🦄 UnicornsGrade 1Reading: grades 1-2AdditionSubtractionSkip countingPlace valueMissing addends
The Great Rainbow Crystal Caper
Someone stole the magical Star Crystal from Sparkle Meadow! Solve the clues to find out which unicorn did 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 Gem | Tail Charm | Hoof Sparkle | Mane Color | Favorite Snack |
|---|---|---|---|---|---|
| Rainbow | Ruby Star | Golden Bell | Left Hoof Sparkle | Pink Mane | Sugar Cube |
| Breeze | Sapphire Moon | Golden Bell | Right Hoof Sparkle | Purple Mane | Sugar Cube |
| Cloudy | Pearl Comet | Silk Tassel | Right Hoof Sparkle | Blue Mane | Sugar Cube |
| Glimmer | Pearl Comet | Crystal Ring | Left Hoof Sparkle | Purple Mane | Sweet Apples |
| Skye | Ruby Star | Glitter Bow | Left Hoof Sparkle | Purple Mane | Sugar Cube |
| Ziggy | Emerald Sun | Golden Bell | Right Hoof Sparkle | Purple Mane | Sugar Cube |
| Twinkle | Ruby Star | Glitter Bow | Right Hoof Sparkle | Purple Mane | Sugar Cube |
| Zoe | Pearl Comet | Crystal Ring | Left Hoof Sparkle | Purple Mane | Fresh Clover |
| Melody | Amber Cloud | Silver Ribbon | Left Hoof Sparkle | Purple Mane | Sugar Cube |
| Starbeam | Ruby Star | Glitter Bow | Left Hoof Sparkle | Purple Mane | Fresh Clover |
| Jasmine | Pearl Comet | Golden Bell | Right Hoof Sparkle | Blue Mane | Fresh Clover |
| Lulu | Pearl Comet | Golden Bell | Left Hoof Sparkle | Pink Mane | Sweet Apples |
| Honey | Amber Cloud | Silk Tassel | Left Hoof Sparkle | Purple Mane | Sugar Cube |
| Petal | Amber Cloud | Silver Ribbon | Left Hoof Sparkle | Blue Mane | Fresh Clover |
| Bubbles | Amber Cloud | Golden Bell | Left Hoof Sparkle | Purple Mane | Sugar Cube |
| Sunbeam | Sapphire Moon | Silver Ribbon | Right Hoof Sparkle | Pink Mane | Sugar Cube |
| Barnaby | Sapphire Moon | Crystal Ring | Left Hoof Sparkle | Blue Mane | Fresh Clover |
| Nova | Pearl Comet | Silk Tassel | Left Hoof Sparkle | Purple Mane | Fresh Clover |
| Willow | Amber Cloud | Silk Tassel | Left Hoof Sparkle | Purple Mane | Fresh Clover |
| Dazzle | Ruby Star | Silver Ribbon | Left Hoof Sparkle | Purple Mane | Sugar Cube |
| Shimmer | Ruby Star | Silk Tassel | Left Hoof Sparkle | Blue Mane | Sugar Cube |
Clue 1
Addition
We gather all the glitter gems found on the path to make 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.
T
19
14
13
T
19
14
17
13
2
4
17
4
11
6
T
19
7
15
13
20
8
16
17
T
19
T
19
13
18
9
6
3
10 + 9 =T
11 + 7 =R
2 + 1 =W
1 + 1 =F
3 + 8 =N
5 + 4 =B
8 + 8 =L
2 + 5 =U
7 + 6 =E
7 + 10 =I
3 + 3 =O
9 + 5 =H
2 + 6 =G
9 + 11 =A
10 + 5 =S
2 + 2 =D
0/16 letters found
Clue 2
Subtraction
We count how many magic berries are left in the basket to narrow down the suspects.
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
13
8
1
18
7
4
4
4
15
W
13
4
6
15
14
10
5
7
4
12
14
11
16
1
2
7
5
7
12
1
2
11
11
12
20 - 7 =W
12 - 1 =O
8 - 4 =S
19 - 9 =K
9 - 3 =P
19 - 1 =N
8 - 1 =E
4 - 2 =H
8 - 3 =L
14 - 6 =I
16 - 1 =A
20 - 4 =M
19 - 5 =R
8 - 7 =T
16 - 4 =F
0/15 letters found
Clue 3
Skip counting
We count the horseshoe prints by twos along the dusty trail.
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
27
50
10
T
27
50
9
10
26
18
T
27
55
12
12
10
100
T
27
55
10
8
T
27
8
18
33
65
8
120
15
33
45
10
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33T
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12A
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65O
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75G
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140R
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14E
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, ___, 20, 22S
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15I
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39U
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55B
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120D
Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18P
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60H
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30F
Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25C
0/15 letters found
Clue 4
Place value
We look at the tens and ones on the stable gate code.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
A
47
23
86
40
23
50
83
57
A
47
79
83
19
A
47
36
40
30
A
47
32
93
26
86
79
45
A
47
60
60
19
83
32
63
83
79
83
What number has 4 tens and 7 ones?A
What number has 9 tens and 3 ones?F
What number has 3 tens and 0 ones?W
What number has 1 ten and 9 ones?H
What number has 3 tens and 6 ones?I
What number has 6 tens and 0 ones?T
What number has 4 tens and 5 ones?D
What number has 5 tens and 0 ones?L
What number has 7 tens and 9 ones?N
What number has 2 tens and 6 ones?O
What number has 5 tens and 7 ones?M
What number has 3 tens and 2 ones?S
What number has 2 tens and 3 ones?P
What number has 8 tens and 3 ones?E
What number has 6 tens and 3 ones?C
What number has 8 tens and 6 ones?U
What number has 4 tens and 0 ones?R
0/17 letters found
Clue 5
Missing addends — the last clue
We fill in the missing magic flower to finish the secret code.
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
3 + ___ = 9
10 + ___ = 12
5 + ___ = 15
4 + ___ = 5
5 + ___ = 9
2 + ___ = 5
8 + ___ = 19
2 + ___ = 10
9 + ___ = 18
8 + ___ = 15
3 + ___ = 8
Step 2 — cross out the sentence with each answer
1.The villain charged the Sapphire Moon, then tied the Silver Ribbon.
2.The villain charged the Ruby Star, then tied the Silver Ribbon.
3.The villain charged the Sapphire Moon, then waved the Silk Tassel.
4.The villain charged the Emerald Sun, then tied the Silver Ribbon.
5.The villain charged the Sapphire Moon, then spun the Crystal Ring.
6.The villain charged the Amber Cloud, then tied the Silver Ribbon.
7.The villain charged the Pearl Comet, then fastened the Glitter Bow.
8.The villain charged the Pearl Comet, then tied the Silver Ribbon.
9.The villain charged the Emerald Sun, then spun the Crystal Ring.
10.The villain charged the Amber Cloud, then shook the Golden Bell.
11.The villain charged the Emerald Sun, then waved the Silk Tassel.
12.The villain charged the Amber Cloud, then waved the Silk Tassel.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Rainbow Crystal Caper
Culprit: Honey (Amber Cloud · Silk Tassel · Left Hoof Sparkle · Purple Mane · Sugar Cube)
- Clue 1 (Addition): "THE THIEF DID NOT USE A GLITTER BOW"10 + 9 = 19 (T) · 11 + 7 = 18 (R) · 2 + 1 = 3 (W) · 1 + 1 = 2 (F) · 3 + 8 = 11 (N) · 5 + 4 = 9 (B) · 8 + 8 = 16 (L) · 2 + 5 = 7 (U) · 7 + 6 = 13 (E) · 7 + 10 = 17 (I) · 3 + 3 = 6 (O) · 9 + 5 = 14 (H) · 2 + 6 = 8 (G) · 9 + 11 = 20 (A) · 10 + 5 = 15 (S) · 2 + 2 = 4 (D)
- Clue 2 (Subtraction): "WITNESS SAW SPARKLES FROM THE LEFT HOOF"20 - 7 = 13 (W) · 12 - 1 = 11 (O) · 8 - 4 = 4 (S) · 19 - 9 = 10 (K) · 9 - 3 = 6 (P) · 19 - 1 = 18 (N) · 8 - 1 = 7 (E) · 4 - 2 = 2 (H) · 8 - 3 = 5 (L) · 14 - 6 = 8 (I) · 16 - 1 = 15 (A) · 20 - 4 = 16 (M) · 19 - 5 = 14 (R) · 8 - 7 = 1 (T) · 16 - 4 = 12 (F)
- Clue 3 (Skip counting): "THE THIEF STOPPED TO EAT A SUGAR CUBE"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (T) · Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (A) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (O) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (G) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (R) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (E) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, ___, 20, 22 = 18 (S) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (I) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (U) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (B) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (D) · Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18 = 12 (P) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60 = 50 (H) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (F) · Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25 = 15 (C)
- Clue 4 (Place value): "A PURPLE MANE HAIR WAS FOUND AT THE SCENE"What number has 4 tens and 7 ones? = 47 (A) · What number has 9 tens and 3 ones? = 93 (F) · What number has 3 tens and 0 ones? = 30 (W) · What number has 1 ten and 9 ones? = 19 (H) · What number has 3 tens and 6 ones? = 36 (I) · What number has 6 tens and 0 ones? = 60 (T) · What number has 4 tens and 5 ones? = 45 (D) · What number has 5 tens and 0 ones? = 50 (L) · What number has 7 tens and 9 ones? = 79 (N) · What number has 2 tens and 6 ones? = 26 (O) · What number has 5 tens and 7 ones? = 57 (M) · What number has 3 tens and 2 ones? = 32 (S) · What number has 2 tens and 3 ones? = 23 (P) · What number has 8 tens and 3 ones? = 83 (E) · What number has 6 tens and 3 ones? = 63 (C) · What number has 8 tens and 6 ones? = 86 (U) · What number has 4 tens and 0 ones? = 40 (R)
- Clue 5 (Missing addends): surviving statement (box 12) → Honey3 + ___ = 9 = 6 · 10 + ___ = 12 = 2 · 5 + ___ = 15 = 10 · 4 + ___ = 5 = 1 · 5 + ___ = 9 = 4 · 2 + ___ = 5 = 3 · 8 + ___ = 19 = 11 · 2 + ___ = 10 = 8 · 9 + ___ = 18 = 9 · 8 + ___ = 15 = 7 · 3 + ___ = 8 = 5
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 Rainbow Crystal Caper — set in Sparkle Meadow
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects