Math Mysteries
🔎 Goats and FarmsGrade 1Reading: grades 1-2Place valueAdditionSubtractionSkip countingMissing addends

The Case of the Missing Pumpkin

Oh no! Someone ate Farmer Brown's giant prize pumpkin right before the big fair. A sneaky goat left messy hoofprints all over the patch. We must find the hungry 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
NameSuper TrickFarm GearHoof PrintCoat ColorFavorite Treat
Cocomud slidingyellow tagleft hoofedbrown spotssweet apples
Barnabyfence chewinggreen bowleft hoofedblack coatgreen clover
Billyhay balancingpurple ribbonleft hoofedblack coatgreen clover
Pipmud slidingred collarleft hoofedbrown spotsgreen clover
Groverhigh jumpinggreen bowleft hoofedwhite woolsweet apples
Pennyhay balancingyellow tagleft hoofedblack coatsweet apples
Buttercupmud slidingblue bandanaright hoofedbrown spotscrunchy oats
Sampsonloud bleatingred collarleft hoofedwhite woolsweet apples
Gizmofence chewingred collarleft hoofedblack coatgreen clover
Otishigh jumpingpurple ribbonright hoofedblack coatgreen clover
Tobymud slidingred collarleft hoofedwhite woolgreen clover
Nannymud slidingblue bandanaleft hoofedblack coatsweet apples
Gilesmud slidinggreen bowleft hoofedwhite woolgreen clover
Hazelloud bleatingpurple ribbonleft hoofedblack coatsweet apples
Peachesfence chewingpurple ribbonleft hoofedblack coatsweet apples
Cloverfence chewingblue bandanaright hoofedblack coatsweet apples
Tuckerhigh jumpinggreen bowright hoofedblack coatsweet apples
Wafflesfence chewingblue bandanaright hoofedwhite woolsweet apples
Mabelhay balancinggreen bowleft hoofedblack coatsweet apples
Daisyhigh jumpingyellow tagleft hoofedblack coatsweet apples
Bessiefence chewingblue bandanaleft hoofedblack coatcrunchy oats
Clue 1

Place value

The sheep count the hay bales. They group them into tens and ones. The number they make points to a secret map.

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
99
91
23
T
99
91
32
23
52
27
54
23
92
58
54
T
99
35
23
56
29
56
61
95
29
61
38
23
29
32
67
67
54
58
What number has 9 tens and 9 ones?T
What number has 5 tens and 2 ones?F
What number has 5 tens and 4 ones?O
What number has 2 tens and 7 ones?D
What number has 2 tens and 3 ones?E
What number has 5 tens and 8 ones?N
What number has 9 tens and 1 one?H
What number has 6 tens and 7 ones?B
What number has 6 tens and 1 one?P
What number has 3 tens and 8 ones?L
What number has 9 tens and 2 ones?S
What number has 2 tens and 9 ones?R
What number has 5 tens and 6 ones?A
What number has 9 tens and 5 ones?U
What number has 3 tens and 5 ones?W
What number has 3 tens and 2 ones?I
0/16 letters found
Clue 2

Addition

Let us add the fresh eggs in the barn. When we combine the nests, we find a hidden note under the straw.

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
9
2
3
16
7
3
11
15
8
17
10
11
T
9
14
16
5
3
19
T
9
2
10
10
19
3
4
5 + 4 =T
3 + 1 =D
5 + 14 =F
1 + 1 =H
9 + 7 =S
8 + 7 =K
6 + 11 =G
2 + 3 =L
7 + 4 =A
5 + 2 =N
1 + 2 =E
8 + 6 =I
5 + 3 =Y
5 + 5 =O
0/14 letters found
Clue 3

Subtraction

The ducks have a basket of apples. Some apples rolled away. Subtract the lost apples to read the dusty hoof print.

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
12
10
11
8
6
2
2
17
6
14
2
9
8
11
19
19
7
11
11
T
12
17
13
13
2
11
19
15 - 3 =T
19 - 5 =N
20 - 1 =S
12 - 6 =I
17 - 7 =H
19 - 8 =E
10 - 2 =V
18 - 5 =P
18 - 9 =O
19 - 2 =A
8 - 1 =W
10 - 8 =L
0/12 letters found
Clue 4

Skip counting

We need to count the fence posts. We skip count by fives to reach the far pasture. A clue is carved on the last post.

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
28
55
26
100
18
15
50
36
80
33
60
90
60
100
33
6
33
6
6
39
55
65
60
55
15
55
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32W
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42B
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10T
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70D
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65E
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, ___, 20, 22U
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120O
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100L
Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25N
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39A
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45H
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ___, 65, 70C
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75S
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30F
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110K
0/15 letters found
Clue 5

Missing addends — the last clue

The food bowl is not full. We need to find the missing scoops to make ten. The missing number unlocks a locked diary.

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 + ___ = 6
9 + ___ = 10
1 + ___ = 13
10 + ___ = 21
1 + ___ = 7
4 + ___ = 14
4 + ___ = 6
6 + ___ = 13
4 + ___ = 13
9 + ___ = 17
7 + ___ = 12
Step 2 — cross out the sentence with each answer
1.The villain balances a hay bale on their head, then straightens their green bow.
2.The villain slides through the wet mud, then snaps their red collar.
3.The villain slides through the wet mud, then waves their blue bandana.
4.The villain balances a hay bale on their head, then shakes their yellow tag.
5.The villain jumps over the high gate, then waves their blue bandana.
6.The villain chews a hole in the fence, then waves their blue bandana.
7.The villain chews a hole in the fence, then shakes their yellow tag.
8.The villain bleats a very loud song, then waves their blue bandana.
9.The villain balances a hay bale on their head, then polishes their purple ribbon.
10.The villain chews a hole in the fence, then polishes their purple ribbon.
11.The villain balances a hay bale on their head, then snaps their red collar.
12.The villain jumps over the high gate, then shakes their yellow tag.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 1 math
Math topics
Place value, Addition, Subtraction, Skip counting, Missing addends
Reading level
grades 1-2
Theme
The Case of the Missing Pumpkin — set in Sunny Valley Farm
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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