🐱 CatsGrade 1Reading: grades 1-2AdditionSubtractionSkip countingPlace valueMissing addends

The Great Catnip Caper

The golden catnip toy has vanished from the kitty cafe! All the cats are meowing in a panic. We must use our detective skills to find the Sneaky Cat who took it.

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	Lucky Accessory	Dominant Paw	Fur Pattern	Best Distraction
Loki	Night Vision	Pink Collar	Right-pawed	Plain Fur	Catnip Scent
Mittens	Yarn Spin	Pink Collar	Left-pawed	Stripes	Crinkle Ball
Coco	Quiet Meow	Red Booties	Right-pawed	Plain Fur	Crinkle Ball
Socks	Quiet Meow	Blue Bowtie	Right-pawed	Plain Fur	Crinkle Ball
Tom	Super Jump	Blue Bowtie	Left-pawed	Stripes	Feather Toy
Nala	Super Jump	Silver Tag	Right-pawed	Plain Fur	Feather Toy
Bella	Laser Dash	Gold Bell	Left-pawed	Plain Fur	Feather Toy
Whiskers	Super Jump	Silver Tag	Right-pawed	Spots	Catnip Scent
Felix	Night Vision	Pink Collar	Left-pawed	Stripes	Catnip Scent
Shadow	Yarn Spin	Gold Bell	Right-pawed	Spots	Feather Toy
Sylvester	Laser Dash	Gold Bell	Right-pawed	Plain Fur	Crinkle Ball
Garfield	Quiet Meow	Pink Collar	Right-pawed	Plain Fur	Crinkle Ball
Simba	Quiet Meow	Gold Bell	Right-pawed	Stripes	Feather Toy
Milo	Quiet Meow	Silver Tag	Right-pawed	Plain Fur	Feather Toy
Boots	Yarn Spin	Red Booties	Left-pawed	Plain Fur	Crinkle Ball
Daisy	Yarn Spin	Red Booties	Right-pawed	Plain Fur	Crinkle Ball
Leo	Quiet Meow	Pink Collar	Right-pawed	Spots	Crinkle Ball
Luna	Laser Dash	Blue Bowtie	Left-pawed	Stripes	Catnip Scent
Oliver	Super Jump	Blue Bowtie	Left-pawed	Plain Fur	Crinkle Ball
Chloe	Night Vision	Red Booties	Left-pawed	Plain Fur	Crinkle Ball
Fluffy	Super Jump	Silver Tag	Right-pawed	Spots	Crinkle Ball

Clue 1

Addition

We need to count the milk cartons. We found some in the kitchen and some in the fridge. Add them to get the total and find our 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.

3 + 8 =T

6 + 3 =A

3 + 7 =B

2 + 1 =N

3 + 1 =D

3 + 2 =W

8 + 7 =H

7 + 10 =C

9 + 4 =S

7 + 5 =G

1 + 5 =O

8 + 10 =L

7 + 12 =R

6 + 2 =E

0/14 letters found

Clue 2

Subtraction

We had a bag of fish treats, but the thief ate some! Subtract the eaten treats to see how many are left and reveal the next 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.

15 - 8 =T

9 - 1 =D

19 - 1 =H

20 - 1 =P

19 - 5 =A

12 - 2 =I

12 - 9 =R

19 - 3 =S

13 - 9 =E

17 - 4 =W

15 - 6 =C

17 - 5 =G

0/12 letters found

Clue 3

Skip counting

Look at the paw prints in the flour! Count them by twos to follow the path and get 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.

140

110

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60T

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160R

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130L

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, ___, 80, 90N

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55F

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20B

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110A

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80K

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35H

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14O

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32M

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30I

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ___, 26, 28C

Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10D

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45E

0/15 letters found

Clue 4

Place value

We sorted our shiny toy bells into boxes of ten and some single ones. Group them to find the clue hidden in the box.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

What number has 1 ten and 5 ones?P

What number has 7 tens and 2 ones?R

What number has 2 tens and 6 ones?T

What number has 4 tens and 6 ones?C

What number has 2 tens and 7 ones?F

What number has 4 tens and 8 ones?S

What number has 6 tens and 1 one?H

What number has 5 tens and 6 ones?N

What number has 1 ten and 8 ones?E

What number has 8 tens and 1 one?W

What number has 2 tens and 2 ones?L

What number has 9 tens and 1 one?A

What number has 7 tens and 1 one?I

What number has 1 ten and 7 ones?U

0/14 letters found

Clue 5

Missing addends — the last clue

We need nine toy mice for the shelf, but we only see six. Find the missing number to unlock 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

2 + ___ = 4

1 + ___ = 12

6 + ___ = 7

9 + ___ = 16

10 + ___ = 14

2 + ___ = 11

4 + ___ = 12

2 + ___ = 12

6 + ___ = 18

9 + ___ = 14

10 + ___ = 13

Step 2 — cross out the sentence with each answer

1.The villain made a totally silent meow, then joggled their pink collar.

2.The villain spun a huge ball of yarn, then kicked with their red booties.

3.The villain spun a huge ball of yarn, then rang their shiny gold bell.

4.The villain used glowing eyes to see in the dark, then straightened their blue bowtie.

5.The villain dashed after a bright red laser, then joggled their pink collar.

6.The villain made a totally silent meow, then kicked with their red booties.

7.The villain used glowing eyes to see in the dark, then joggled their pink collar.

8.The villain spun a huge ball of yarn, then tapped their small silver tag.

9.The villain used glowing eyes to see in the dark, then tapped their small silver tag.

10.The villain dashed after a bright red laser, then rang their shiny gold bell.

11.The villain made a totally silent meow, then straightened their blue bowtie.

12.The villain dashed after a bright red laser, then kicked with their red booties.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Great Catnip Caper

Culprit: Coco (Quiet Meow · Red Booties · Right-pawed · Plain Fur · Crinkle Ball)

Clue 1 (Addition): "THE CAT DOES NOT WEAR A GOLD BELL"
3 + 8 = 11 (T) · 6 + 3 = 9 (A) · 3 + 7 = 10 (B) · 2 + 1 = 3 (N) · 3 + 1 = 4 (D) · 3 + 2 = 5 (W) · 8 + 7 = 15 (H) · 7 + 10 = 17 (C) · 9 + 4 = 13 (S) · 7 + 5 = 12 (G) · 1 + 5 = 6 (O) · 8 + 10 = 18 (L) · 7 + 12 = 19 (R) · 6 + 2 = 8 (E)
Clue 2 (Subtraction): "THE CAT SWIPED WITH A RIGHT PAW"
15 - 8 = 7 (T) · 9 - 1 = 8 (D) · 19 - 1 = 18 (H) · 20 - 1 = 19 (P) · 19 - 5 = 14 (A) · 12 - 2 = 10 (I) · 12 - 9 = 3 (R) · 19 - 3 = 16 (S) · 13 - 9 = 4 (E) · 17 - 4 = 13 (W) · 15 - 6 = 9 (C) · 17 - 5 = 12 (G)
Clue 3 (Skip counting): "THE CRINKLE BALL FOILED THEM"
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60 = 50 (T) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160 = 140 (R) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (L) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, ___, 80, 90 = 70 (N) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (F) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (B) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (A) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80 = 60 (K) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (H) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (O) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (M) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (I) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ___, 26, 28 = 24 (C) · Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (D) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (E)
Clue 4 (Place value): "PLAIN FUR WAS LEFT AT THE SCENE"
What number has 1 ten and 5 ones? = 15 (P) · What number has 7 tens and 2 ones? = 72 (R) · What number has 2 tens and 6 ones? = 26 (T) · What number has 4 tens and 6 ones? = 46 (C) · What number has 2 tens and 7 ones? = 27 (F) · What number has 4 tens and 8 ones? = 48 (S) · What number has 6 tens and 1 one? = 61 (H) · What number has 5 tens and 6 ones? = 56 (N) · What number has 1 ten and 8 ones? = 18 (E) · What number has 8 tens and 1 one? = 81 (W) · What number has 2 tens and 2 ones? = 22 (L) · What number has 9 tens and 1 one? = 91 (A) · What number has 7 tens and 1 one? = 71 (I) · What number has 1 ten and 7 ones? = 17 (U)
Clue 5 (Missing addends): surviving statement (box 6) → Coco
2 + ___ = 4 = 2 · 1 + ___ = 12 = 11 · 6 + ___ = 7 = 1 · 9 + ___ = 16 = 7 · 10 + ___ = 14 = 4 · 2 + ___ = 11 = 9 · 4 + ___ = 12 = 8 · 2 + ___ = 12 = 10 · 6 + ___ = 18 = 12 · 9 + ___ = 14 = 5 · 10 + ___ = 13 = 3

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 Great Catnip Caper — set in The Purrfect Plaza Cafe
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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