🔎 Gymnastics and gymGrade 1Reading: grades 1-2AdditionSubtractionSkip countingPlace valueMissing addends
The Case of the Missing Golden Chalk
Someone took the Head Coach's lucky Golden Chalk right before the big championship meet! We must use our math skills to track down the Vault Thief.
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 | Best Event | Warmup Gear | Chalk Bag Hand | Hair Ribbon | Distraction |
|---|---|---|---|---|---|
| Konnor | Balance Beam | Neon Ankle Tape | Left Handed | Red Ribbon | Loud Music |
| Frederick | Uneven Bars | Sparkly Scrunchie | Right Handed | Blue Ribbon | Sticky Mats |
| Grace | Balance Beam | Striped Chalk Bag | Right Handed | Blue Ribbon | Sticky Mats |
| Leanne | Uneven Bars | Sparkly Scrunchie | Left Handed | Green Ribbon | Loud Music |
| Skye | Trampoline | Striped Chalk Bag | Left Handed | Blue Ribbon | Squeaky Shoes |
| Shannon | Balance Beam | Blue Wrist Wraps | Right Handed | Green Ribbon | Loud Music |
| Aly | Balance Beam | Neon Ankle Tape | Right Handed | Blue Ribbon | Squeaky Shoes |
| Shilese | Balance Beam | Sparkly Scrunchie | Left Handed | Blue Ribbon | Squeaky Shoes |
| Jordan | Vaulting Horse | Pink Grip Gloves | Right Handed | Blue Ribbon | Squeaky Shoes |
| Nastia | Vaulting Horse | Neon Ankle Tape | Left Handed | Blue Ribbon | Loud Music |
| Chellsie | Trampoline | Neon Ankle Tape | Left Handed | Blue Ribbon | Squeaky Shoes |
| Katelyn | Vaulting Horse | Blue Wrist Wraps | Left Handed | Blue Ribbon | Squeaky Shoes |
| Sunisa | Floor Routine | Neon Ankle Tape | Left Handed | Blue Ribbon | Loud Music |
| Dominique | Floor Routine | Striped Chalk Bag | Left Handed | Blue Ribbon | Squeaky Shoes |
| Brody | Trampoline | Neon Ankle Tape | Left Handed | Blue Ribbon | Loud Music |
| Laurie | Balance Beam | Sparkly Scrunchie | Right Handed | Blue Ribbon | Loud Music |
| Jade | Floor Routine | Blue Wrist Wraps | Right Handed | Blue Ribbon | Squeaky Shoes |
| Carly | Trampoline | Blue Wrist Wraps | Left Handed | Blue Ribbon | Loud Music |
| Shawn | Vaulting Horse | Neon Ankle Tape | Left Handed | Green Ribbon | Loud Music |
| Joscelyn | Floor Routine | Neon Ankle Tape | Right Handed | Green Ribbon | Loud Music |
| Trinity | Vaulting Horse | Pink Grip Gloves | Left Handed | Red Ribbon | Squeaky Shoes |
Clue 1
Addition
We find the score sheets. Let us add the beam scores together to find 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
15
17
4
T
15
17
5
4
10
3
19
4
9
8
19
T
15
2
4
7
12
7
9
20
7
12
11
18
16
9
6
12
13
8
6
17
5
4
4 + 11 =T
9 + 11 =P
3 + 8 =K
2 + 7 =S
5 + 2 =A
9 + 3 =R
1 + 3 =E
1 + 2 =D
6 + 4 =F
4 + 2 =C
11 + 7 =L
4 + 4 =N
7 + 9 =Y
3 + 2 =I
3 + 10 =U
1 + 1 =W
11 + 6 =H
6 + 13 =O
0/18 letters found
Clue 2
Subtraction
Some practice cones are missing. Subtract the lost cones to see what is left behind.
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
9
17
4
T
9
17
14
4
13
10
19
4
19
18
12
4
13
T
9
17
18
15
16
6
17
18
12
8
7
18
1
10 - 1 =T
19 - 2 =H
8 - 7 =G
12 - 8 =E
14 - 8 =C
20 - 4 =D
19 - 5 =I
14 - 6 =K
20 - 8 =L
16 - 6 =U
20 - 5 =N
20 - 1 =S
19 - 1 =A
15 - 2 =F
10 - 3 =B
0/15 letters found
Clue 3
Skip counting
We count the gym mats in groups of five. This pattern leads us to a 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
30
33
9
T
30
33
130
9
35
33
22
T
30
9
120
120
90
70
9
22
110
55
120
33
42
9
120
Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65Y
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150I
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39H
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15E
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48O
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110Q
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140S
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130K
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, 60, ___, 80, 90U
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45F
0/12 letters found
Clue 4
Place value
Look at the locker numbers. They have tens and ones. One special number reveals a secret.
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
76
54
90
T
76
54
81
90
82
13
60
93
56
56
90
13
91
94
41
45
90
54
91
81
60
60
81
94
94
93
28
What number has 7 tens and 6 ones?T
What number has 5 tens and 4 ones?H
What number has 4 tens and 1 one?L
What number has 9 tens and 0 ones?E
What number has 8 tens and 2 ones?F
What number has 9 tens and 3 ones?O
What number has 8 tens and 1 one?I
What number has 9 tens and 4 ones?B
What number has 2 tens and 8 ones?N
What number has 4 tens and 5 ones?U
What number has 6 tens and 0 ones?R
What number has 5 tens and 6 ones?P
What number has 1 ten and 3 ones?D
What number has 9 tens and 1 one?A
0/14 letters found
Clue 5
Missing addends — the last clue
We need ten ribbon rolls. We only have six. Find the missing number to get 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
6 + ___ = 12
2 + ___ = 14
7 + ___ = 15
2 + ___ = 3
1 + ___ = 12
3 + ___ = 12
10 + ___ = 17
2 + ___ = 5
6 + ___ = 16
9 + ___ = 13
4 + ___ = 6
Step 2 — cross out the sentence with each answer
1.The villain vaults over the wooden horse, then tightens their pink grip gloves.
2.The villain vaults over the wooden horse, then taps their neon ankle tape.
3.The villain bounces off the giant trampoline, then wraps their blue wrist wraps.
4.The villain leaps off the balance beam, then tightens their pink grip gloves.
5.The villain bounces off the giant trampoline, then unzips their striped chalk bag.
6.The villain flips across the spring floor, then unzips their striped chalk bag.
7.The villain flips across the spring floor, then taps their neon ankle tape.
8.The villain bounces off the giant trampoline, then taps their neon ankle tape.
9.The villain leaps off the balance beam, then taps their neon ankle tape.
10.The villain flips across the spring floor, then tightens their pink grip gloves.
11.The villain vaults over the wooden horse, then adjusts their sparkly scrunchie.
12.The villain vaults over the wooden horse, then wraps their blue wrist wraps.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Golden Chalk
Culprit: Skye (Trampoline · Striped Chalk Bag · Left Handed · Blue Ribbon · Squeaky Shoes)
- Clue 1 (Addition): "THE THIEF DOES NOT WEAR A SPARKLY SCRUNCHIE"4 + 11 = 15 (T) · 9 + 11 = 20 (P) · 3 + 8 = 11 (K) · 2 + 7 = 9 (S) · 5 + 2 = 7 (A) · 9 + 3 = 12 (R) · 1 + 3 = 4 (E) · 1 + 2 = 3 (D) · 6 + 4 = 10 (F) · 4 + 2 = 6 (C) · 11 + 7 = 18 (L) · 4 + 4 = 8 (N) · 7 + 9 = 16 (Y) · 3 + 2 = 5 (I) · 3 + 10 = 13 (U) · 1 + 1 = 2 (W) · 11 + 6 = 17 (H) · 6 + 13 = 19 (O)
- Clue 2 (Subtraction): "THE THIEF USES A LEFT HAND CHALK BAG"10 - 1 = 9 (T) · 19 - 2 = 17 (H) · 8 - 7 = 1 (G) · 12 - 8 = 4 (E) · 14 - 8 = 6 (C) · 20 - 4 = 16 (D) · 19 - 5 = 14 (I) · 14 - 6 = 8 (K) · 20 - 8 = 12 (L) · 16 - 6 = 10 (U) · 20 - 5 = 15 (N) · 20 - 1 = 19 (S) · 19 - 1 = 18 (A) · 15 - 2 = 13 (F) · 10 - 3 = 7 (B)
- Clue 3 (Skip counting): "THE THIEF HATES SQUEAKY SHOES"Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50 = 30 (T) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (Y) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (I) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (H) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (E) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (O) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (Q) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (S) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (K) · 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, 60, ___, 80, 90 = 70 (U) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (F)
- Clue 4 (Place value): "THE THIEF DROPPED A BLUE HAIR RIBBON"What number has 7 tens and 6 ones? = 76 (T) · What number has 5 tens and 4 ones? = 54 (H) · What number has 4 tens and 1 one? = 41 (L) · What number has 9 tens and 0 ones? = 90 (E) · What number has 8 tens and 2 ones? = 82 (F) · What number has 9 tens and 3 ones? = 93 (O) · What number has 8 tens and 1 one? = 81 (I) · What number has 9 tens and 4 ones? = 94 (B) · What number has 2 tens and 8 ones? = 28 (N) · What number has 4 tens and 5 ones? = 45 (U) · What number has 6 tens and 0 ones? = 60 (R) · What number has 5 tens and 6 ones? = 56 (P) · What number has 1 ten and 3 ones? = 13 (D) · What number has 9 tens and 1 one? = 91 (A)
- Clue 5 (Missing addends): surviving statement (box 5) → Skye6 + ___ = 12 = 6 · 2 + ___ = 14 = 12 · 7 + ___ = 15 = 8 · 2 + ___ = 3 = 1 · 1 + ___ = 12 = 11 · 3 + ___ = 12 = 9 · 10 + ___ = 17 = 7 · 2 + ___ = 5 = 3 · 6 + ___ = 16 = 10 · 9 + ___ = 13 = 4 · 4 + ___ = 6 = 2
About this mystery
- Grade level
- Grade 1 math
- Math topics
- Addition, Subtraction, Skip counting, Place value, Missing addends
- Reading level
- grades 1-2
- Theme
- The Case of the Missing Golden Chalk — set in The Fliptastic Gymnastics Arena
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects