🏎️ CarsGrade 6Reading: grades 5-6Fractions of a numberPercentagesExponentsOrder of operations
The Midnight Grand Prix Sabotage
Someone tampered with the championship trophy at Apex Speedway just hours before the final race!
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 | Engine Spec | Body Mod | Steering Style | Driver Hairstyle | Track Hazard |
|---|---|---|---|---|---|
| Ayrton Swift | Nitro Boost | Neon Underglow | Right-handed Driver | Curly Afro | Banana Peels |
| Dale Driftwood | Turbo Charger | Rear Spoiler | Left-handed Driver | Long Ponytail | Oil Slicks |
| Carlos Apex | Turbo Charger | Flame Exhaust | Right-handed Driver | Curly Afro | Banana Peels |
| Lando Lane | Electric Drive | Neon Underglow | Right-handed Driver | Curly Afro | Puddle Traps |
| Seb Slick | Supercharger | Wheel Spikes | Right-handed Driver | Curly Afro | Banana Peels |
| Charles Circuit | Twin Engine | Rear Spoiler | Left-handed Driver | Buzz Cut | Puddle Traps |
| Valtteri Velocity | Nitro Boost | Carbon Fiber Hood | Right-handed Driver | Curly Afro | Puddle Traps |
| Nico Nitro | Nitro Boost | Carbon Fiber Hood | Left-handed Driver | Curly Afro | Puddle Traps |
| Lewis Lapper | Twin Engine | Flame Exhaust | Right-handed Driver | Curly Afro | Puddle Traps |
| Pierre Pit | Supercharger | Flame Exhaust | Left-handed Driver | Long Ponytail | Banana Peels |
| Sergio Shift | Twin Engine | Wheel Spikes | Right-handed Driver | Long Ponytail | Puddle Traps |
| Lance Lap | Turbo Charger | Carbon Fiber Hood | Left-handed Driver | Buzz Cut | Banana Peels |
| Zhou Zip | Electric Drive | Flame Exhaust | Right-handed Driver | Long Ponytail | Banana Peels |
| Kevin Kart | Nitro Boost | Rear Spoiler | Left-handed Driver | Buzz Cut | Puddle Traps |
| Alexander Axle | Supercharger | Carbon Fiber Hood | Right-handed Driver | Long Ponytail | Banana Peels |
| Yuki Yard | Nitro Boost | Wheel Spikes | Left-handed Driver | Curly Afro | Oil Slicks |
| Fernando Fast | Twin Engine | Neon Underglow | Left-handed Driver | Long Ponytail | Oil Slicks |
| Mario Speedwagon | Nitro Boost | Neon Underglow | Right-handed Driver | Curly Afro | Puddle Traps |
| Esteban Engine | Supercharger | Flame Exhaust | Right-handed Driver | Buzz Cut | Puddle Traps |
| Danica Dash | Twin Engine | Rear Spoiler | Right-handed Driver | Curly Afro | Puddle Traps |
| Max Vroom | Nitro Boost | Rear Spoiler | Right-handed Driver | Long Ponytail | Oil Slicks |
Clue 1
Fractions of a number
The pit crew calculated what fraction of the spare tires were still intact after the night shift.
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
14
37
15
23
16
3
3
39
16
27
17
11
15
7
27
11
T
14
37
39
23
15
39
6
15
39
6
7
29
11
16
3
15
6
7/10 of 20 =T
2/6 of 87 =P
2/6 of 111 =H
3/6 of 14 =S
1/2 of 22 =O
3/8 of 72 =N
3/4 of 4 =L
3/4 of 8 =R
1/6 of 138 =V
4/8 of 34 =D
6/8 of 20 =E
2/10 of 195 =A
2/6 of 48 =I
0/13 letters found
Clue 2
Percentages
A sensor report showed the percentage of fuel remaining in the speedway storage tanks.
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
36
15
19
27
43
T
36
11
19
9
9
9
45
27
45
32
43
25
15
T
36
15
45
11
12
19
12
12
32
43
26
19
32
60% of 60 =T
5% of 500 =G
40% of 80 =R
25% of 180 =A
50% of 24 =D
5% of 860 =I
60% of 45 =W
60% of 25 =H
75% of 12 =S
20% of 130 =V
5% of 220 =N
50% of 38 =E
0/12 letters found
Clue 3
Exponents
The telemetric computer analyzed lap speeds using powers of gear ratios.
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
100
225
121
256
169
243
125
169
81
81
T
100
25
216
216
121
32
36
128
216
64
32
32
361
121
T
100
243
169
216
81
10^2 =T
5^3 =W
3^5 =R
19^2 =L
6^2 =B
11^2 =E
4^3 =U
9^2 =S
6^3 =P
2^5 =D
2^7 =Y
13^2 =A
16^2 =C
15^2 =H
5^2 =O
0/15 letters found
Clue 4
Order of operations
The Chief Mechanic evaluated a multi step formula to calculate total track penalty points.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
E
10
67
19
45
E
10
36
28
E
10
50
8
12
62
50
77
45
41
19
67
E
10
41
62
19
71
8
77
28
75
41
76
29
77
72
41
12
4 + 2 × 3 =E
12 × 5 - 15 =D
8 + 2 × 2 =O
34 + 4 × 7 =W
48 + 3 × 8 =F
5 × 8 - 21 =I
9 × 11 - 28 =T
8 × 6 - 7 =R
9 × 5 - 9 =N
9 × 5 - 16 =Y
51 + 2 × 8 =V
62 + 5 × 3 =A
10 + 8 × 5 =S
7 × 4 - 20 =H
3 × 11 - 5 =C
10 × 8 - 4 =L
12 × 8 - 21 =U
0/17 letters found
Clue 5
Fractions of a number — the last clue
The security team checked what fraction of total track cameras captured a clear image.
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
3/10 of 40 = ?
1/4 of 12 = ?
1/8 of 56 = ?
2/4 of 4 = ?
1/10 of 40 = ?
3/5 of 10 = ?
1/4 of 4 = ?
2/6 of 30 = ?
8/10 of 10 = ?
3/6 of 10 = ?
1/2 of 22 = ?
Step 2 — cross out the sentence with each answer
1.The villain switched on turbo charger, then deployed wheel spikes.
2.The villain switched on turbo charger, then flexed the carbon fiber hood.
3.The villain activated nitro boost, then lit up neon underglow.
4.The villain revved the supercharger, then flexed the carbon fiber hood.
5.The villain fired up twin engine, then flexed the carbon fiber hood.
6.The villain fired up twin engine, then lit up neon underglow.
7.The villain activated nitro boost, then flexed the carbon fiber hood.
8.The villain activated nitro boost, then blasted flame exhaust.
9.The villain engaged electric drive, then lit up neon underglow.
10.The villain fired up twin engine, then adjusted the rear spoiler.
11.The villain engaged electric drive, then deployed wheel spikes.
12.The villain fired up twin engine, then blasted flame exhaust.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Midnight Grand Prix Sabotage
Culprit: Lando Lane (Electric Drive · Neon Underglow · Right-handed Driver · Curly Afro · Puddle Traps)
- Clue 1 (Fractions of a number): "THE VILLAIN DOES NOT HAVE A REAR SPOILER"7/10 of 20 = 14 (T) · 2/6 of 87 = 29 (P) · 2/6 of 111 = 37 (H) · 3/6 of 14 = 7 (S) · 1/2 of 22 = 11 (O) · 3/8 of 72 = 27 (N) · 3/4 of 4 = 3 (L) · 3/4 of 8 = 6 (R) · 1/6 of 138 = 23 (V) · 4/8 of 34 = 17 (D) · 6/8 of 20 = 15 (E) · 2/10 of 195 = 39 (A) · 2/6 of 48 = 16 (I)
- Clue 2 (Percentages): "THE WITNESS SAW A RIGHT HANDED DRIVER"60% of 60 = 36 (T) · 5% of 500 = 25 (G) · 40% of 80 = 32 (R) · 25% of 180 = 45 (A) · 50% of 24 = 12 (D) · 5% of 860 = 43 (I) · 60% of 45 = 27 (W) · 60% of 25 = 15 (H) · 75% of 12 = 9 (S) · 20% of 130 = 26 (V) · 5% of 220 = 11 (N) · 50% of 38 = 19 (E)
- Clue 3 (Exponents): "THE CAR WAS STOPPED BY PUDDLE TRAPS"10^2 = 100 (T) · 5^3 = 125 (W) · 3^5 = 243 (R) · 19^2 = 361 (L) · 6^2 = 36 (B) · 11^2 = 121 (E) · 4^3 = 64 (U) · 9^2 = 81 (S) · 6^3 = 216 (P) · 2^5 = 32 (D) · 2^7 = 128 (Y) · 13^2 = 169 (A) · 16^2 = 256 (C) · 15^2 = 225 (H) · 5^2 = 25 (O)
- Clue 4 (Order of operations): "EVIDENCE SHOWS A DRIVER WITH A CURLY AFRO"4 + 2 × 3 = 10 (E) · 12 × 5 - 15 = 45 (D) · 8 + 2 × 2 = 12 (O) · 34 + 4 × 7 = 62 (W) · 48 + 3 × 8 = 72 (F) · 5 × 8 - 21 = 19 (I) · 9 × 11 - 28 = 71 (T) · 8 × 6 - 7 = 41 (R) · 9 × 5 - 9 = 36 (N) · 9 × 5 - 16 = 29 (Y) · 51 + 2 × 8 = 67 (V) · 62 + 5 × 3 = 77 (A) · 10 + 8 × 5 = 50 (S) · 7 × 4 - 20 = 8 (H) · 3 × 11 - 5 = 28 (C) · 10 × 8 - 4 = 76 (L) · 12 × 8 - 21 = 75 (U)
- Clue 5 (Fractions of a number): surviving statement (box 9) → Lando Lane3/10 of 40 = 12 · 1/4 of 12 = 3 · 1/8 of 56 = 7 · 2/4 of 4 = 2 · 1/10 of 40 = 4 · 3/5 of 10 = 6 · 1/4 of 4 = 1 · 2/6 of 30 = 10 · 8/10 of 10 = 8 · 3/6 of 10 = 5 · 1/2 of 22 = 11
About this mystery
- Grade level
- Grade 6 math
- Math topics
- Fractions of a number, Percentages, Exponents, Order of operations
- Reading level
- grades 5-6
- Theme
- The Midnight Grand Prix Sabotage — set in Apex Speedway
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects