🔎 ExerciseGrade 2Reading: grades 5-6AdditionSubtractionSkip countingWord problemsMissing addends
The Mystery of the Gym Saboteur
Someone snuck into Apex Athletics during evening practice, turned off the treadmill power grids, and hid the championship trophy! Work through the gym clues to catch the culprit.
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 | Workout Specialty | Equipment Used | Grip Style | Headband Color | Energy Snack |
|---|---|---|---|---|---|
| Coco Gauff | Speed Jump Rope | Medicine Ball | Left Handed Grip | Bright Orange Headband | Peanut Butter Bar |
| Suni Lee | Speed Jump Rope | Barbell | Left Handed Grip | Cobalt Blue Headband | Trail Mix |
| Usain Bolt | Rowing Laps | Barbell | Right Handed Grip | Bright Orange Headband | Trail Mix |
| Katie Ledecky | Rowing Laps | Kettlebell | Right Handed Grip | Neon Green Headband | Banana Smoothie |
| Serena Williams | Speed Jump Rope | Medicine Ball | Left Handed Grip | Cobalt Blue Headband | Peanut Butter Bar |
| Sha'Carri Richardson | Spin Cycling | Battle Ropes | Left Handed Grip | Bright Orange Headband | Peanut Butter Bar |
| Tiger Woods | Spin Cycling | Resistance Band | Right Handed Grip | Neon Green Headband | Trail Mix |
| Mikaela Shiffrin | Calisthenics | Resistance Band | Right Handed Grip | Bright Orange Headband | Peanut Butter Bar |
| LeBron James | Rowing Laps | Battle Ropes | Left Handed Grip | Bright Orange Headband | Peanut Butter Bar |
| Simone Biles | Speed Jump Rope | Barbell | Left Handed Grip | Bright Orange Headband | Peanut Butter Bar |
| Stephen Curry | Spin Cycling | Battle Ropes | Left Handed Grip | Neon Green Headband | Banana Smoothie |
| Michael Phelps | Calisthenics | Battle Ropes | Left Handed Grip | Cobalt Blue Headband | Trail Mix |
| Chloe Kim | Spin Cycling | Medicine Ball | Right Handed Grip | Cobalt Blue Headband | Banana Smoothie |
| Sydney McLaughlin | Calisthenics | Battle Ropes | Left Handed Grip | Cobalt Blue Headband | Peanut Butter Bar |
| Cristiano Ronaldo | Calisthenics | Medicine Ball | Right Handed Grip | Bright Orange Headband | Peanut Butter Bar |
| Eliud Kipchoge | Calisthenics | Medicine Ball | Right Handed Grip | Bright Orange Headband | Trail Mix |
| Alex Morgan | Calisthenics | Kettlebell | Left Handed Grip | Bright Orange Headband | Trail Mix |
| Venus Williams | Rowing Laps | Kettlebell | Left Handed Grip | Bright Orange Headband | Peanut Butter Bar |
| Naomi Osaka | Powerlifting | Kettlebell | Left Handed Grip | Neon Green Headband | Peanut Butter Bar |
| Giannis Antetokounmpo | Calisthenics | Barbell | Left Handed Grip | Neon Green Headband | Banana Smoothie |
| Tom Brady | Powerlifting | Barbell | Right Handed Grip | Cobalt Blue Headband | Trail Mix |
Clue 1
Addition
You add up the weights on two rack stands to unlock the first digital locker 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
52
68
58
21
80
77
77
55
80
48
41
80
41
48
94
T
52
91
86
58
55
23
58
41
80
56
80
48
58
50
55
77
77
31 + 21 =T
32 + 24 =C
27 + 41 =H
48 + 32 =I
29 + 19 =N
11 + 10 =V
38 + 20 =E
26 + 15 =D
16 + 34 =B
64 + 27 =U
30 + 56 =S
6 + 17 =M
19 + 36 =A
40 + 37 =L
54 + 40 =O
0/15 letters found
Clue 2
Subtraction
Next, you subtract the missing foam rollers from the equipment total to find a hidden note.
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
85
58
88
48
58
75
42
45
71
75
30
45
80
16
T
85
58
88
35
74
71
52
52
88
42
42
59
75
22
42
88
33
T
85
58
75
16
35
88
35
86 - 1 =T
67 - 37 =R
78 - 26 =B
113 - 38 =A
55 - 33 =S
98 - 18 =O
67 - 34 =F
89 - 1 =E
85 - 11 =U
38 - 22 =N
88 - 30 =H
60 - 15 =K
72 - 13 =W
80 - 32 =C
58 - 16 =L
55 - 20 =D
95 - 24 =M
0/17 letters found
Clue 3
Skip counting
You skip count along the floor markers by fives to reach the hidden security vault.
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
39
21
90
30
12
80
T
39
12
120
T
39
60
36
36
90
100
22
16
90
22
8
26
T
39
33
26
T
39
T
39
90
35
33
22
35
22
T
39
T
39
21
90
120
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45T
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26A
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80O
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45R
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30U
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12N
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39B
Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50V
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20P
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110E
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100C
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27H
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140M
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, ___, 14, 16I
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120D
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42S
0/16 letters found
Clue 4
Word problems
Coach Miller gives you a quick word problem about gym gear to reveal another detail.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Astrandof hairturnedupatthescene.
B
28
16
7
22
21
36
18
16
A
N
22
E
21
E
A
D
B
28
A
N
D
Gym trainer lined up 4 rows of 7 jump ropes. How many jump ropes in all?B
Gym trainer found 7 water bottles yesterday and 14 more today. How many water bottles in all?H
Gym trainer lined up 11 rows of 2 sweat towels. How many sweat towels in all?G
Gym trainer lined up 2 rows of 8 dumbbells. How many dumbbells in all?R
Gym trainer lined up 6 rows of 3 gym mats. How many gym mats in all?O
Gym trainer found 5 sweat towels yesterday and 2 more today. How many sweat towels in all?I
Gym trainer lined up 4 rows of 9 sweat towels. How many sweat towels in all?T
0/7 letters found
Clue 5
Missing addends — the last clue
You complete the missing rep counts on a clipboard to unlock the final piece of evidence.
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
1 + ___ = 9
4 + ___ = 7
5 + ___ = 17
5 + ___ = 14
2 + ___ = 13
4 + ___ = 11
6 + ___ = 11
3 + ___ = 5
7 + ___ = 13
4 + ___ = 8
3 + ___ = 13
Step 2 — cross out the sentence with each answer
1.The villain pulled hard during rowing laps, then swung a heavy kettlebell.
2.The villain dashed through speed jump rope, then swung a heavy kettlebell.
3.The villain pulled hard during rowing laps, then whipped the long battle ropes.
4.The villain pedaled wildly during spin cycling, then swung a heavy kettlebell.
5.The villain dashed through speed jump rope, then whipped the long battle ropes.
6.The villain pedaled wildly during spin cycling, then hoisted a massive barbell.
7.The villain swung through calisthenics, then whipped the long battle ropes.
8.The villain dashed through speed jump rope, then hoisted a massive barbell.
9.The villain lifted heavy during powerlifting, then whipped the long battle ropes.
10.The villain lifted heavy during powerlifting, then stretched a resistance band.
11.The villain dashed through speed jump rope, then stretched a resistance band.
12.The villain pedaled wildly during spin cycling, then whipped the long battle ropes.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Gym Saboteur
Culprit: Venus Williams (Rowing Laps · Kettlebell · Left Handed Grip · Bright Orange Headband · Peanut Butter Bar)
- Clue 1 (Addition): "THE VILLAIN DID NOT USE A MEDICINE BALL"31 + 21 = 52 (T) · 32 + 24 = 56 (C) · 27 + 41 = 68 (H) · 48 + 32 = 80 (I) · 29 + 19 = 48 (N) · 11 + 10 = 21 (V) · 38 + 20 = 58 (E) · 26 + 15 = 41 (D) · 16 + 34 = 50 (B) · 64 + 27 = 91 (U) · 30 + 56 = 86 (S) · 6 + 17 = 23 (M) · 19 + 36 = 55 (A) · 40 + 37 = 77 (L) · 54 + 40 = 94 (O)
- Clue 2 (Subtraction): "THE CHALK MARK ON THE DUMBBELL WAS LEFT HANDED"86 - 1 = 85 (T) · 67 - 37 = 30 (R) · 78 - 26 = 52 (B) · 113 - 38 = 75 (A) · 55 - 33 = 22 (S) · 98 - 18 = 80 (O) · 67 - 34 = 33 (F) · 89 - 1 = 88 (E) · 85 - 11 = 74 (U) · 38 - 22 = 16 (N) · 88 - 30 = 58 (H) · 60 - 15 = 45 (K) · 72 - 13 = 59 (W) · 80 - 32 = 48 (C) · 58 - 16 = 42 (L) · 55 - 20 = 35 (D) · 95 - 24 = 71 (M)
- Clue 3 (Skip counting): "THE VICTIM TOSSED A PEANUT BUTTER BAR AT THEM"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (T) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (A) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80 = 60 (O) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (R) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (U) · Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (N) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (B) · Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50 = 30 (V) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (P) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (E) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100 = 80 (C) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (H) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (M) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, ___, 14, 16 = 12 (I) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (D) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (S)
- Clue 4 (Word problems): "BRIGHT ORANGE HEADBAND"Gym trainer lined up 4 rows of 7 jump ropes. How many jump ropes in all? = 28 (B) · Gym trainer found 7 water bottles yesterday and 14 more today. How many water bottles in all? = 21 (H) · Gym trainer lined up 11 rows of 2 sweat towels. How many sweat towels in all? = 22 (G) · Gym trainer lined up 2 rows of 8 dumbbells. How many dumbbells in all? = 16 (R) · Gym trainer lined up 6 rows of 3 gym mats. How many gym mats in all? = 18 (O) · Gym trainer found 5 sweat towels yesterday and 2 more today. How many sweat towels in all? = 7 (I) · Gym trainer lined up 4 rows of 9 sweat towels. How many sweat towels in all? = 36 (T)
- Clue 5 (Missing addends): surviving statement (box 1) → Venus Williams1 + ___ = 9 = 8 · 4 + ___ = 7 = 3 · 5 + ___ = 17 = 12 · 5 + ___ = 14 = 9 · 2 + ___ = 13 = 11 · 4 + ___ = 11 = 7 · 6 + ___ = 11 = 5 · 3 + ___ = 5 = 2 · 7 + ___ = 13 = 6 · 4 + ___ = 8 = 4 · 3 + ___ = 13 = 10
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Addition, Subtraction, Skip counting, Word problems, Missing addends
- Reading level
- grades 5-6
- Theme
- The Mystery of the Gym Saboteur — set in Apex Athletics Training Center
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects