🏎️ ScarecrowsGrade 1Reading: grades 1-2AdditionSubtractionSkip countingPlace valueMissing addends
The Case of the Missing Golden Corn
Someone snuck into the cornfield at night and took the golden ears! The farm animals saw a shadowy scarecrow sneaking around. Use your math clues to find out who 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 | Main Trick | Farm Gear | Glove Type | Straw Color | Scared By |
|---|---|---|---|---|---|
| Pip Seedling | Fence Jumping | Wooden Pitchfork | Left Handed | Yellow Straw | Loud Crows |
| Crowsy Clara | Fence Jumping | Copper Bell | Left Handed | Yellow Straw | Shiny Pie Pans |
| Farmer Jed | Sack Hoisting | Copper Bell | Left Handed | Yellow Straw | Barking Dogs |
| Scrappy Sam | Tractor Steering | Tin Lantern | Right Handed | Red Straw | Barking Dogs |
| Oatsie Miller | Tractor Steering | Wooden Pitchfork | Left Handed | Brown Straw | Barking Dogs |
| Willa Wheat | Fence Jumping | Wooden Pitchfork | Right Handed | Red Straw | Loud Crows |
| Barnaby Straw | Tractor Steering | Tin Lantern | Left Handed | Yellow Straw | Shiny Pie Pans |
| Abby Acorn | Fence Jumping | Wooden Pitchfork | Left Handed | Yellow Straw | Shiny Pie Pans |
| Tractor Tim | Tractor Steering | Copper Bell | Left Handed | Brown Straw | Barking Dogs |
| Plowman Paul | Pumpkin Rolling | Burlap Sack | Right Handed | Brown Straw | Barking Dogs |
| Corny Carl | Fence Jumping | Tin Lantern | Right Handed | Yellow Straw | Shiny Pie Pans |
| Silo Susan | Sack Hoisting | Rusty Rake | Left Handed | Red Straw | Shiny Pie Pans |
| Burlap Bob | Fence Jumping | Burlap Sack | Left Handed | Brown Straw | Loud Crows |
| Barley Ben | Sack Hoisting | Rusty Rake | Left Handed | Yellow Straw | Loud Crows |
| Sunny Harvest | Crow Whistling | Copper Bell | Left Handed | Yellow Straw | Barking Dogs |
| Rusty Field | Pumpkin Rolling | Rusty Rake | Left Handed | Brown Straw | Shiny Pie Pans |
| Rowan Roots | Crow Whistling | Burlap Sack | Left Handed | Yellow Straw | Shiny Pie Pans |
| Sally Sunflower | Sack Hoisting | Wooden Pitchfork | Left Handed | Brown Straw | Loud Crows |
| Haystack Hannah | Sack Hoisting | Burlap Sack | Left Handed | Yellow Straw | Shiny Pie Pans |
| Maizie Cob | Pumpkin Rolling | Rusty Rake | Left Handed | Red Straw | Shiny Pie Pans |
| Crowley Jack | Sack Hoisting | Tin Lantern | Right Handed | Yellow Straw | Shiny Pie Pans |
Clue 1
Addition
Farmer Jed counted ears of corn in two baskets to find a hint.
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
10
6
4
15
12
4
13
7
16
T
10
6
20
4
14
19
5
4
15
12
5
T
10
3
13
9
9
16
13
3
5
2
2
4
9
17
4
18
18
5 + 5 =T
5 + 10 =S
4 + 1 =O
3 + 6 =R
11 + 8 =D
6 + 6 =N
8 + 8 =Y
1 + 5 =H
3 + 1 =E
12 + 8 =I
9 + 4 =A
5 + 9 =F
1 + 1 =P
12 + 5 =B
10 + 8 =L
1 + 2 =C
3 + 4 =K
0/17 letters found
Clue 2
Subtraction
Sally subtracted the eaten apples from the total to track the thief.
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
15
9
11
T
15
6
14
1
5
2
2
9
3
8
14
10
11
12
T
15
9
14
13
16
11
16
T
15
3
7
1
9
16 - 1 =T
20 - 8 =F
16 - 6 =L
18 - 2 =D
15 - 6 =H
10 - 9 =C
7 - 2 =K
10 - 4 =R
4 - 2 =S
12 - 1 =E
17 - 4 =N
17 - 9 =W
17 - 3 =A
4 - 1 =O
14 - 7 =U
0/15 letters found
Clue 3
Skip counting
Pip counted cornstalks by twos down the long muddy row.
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
60
55
35
28
42
36
35
70
36
40
28
S
60
26
50
35
6
55
39
70
28
70
90
39
55
70
30
35
24
24
40
35
28
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80S
Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50V
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80E
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 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48Y
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70R
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42P
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ___, 26, 28L
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65H
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50A
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110D
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30F
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10G
0/15 letters found
Clue 4
Place value
Oatsie looked at the tens and ones on the barn storage board.
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
63
88
54
16
18
54
82
77
41
54
14
T
63
16
52
31
T
63
16
31
14
91
54
41
41
31
65
16
T
63
75
82
65
What number has 6 tens and 3 ones?T
What number has 8 tens and 8 ones?H
What number has 3 tens and 1 one?O
What number has 7 tens and 7 ones?K
What number has 6 tens and 5 ones?W
What number has 1 ten and 4 ones?F
What number has 5 tens and 2 ones?P
What number has 1 ten and 6 ones?S
What number has 4 tens and 1 one?L
What number has 7 tens and 5 ones?R
What number has 1 ten and 8 ones?N
What number has 8 tens and 2 ones?A
What number has 9 tens and 1 one?Y
What number has 5 tens and 4 ones?E
0/14 letters found
Clue 5
Missing addends — the last clue
Carl had to figure out how many missing pumpkins were taken.
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 + ___ = 17
2 + ___ = 9
6 + ___ = 11
7 + ___ = 8
7 + ___ = 19
3 + ___ = 5
2 + ___ = 10
6 + ___ = 10
10 + ___ = 21
2 + ___ = 5
6 + ___ = 15
Step 2 — cross out the sentence with each answer
1.The villain rolls heavy pumpkins, then jingles a copper bell.
2.The villain whistles to crows, then scrapes a rusty rake.
3.The villain hoists big grain sacks, then waves a wooden pitchfork.
4.The villain rolls heavy pumpkins, then grabs a burlap sack.
5.The villain steers old tractors, then shines a tin lantern.
6.The villain jumps high fences, then waves a wooden pitchfork.
7.The villain whistles to crows, then grabs a burlap sack.
8.The villain jumps high fences, then scrapes a rusty rake.
9.The villain rolls heavy pumpkins, then waves a wooden pitchfork.
10.The villain hoists big grain sacks, then grabs a burlap sack.
11.The villain jumps high fences, then shines a tin lantern.
12.The villain hoists big grain sacks, then jingles a copper bell.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Golden Corn
Culprit: Abby Acorn (Fence Jumping · Wooden Pitchfork · Left Handed · Yellow Straw · Shiny Pie Pans)
- Clue 1 (Addition): "THE SNEAKY THIEF DOES NOT CARRY A COPPER BELL"5 + 5 = 10 (T) · 5 + 10 = 15 (S) · 4 + 1 = 5 (O) · 3 + 6 = 9 (R) · 11 + 8 = 19 (D) · 6 + 6 = 12 (N) · 8 + 8 = 16 (Y) · 1 + 5 = 6 (H) · 3 + 1 = 4 (E) · 12 + 8 = 20 (I) · 9 + 4 = 13 (A) · 5 + 9 = 14 (F) · 1 + 1 = 2 (P) · 12 + 5 = 17 (B) · 10 + 8 = 18 (L) · 1 + 2 = 3 (C) · 3 + 4 = 7 (K)
- Clue 2 (Subtraction): "THE TRACKS SHOW A LEFT HANDED TOUCH"16 - 1 = 15 (T) · 20 - 8 = 12 (F) · 16 - 6 = 10 (L) · 18 - 2 = 16 (D) · 15 - 6 = 9 (H) · 10 - 9 = 1 (C) · 7 - 2 = 5 (K) · 10 - 4 = 6 (R) · 4 - 2 = 2 (S) · 12 - 1 = 11 (E) · 17 - 4 = 13 (N) · 17 - 9 = 8 (W) · 17 - 3 = 14 (A) · 4 - 1 = 3 (O) · 14 - 7 = 7 (U)
- Clue 3 (Skip counting): "SHINY PIE PANS FRIGHTENED THE VILLAIN"Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80 = 60 (S) · Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50 = 30 (V) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (E) · 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 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (Y) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70 = 50 (R) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (P) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ___, 26, 28 = 24 (L) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (T) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (H) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50 = 40 (A) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (D) · 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 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (G)
- Clue 4 (Place value): "THE SNEAK LEFT SPOTS OF YELLOW STRAW"What number has 6 tens and 3 ones? = 63 (T) · What number has 8 tens and 8 ones? = 88 (H) · What number has 3 tens and 1 one? = 31 (O) · What number has 7 tens and 7 ones? = 77 (K) · What number has 6 tens and 5 ones? = 65 (W) · What number has 1 ten and 4 ones? = 14 (F) · What number has 5 tens and 2 ones? = 52 (P) · What number has 1 ten and 6 ones? = 16 (S) · What number has 4 tens and 1 one? = 41 (L) · What number has 7 tens and 5 ones? = 75 (R) · What number has 1 ten and 8 ones? = 18 (N) · What number has 8 tens and 2 ones? = 82 (A) · What number has 9 tens and 1 one? = 91 (Y) · What number has 5 tens and 4 ones? = 54 (E)
- Clue 5 (Missing addends): surviving statement (box 6) → Abby Acorn7 + ___ = 17 = 10 · 2 + ___ = 9 = 7 · 6 + ___ = 11 = 5 · 7 + ___ = 8 = 1 · 7 + ___ = 19 = 12 · 3 + ___ = 5 = 2 · 2 + ___ = 10 = 8 · 6 + ___ = 10 = 4 · 10 + ___ = 21 = 11 · 2 + ___ = 5 = 3 · 6 + ___ = 15 = 9
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 Case of the Missing Golden Corn — set in Sunny Patch Cornfield
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects