🐱 CatsGrade 1Reading: grades 3-4AdditionSubtractionSkip countingPlace valueMissing addends
The Case of the Missing Golden Catnip
Someone snuck into Whisker Haven Bakery and snatched the world famous Golden Catnip treat! Chef Purrcival needs your help to examine the evidence and 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 | Special Skill | Favorite Toy | Paw Habit | Fur Style | Distracted By |
|---|---|---|---|---|---|
| Hazel | Night Sight | Feather Wand | Left Pawed | Striped Tabby Fur | Warm Sunbeams |
| Peanut | High Jump | Squeaky Toy | Left Pawed | Striped Tabby Fur | Warm Sunbeams |
| Smokey | Fast Sprint | Laser Pointer | Left Pawed | Sleek Black Fur | Warm Sunbeams |
| Milo | Super Pounce | Squeaky Toy | Right Pawed | Sleek Black Fur | Crinkly Bags |
| Barnaby | Fast Sprint | Feather Wand | Right Pawed | Fluffy White Fur | Crinkly Bags |
| Shadow | Super Pounce | Squeaky Toy | Left Pawed | Fluffy White Fur | Crinkly Bags |
| Oliver | Night Sight | Catnip Mouse | Right Pawed | Striped Tabby Fur | Warm Sunbeams |
| Felix | Super Pounce | Feather Wand | Left Pawed | Striped Tabby Fur | Crinkly Bags |
| Leo | Super Pounce | Squeaky Toy | Left Pawed | Striped Tabby Fur | Warm Sunbeams |
| Penelope | High Jump | Catnip Mouse | Left Pawed | Striped Tabby Fur | Warm Sunbeams |
| Simba | Night Sight | Yarn Ball | Right Pawed | Sleek Black Fur | Crinkly Bags |
| Ziggy | High Jump | Squeaky Toy | Left Pawed | Sleek Black Fur | Warm Sunbeams |
| Bella | High Jump | Laser Pointer | Right Pawed | Striped Tabby Fur | Tuna Treats |
| Jasper | Night Sight | Laser Pointer | Right Pawed | Fluffy White Fur | Crinkly Bags |
| Max | High Jump | Yarn Ball | Left Pawed | Fluffy White Fur | Crinkly Bags |
| Luna | Night Sight | Squeaky Toy | Right Pawed | Fluffy White Fur | Tuna Treats |
| Charlie | Silent Tread | Laser Pointer | Left Pawed | Striped Tabby Fur | Warm Sunbeams |
| Mia | High Jump | Squeaky Toy | Left Pawed | Fluffy White Fur | Warm Sunbeams |
| Willow | Fast Sprint | Squeaky Toy | Left Pawed | Sleek Black Fur | Crinkly Bags |
| Oreo | Night Sight | Yarn Ball | Right Pawed | Striped Tabby Fur | Crinkly Bags |
| Toby | Fast Sprint | Catnip Mouse | Left Pawed | Striped Tabby Fur | Tuna Treats |
Clue 1
Addition
Chef Purrcival counted up all the spilled baking treats to gather your very first lead.
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
7
17
12
4
16
2
20
11
14
2
10
5
10
15
19
T
7
8
14
2
2
13
14
11
14
9
12
2
6
19
5
15
T
7
12
2
5 + 2 =T
4 + 4 =C
14 + 6 =G
5 + 14 =O
1 + 1 =R
5 + 8 =Y
6 + 3 =S
12 + 4 =U
2 + 3 =I
11 + 6 =H
8 + 4 =E
5 + 9 =A
11 + 4 =N
4 + 7 =L
3 + 1 =B
4 + 6 =D
4 + 2 =P
0/17 letters found
Clue 2
Subtraction
You checked how many milk bowls were left after the commotion to rule out another 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
3
12
2
9
8
1
11
18
6
1
8
4
2
15
T
3
12
2
7
1
18
2
16
T
3
10
6
13
5
14
T
3
12
2
18
6
T
3
17
12
5 - 2 =T
6 - 1 =O
20 - 8 =H
13 - 4 =B
10 - 6 =S
13 - 7 =A
19 - 1 =L
12 - 4 =U
12 - 1 =G
20 - 5 =D
20 - 4 =F
15 - 5 =P
6 - 5 =R
13 - 6 =I
18 - 1 =C
6 - 4 =E
14 - 1 =W
18 - 4 =N
0/18 letters found
Clue 3
Skip counting
The detective counted paw prints in groups of two along the bakery hallway.
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
26
65
140
10
110
39
55
21
110
30
21
60
60
55
16
30
65
130
130
16
30
28
140
36
30
21
110
6
60
10
28
140
65
21
6
60
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75E
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, ___, 33, 36W
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160B
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150D
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10M
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65L
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27A
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30H
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ___, 65, 70S
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45G
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14U
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32N
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20O
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42Y
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130R
0/16 letters found
Clue 4
Place value
Analyzing the mystery code on the recipe vault reveals a key detail about the culprit.
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
54
53
30
64
76
88
50
53
42
12
12
96
56
60
30
72
42
S
54
56
87
60
45
50
45
88
42
30
53
38
88
S
54
42
56
88
What number has 5 tens and 4 ones?S
What number has 9 tens and 6 ones?Y
What number has 5 tens and 0 ones?D
What number has 4 tens and 2 ones?A
What number has 6 tens and 4 ones?I
What number has 8 tens and 7 ones?O
What number has 7 tens and 2 ones?W
What number has 6 tens and 0 ones?U
What number has 4 tens and 5 ones?N
What number has 3 tens and 0 ones?R
What number has 8 tens and 8 ones?E
What number has 1 ten and 2 ones?B
What number has 3 tens and 8 ones?H
What number has 5 tens and 3 ones?T
What number has 5 tens and 6 ones?F
What number has 7 tens and 6 ones?P
0/16 letters found
Clue 5
Missing addends — the last clue
Work out how many missing cat biscuits complete the clue to make your final discovery.
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
6 + ___ = 15
6 + ___ = 17
1 + ___ = 4
2 + ___ = 14
4 + ___ = 8
10 + ___ = 20
5 + ___ = 10
7 + ___ = 8
2 + ___ = 4
7 + ___ = 13
Step 2 — cross out the sentence with each answer
1.The villain sprinted past the pantry, then grabbed the feather wand.
2.The villain leaped over the counter, then snatched the catnip mouse.
3.The villain crawled under the table, then snatched the catnip mouse.
4.The villain pounced onto the shelf, then swiped the yarn ball.
5.The villain crawled under the table, then took the squeaky toy.
6.The villain snuck through the window, then swiped the yarn ball.
7.The villain pounced onto the shelf, then took the squeaky toy.
8.The villain leaped over the counter, then took the squeaky toy.
9.The villain crawled under the table, then grabbed the feather wand.
10.The villain pounced onto the shelf, then grabbed the feather wand.
11.The villain pounced onto the shelf, then snatched the catnip mouse.
12.The villain snuck through the window, then dropped the laser pointer.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Golden Catnip
Culprit: Peanut (High Jump · Squeaky Toy · Left Pawed · Striped Tabby Fur · Warm Sunbeams)
- Clue 1 (Addition): "THE BURGLAR DID NOT CARRY A LASER POINTER"5 + 2 = 7 (T) · 4 + 4 = 8 (C) · 14 + 6 = 20 (G) · 5 + 14 = 19 (O) · 1 + 1 = 2 (R) · 5 + 8 = 13 (Y) · 6 + 3 = 9 (S) · 12 + 4 = 16 (U) · 2 + 3 = 5 (I) · 11 + 6 = 17 (H) · 8 + 4 = 12 (E) · 5 + 9 = 14 (A) · 11 + 4 = 15 (N) · 4 + 7 = 11 (L) · 3 + 1 = 4 (B) · 4 + 6 = 10 (D) · 4 + 2 = 6 (P)
- Clue 2 (Subtraction): "THE BURGLAR USED THEIR LEFT PAW ON THE LATCH"5 - 2 = 3 (T) · 6 - 1 = 5 (O) · 20 - 8 = 12 (H) · 13 - 4 = 9 (B) · 10 - 6 = 4 (S) · 13 - 7 = 6 (A) · 19 - 1 = 18 (L) · 12 - 4 = 8 (U) · 12 - 1 = 11 (G) · 20 - 5 = 15 (D) · 20 - 4 = 16 (F) · 15 - 5 = 10 (P) · 6 - 5 = 1 (R) · 13 - 6 = 7 (I) · 18 - 1 = 17 (C) · 6 - 4 = 2 (E) · 14 - 1 = 13 (W) · 18 - 4 = 14 (N)
- Clue 3 (Skip counting): "THE BURGLAR WAS SLOWED DOWN BY WARM SUNBEAMS"Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (T) · 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 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, ___, 33, 36 = 30 (W) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160 = 140 (B) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (D) · Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (M) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (L) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (A) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (H) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ___, 65, 70 = 60 (S) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (G) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (U) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (N) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (O) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (Y) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (R)
- Clue 4 (Place value): "STRIPED TABBY FUR WAS FOUND NEAR THE SAFE"What number has 5 tens and 4 ones? = 54 (S) · What number has 9 tens and 6 ones? = 96 (Y) · What number has 5 tens and 0 ones? = 50 (D) · What number has 4 tens and 2 ones? = 42 (A) · What number has 6 tens and 4 ones? = 64 (I) · What number has 8 tens and 7 ones? = 87 (O) · What number has 7 tens and 2 ones? = 72 (W) · What number has 6 tens and 0 ones? = 60 (U) · What number has 4 tens and 5 ones? = 45 (N) · What number has 3 tens and 0 ones? = 30 (R) · What number has 8 tens and 8 ones? = 88 (E) · What number has 1 ten and 2 ones? = 12 (B) · What number has 3 tens and 8 ones? = 38 (H) · What number has 5 tens and 3 ones? = 53 (T) · What number has 5 tens and 6 ones? = 56 (F) · What number has 7 tens and 6 ones? = 76 (P)
- Clue 5 (Missing addends): surviving statement (box 7) → Peanut1 + ___ = 9 = 8 · 6 + ___ = 15 = 9 · 6 + ___ = 17 = 11 · 1 + ___ = 4 = 3 · 2 + ___ = 14 = 12 · 4 + ___ = 8 = 4 · 10 + ___ = 20 = 10 · 5 + ___ = 10 = 5 · 7 + ___ = 8 = 1 · 2 + ___ = 4 = 2 · 7 + ___ = 13 = 6
About this mystery
- Grade level
- Grade 1 math
- Math topics
- Addition, Subtraction, Skip counting, Place value, Missing addends
- Reading level
- grades 3-4
- Theme
- The Case of the Missing Golden Catnip — set in Whisker Haven Bakery
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects