🌊 Unicorns, Mermaids, CatsGrade 2Reading: grades 1-2AdditionSkip countingPlace valueSubtractionMissing addends
The Magic Pearl Mystery
A sneaky troublemaker took the Golden Pearl from the Sparkle Reef Lagoon. Mermaids and sea-cats saw someone swim away. Use your math skills to find the 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 | Magic Power | Special Gear | Active Hand | Hair Color | Foil Item |
|---|---|---|---|---|---|
| Cleo | purr wave | shell wand | left handed | purple hair | warm milk |
| Barnaby | star burst | crystal ring | right handed | blue hair | shiny mirror |
| Bubbles | rainbow glow | pearl belt | left handed | purple hair | shiny mirror |
| Purrfect | rainbow glow | crown | right handed | pink hair | warm milk |
| Whiskers | glitter splash | kelp cape | left handed | pink hair | warm milk |
| Shimmer | bubble blast | pearl belt | right handed | purple hair | shiny mirror |
| Velvet | glitter splash | shell wand | right handed | pink hair | shiny mirror |
| Marina | bubble blast | kelp cape | left handed | blue hair | warm milk |
| Coral | star burst | shell wand | right handed | purple hair | shiny mirror |
| Flounder | glitter splash | kelp cape | left handed | pink hair | shiny mirror |
| Starry | bubble blast | kelp cape | left handed | pink hair | warm milk |
| Misty | rainbow glow | crystal ring | right handed | purple hair | shiny mirror |
| Pearl | star burst | kelp cape | right handed | purple hair | shiny mirror |
| Glimmer | rainbow glow | kelp cape | left handed | blue hair | shiny mirror |
| Nala | glitter splash | crystal ring | left handed | purple hair | warm milk |
| Sandy | rainbow glow | crown | right handed | purple hair | tickle fish |
| Splash | bubble blast | crown | right handed | purple hair | shiny mirror |
| Felix | glitter splash | pearl belt | left handed | purple hair | shiny mirror |
| Ariel | rainbow glow | pearl belt | right handed | purple hair | warm milk |
| Melody | purr wave | kelp cape | left handed | pink hair | warm milk |
| Luna | rainbow glow | crown | right handed | purple hair | warm milk |
Clue 1
Addition
Let us count the shiny pink shells. Add the big ones and the small ones to find the total.
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
24
92
73
T
24
92
62
73
38
68
89
73
74
76
89
T
24
77
73
63
53
63
98
73
93
22
75
63
22
73
11 + 13 =T
23 + 51 =S
41 + 34 =C
19 + 43 =I
33 + 40 =E
59 + 33 =H
33 + 44 =W
38 + 25 =A
41 + 35 =N
7 + 15 =P
58 + 40 =K
43 + 46 =O
17 + 21 =F
26 + 27 =R
39 + 29 =D
44 + 49 =L
0/16 letters found
Clue 2
Skip counting
The cute kittens left little paw prints in the wet sand. Count them by twos to find the way.
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
21
22
100
36
33
26
8
36
33
45
22
100
25
8
12
26
T
21
22
100
130
12
15
22
T
21
22
33
26
8
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55S
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12D
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26H
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42W
Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25G
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120E
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, 100, 110, 120, ___, 140, 150R
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39A
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30N
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35L
0/12 letters found
Clue 3
Place value
The mermaids keep pearls in boxes of ten and cups of one. Read the place value blocks to see how many there are.
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
97
28
26
T
97
28
36
26
50
28
36
23
50
25
21
15
76
47
28
36
56
87
15
36
25
25
21
25
What number has 9 tens and 7 ones?T
What number has 4 tens and 7 ones?S
What number has 7 tens and 6 ones?A
What number has 2 tens and 3 ones?D
What number has 8 tens and 7 ones?Y
What number has 3 tens and 6 ones?I
What number has 2 tens and 6 ones?E
What number has 5 tens and 6 ones?N
What number has 5 tens and 0 ones?F
What number has 2 tens and 8 ones?H
What number has 2 tens and 5 ones?R
What number has 2 tens and 1 one?O
What number has 1 ten and 5 ones?M
0/13 letters found
Clue 4
Subtraction
The sea-unicorns had some yummy kelp treats. A crab ate some of them. Subtract the eaten treats to see what is left.
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
79
47
22
53
28
35
75
T
79
30
75
47
22
83
83
47
56
59
26
35
28
26
83
22
47
56
89
28
36
66
89
T
79
83 - 4 =T
100 - 11 =I
78 - 25 =C
50 - 3 =H
54 - 32 =E
119 - 36 =L
55 - 27 =R
83 - 8 =S
82 - 26 =A
40 - 4 =O
64 - 38 =P
88 - 22 =N
43 - 13 =Y
90 - 31 =D
50 - 15 =U
0/15 letters found
Clue 5
Missing addends — the last clue
We need ten shiny stars to open the secret chest. We only have six stars now. How many more stars do we need?
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
5 + ___ = 16
6 + ___ = 7
4 + ___ = 9
1 + ___ = 8
4 + ___ = 6
4 + ___ = 13
10 + ___ = 20
7 + ___ = 19
3 + ___ = 7
8 + ___ = 16
5 + ___ = 8
Step 2 — cross out the sentence with each answer
1.The villain fired a star burst, then waved a shell wand.
2.The villain threw a glitter splash, then tied a pearl belt.
3.The villain fired a star burst, then shook a kelp cape.
4.The villain shot a bubble blast, then shook a kelp cape.
5.The villain shot a bubble blast, then tied a pearl belt.
6.The villain made a rainbow glow, then shined a crystal ring.
7.The villain fired a star burst, then polished a crown.
8.The villain threw a glitter splash, then waved a shell wand.
9.The villain made a rainbow glow, then polished a crown.
10.The villain threw a glitter splash, then shined a crystal ring.
11.The villain shot a bubble blast, then polished a crown.
12.The villain made a rainbow glow, then shook a kelp cape.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Magic Pearl Mystery
Culprit: Misty (rainbow glow · crystal ring · right handed · purple hair · shiny mirror)
- Clue 1 (Addition): "THE THIEF DOES NOT WEAR A KELP CAPE"11 + 13 = 24 (T) · 23 + 51 = 74 (S) · 41 + 34 = 75 (C) · 19 + 43 = 62 (I) · 33 + 40 = 73 (E) · 59 + 33 = 92 (H) · 33 + 44 = 77 (W) · 38 + 25 = 63 (A) · 41 + 35 = 76 (N) · 7 + 15 = 22 (P) · 58 + 40 = 98 (K) · 43 + 46 = 89 (O) · 17 + 21 = 38 (F) · 26 + 27 = 53 (R) · 39 + 29 = 68 (D) · 44 + 49 = 93 (L)
- Clue 2 (Skip counting): "THE WAND WAS HELD IN THE RIGHT HAND"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (T) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (S) · Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (D) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (H) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (W) · Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25 = 15 (G) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (E) · 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, 100, 110, 120, ___, 140, 150 = 130 (R) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (A) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (N) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (L)
- Clue 3 (Place value): "THE THIEF HID FROM A SHINY MIRROR"What number has 9 tens and 7 ones? = 97 (T) · What number has 4 tens and 7 ones? = 47 (S) · What number has 7 tens and 6 ones? = 76 (A) · What number has 2 tens and 3 ones? = 23 (D) · What number has 8 tens and 7 ones? = 87 (Y) · What number has 3 tens and 6 ones? = 36 (I) · What number has 2 tens and 6 ones? = 26 (E) · What number has 5 tens and 6 ones? = 56 (N) · What number has 5 tens and 0 ones? = 50 (F) · What number has 2 tens and 8 ones? = 28 (H) · What number has 2 tens and 5 ones? = 25 (R) · What number has 2 tens and 1 one? = 21 (O) · What number has 1 ten and 5 ones? = 15 (M)
- Clue 4 (Subtraction): "THE CRUSTY SHELL HAD PURPLE HAIR ON IT"83 - 4 = 79 (T) · 100 - 11 = 89 (I) · 78 - 25 = 53 (C) · 50 - 3 = 47 (H) · 54 - 32 = 22 (E) · 119 - 36 = 83 (L) · 55 - 27 = 28 (R) · 83 - 8 = 75 (S) · 82 - 26 = 56 (A) · 40 - 4 = 36 (O) · 64 - 38 = 26 (P) · 88 - 22 = 66 (N) · 43 - 13 = 30 (Y) · 90 - 31 = 59 (D) · 50 - 15 = 35 (U)
- Clue 5 (Missing addends): surviving statement (box 6) → Misty5 + ___ = 16 = 11 · 6 + ___ = 7 = 1 · 4 + ___ = 9 = 5 · 1 + ___ = 8 = 7 · 4 + ___ = 6 = 2 · 4 + ___ = 13 = 9 · 10 + ___ = 20 = 10 · 7 + ___ = 19 = 12 · 3 + ___ = 7 = 4 · 8 + ___ = 16 = 8 · 5 + ___ = 8 = 3
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Addition, Skip counting, Place value, Subtraction, Missing addends
- Reading level
- grades 1-2
- Theme
- The Magic Pearl Mystery — set in Sparkle Reef Lagoon
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects