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30 = 24 (A) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (C) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (Q) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (R) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160 = 140 (W) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (O) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (E) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (U) · Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25 = 15 (T) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, ___, 20, 22 = 18 (H) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, ___, 14, 16 = 12 (D)
- Clue 5 (Missing addends): surviving statement (box 8) → Byte9 + ___ = 13 = 4 · 7 + ___ = 9 = 2 · 10 + ___ = 19 = 9 · 1 + ___ = 11 = 10 · 10 + ___ = 17 = 7 · 6 + ___ = 17 = 11 · 10 + ___ = 22 = 12 · 9 + ___ = 12 = 3 · 6 + ___ = 12 = 6 · 9 + ___ = 10 = 1 · 1 + ___ = 6 = 5
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Place value, Addition, Subtraction, Skip counting, Missing addends
- Reading level
- grades 1-2
- Theme
- The Mystery of the Glitch Bot — set in Gearsburg Bot Factory
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects