🦄 Unicorns, CatsGrade 2Reading: grades 1-2Place valueAdditionSubtractionSkip countingMissing addends
The Great Crystal Cat-astrophe
The Giant Rainbow Crystal is missing from the treehouse! Without it, the magical forest will lose its glow. The Chief Sparkle Maker needs your help. One of the cat-corns 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 | magic trick | special gear | secret habit | mane color | weakness |
|---|---|---|---|---|---|
| Bella | sparkle jump | bubble shield | right pawed | gold mane | shiny bells |
| Mittens | rainbow blast | bubble shield | right pawed | pink mane | shiny bells |
| Ziggy | moon purr | cloud float | right pawed | blue mane | shiny bells |
| Luna | rainbow blast | laser eyes | right pawed | pink mane | shiny bells |
| Oliver | rainbow blast | jingle bells | left pawed | gold mane | spray water |
| Sparky | sparkle jump | jingle bells | left pawed | pink mane | shiny bells |
| Twinkle | rainbow blast | laser eyes | right pawed | gold mane | spray water |
| Puff | glitter dash | catnip mist | right pawed | pink mane | spray water |
| Pip | rainbow blast | catnip mist | right pawed | pink mane | shiny bells |
| Simba | star bounce | jingle bells | right pawed | pink mane | shiny bells |
| Pixie | star bounce | bubble shield | left pawed | pink mane | shiny bells |
| Clover | moon purr | bubble shield | right pawed | gold mane | spray water |
| Boots | rainbow blast | jingle bells | right pawed | gold mane | spray water |
| Felix | moon purr | jingle bells | left pawed | gold mane | shiny bells |
| Daisy | star bounce | jingle bells | left pawed | blue mane | spray water |
| Barnaby | moon purr | jingle bells | right pawed | gold mane | shiny bells |
| Cookie | glitter dash | bubble shield | right pawed | pink mane | yarn balls |
| Garfield | moon purr | bubble shield | right pawed | pink mane | shiny bells |
| Cleo | star bounce | cloud float | left pawed | gold mane | shiny bells |
| Milo | moon purr | laser eyes | left pawed | gold mane | yarn balls |
| Buttercup | star bounce | jingle bells | right pawed | gold mane | shiny bells |
Clue 1
Place value
We found a secret box with tens and ones blocks. If we find the real number, the box will open to show a clue about the thief's extra power.
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
29
81
35
55
33
35
77
41
39
65
77
T
29
15
25
35
55
33
25
T
29
26
55
35
65
77
T
29
33
95
59
82
95
55
T
29
What number has 2 tens and 9 ones?T
What number has 3 tens and 3 ones?N
What number has 5 tens and 9 ones?P
What number has 8 tens and 1 one?H
What number has 2 tens and 6 ones?U
What number has 9 tens and 5 ones?I
What number has 4 tens and 1 one?K
What number has 7 tens and 7 ones?A
What number has 5 tens and 5 ones?S
What number has 3 tens and 5 ones?E
What number has 6 tens and 5 ones?C
What number has 8 tens and 2 ones?M
What number has 3 tens and 9 ones?Y
What number has 2 tens and 5 ones?O
What number has 1 ten and 5 ones?D
0/15 letters found
Clue 2
Addition
Let's count the shiny stars in the garden! We add the small stars and the big stars together to find a clue about how the thief acts.
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
73
55
87
65
85
87
47
71
79
22
47
T
73
68
91
47
88
88
89
85
68
92
89
T
73
55
T
73
55
87
91
89
68
55
T
73
96
47
92
30 + 43 =T
41 + 46 =E
28 + 19 =A
53 + 26 =Y
57 + 35 =W
42 + 23 =S
28 + 63 =R
26 + 59 =N
41 + 27 =G
58 + 30 =B
32 + 23 =H
46 + 50 =P
46 + 25 =K
36 + 53 =I
13 + 9 =C
0/15 letters found
Clue 3
Subtraction
The thief knocked over a jar of pink crystals. Some crystals fell into the grass and were lost. Subtract them to see what the thief is afraid of!
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
60
12
14
45
24
T
60
83
24
48
24
29
24
75
21
83
30
42
T
60
12
14
54
12
68
48
75
43
14
17
17
54
98 - 38 =T
46 - 3 =B
36 - 15 =F
62 - 33 =W
70 - 28 =M
25 - 1 =A
73 - 28 =C
91 - 16 =Y
50 - 2 =N
64 - 10 =S
121 - 38 =R
72 - 4 =I
65 - 35 =O
18 - 1 =L
18 - 6 =H
37 - 23 =E
0/16 letters found
Clue 4
Skip counting
There are tiny paw prints in the wet mud! Let's count the paws by twos to follow the path and find a clue about the thief's hair.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
W
33
36
70
90
45
80
39
18
26
130
9
80
39
18
90
70
9
24
130
120
14
27
26
8
120
80
55
40
9
80
36
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39W
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140I
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42E
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100N
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18G
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12P
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110O
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50M
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150R
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30T
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, ___, 21, 24S
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33H
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65K
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15A
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80F
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ___, 26, 28B
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45D
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55U
0/18 letters found
Clue 5
Missing addends — the last clue
We need ten magic keys to open the final gate. We only have some of them. Find how many more keys we need to get the last 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
7 + ___ = 9
10 + ___ = 14
8 + ___ = 15
8 + ___ = 11
5 + ___ = 14
10 + ___ = 16
3 + ___ = 8
7 + ___ = 19
6 + ___ = 17
4 + ___ = 14
7 + ___ = 15
Step 2 — cross out the sentence with each answer
1.The villain shoots a rainbow blast to clear the path, then blocks the traps with a bubble shield.
2.The villain makes a soft moon purr to sleep the guards, then blocks the traps with a bubble shield.
3.The villain uses a star bounce to leap over the wall, then blocks the traps with a bubble shield.
4.The villain uses a star bounce to leap over the wall, then makes a quiet ring with jingle bells.
5.The villain does a sparkle jump onto the roof, then cuts through the glass with laser eyes.
6.The villain speeds away with a quick glitter dash, then drifts away on a soft cloud float.
7.The villain shoots a rainbow blast to clear the path, then cuts through the glass with laser eyes.
8.The villain speeds away with a quick glitter dash, then makes a quiet ring with jingle bells.
9.The villain speeds away with a quick glitter dash, then blocks the traps with a bubble shield.
10.The villain makes a soft moon purr to sleep the guards, then cuts through the glass with laser eyes.
11.The villain makes a soft moon purr to sleep the guards, then drifts away on a soft cloud float.
12.The villain speeds away with a quick glitter dash, then hides the escape route with catnip mist.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Crystal Cat-astrophe
Culprit: Mittens (rainbow blast · bubble shield · right pawed · pink mane · shiny bells)
- Clue 1 (Place value): "THE SNEAKY CAT DOES NOT USE CATNIP MIST"What number has 2 tens and 9 ones? = 29 (T) · What number has 3 tens and 3 ones? = 33 (N) · What number has 5 tens and 9 ones? = 59 (P) · What number has 8 tens and 1 one? = 81 (H) · What number has 2 tens and 6 ones? = 26 (U) · What number has 9 tens and 5 ones? = 95 (I) · What number has 4 tens and 1 one? = 41 (K) · What number has 7 tens and 7 ones? = 77 (A) · What number has 5 tens and 5 ones? = 55 (S) · What number has 3 tens and 5 ones? = 35 (E) · What number has 6 tens and 5 ones? = 65 (C) · What number has 8 tens and 2 ones? = 82 (M) · What number has 3 tens and 9 ones? = 39 (Y) · What number has 2 tens and 5 ones? = 25 (O) · What number has 1 ten and 5 ones? = 15 (D)
- Clue 2 (Addition): "THE SNEAKY CAT GRABBING WITH THE RIGHT PAW"30 + 43 = 73 (T) · 41 + 46 = 87 (E) · 28 + 19 = 47 (A) · 53 + 26 = 79 (Y) · 57 + 35 = 92 (W) · 42 + 23 = 65 (S) · 28 + 63 = 91 (R) · 26 + 59 = 85 (N) · 41 + 27 = 68 (G) · 58 + 30 = 88 (B) · 32 + 23 = 55 (H) · 46 + 50 = 96 (P) · 46 + 25 = 71 (K) · 36 + 53 = 89 (I) · 13 + 9 = 22 (C)
- Clue 3 (Subtraction): "THE CAT RAN AWAY FROM THE SHINY BELLS"98 - 38 = 60 (T) · 46 - 3 = 43 (B) · 36 - 15 = 21 (F) · 62 - 33 = 29 (W) · 70 - 28 = 42 (M) · 25 - 1 = 24 (A) · 73 - 28 = 45 (C) · 91 - 16 = 75 (Y) · 50 - 2 = 48 (N) · 64 - 10 = 54 (S) · 121 - 38 = 83 (R) · 72 - 4 = 68 (I) · 65 - 35 = 30 (O) · 18 - 1 = 17 (L) · 18 - 6 = 12 (H) · 37 - 23 = 14 (E)
- Clue 4 (Skip counting): "WE FOUND STRANDS OF A BRIGHT PINK MANE"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (W) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (I) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (E) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100 = 80 (N) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (G) · Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (P) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (O) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50 = 40 (M) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (R) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (T) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, ___, 21, 24 = 18 (S) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (H) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (K) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (A) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (F) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ___, 26, 28 = 24 (B) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (D) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (U)
- Clue 5 (Missing addends): surviving statement (box 1) → Mittens7 + ___ = 9 = 2 · 10 + ___ = 14 = 4 · 8 + ___ = 15 = 7 · 8 + ___ = 11 = 3 · 5 + ___ = 14 = 9 · 10 + ___ = 16 = 6 · 3 + ___ = 8 = 5 · 7 + ___ = 19 = 12 · 6 + ___ = 17 = 11 · 4 + ___ = 14 = 10 · 7 + ___ = 15 = 8
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Place value, Addition, Subtraction, Skip counting, Missing addends
- Reading level
- grades 1-2
- Theme
- The Great Crystal Cat-astrophe — set in Rainbow Kitty Forest
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects