Math Mysteries
🔎 CookiesGrade 2Reading: grades 1-2Place valueAdditionSubtractionSkip countingMissing addends

The Great Cookie Crumble

Oh no! The grand prize Golden Cookie is missing from the display case. There are crumbs everywhere! The Head Baker needs your help to find out who took it before the big bakery show starts.

Suspects

Possible suspects

Cross off a row as each clue rules it out. On screen, tap a row.

21 of 21 still in play
NameFavorite FlavorSecret Baking ToolSprinkle HandFlour Dust ColorCookie Fear
Jack FrostingOatmeal RaisinWooden SpoonRight HandedWhite FlourLoud Crunch
Kiki CocoaLemon DropRed TimerRight HandedBrown CocoaCold Milk
Rosie RaisinMinty MeltRed TimerRight HandedBrown CocoaLoud Crunch
Quinn QuinceOatmeal RaisinSilver WhiskLeft HandedBrown CocoaSticky Jam
Penny PeanutLemon DropGold SpatulaLeft HandedYellow CornmealCold Milk
Izzy IcingLemon DropWooden SpoonLeft HandedBrown CocoaSticky Jam
Hazel NutMinty MeltSilver WhiskRight HandedBrown CocoaSticky Jam
Wally WaferMinty MeltRed TimerLeft HandedBrown CocoaLoud Crunch
Sammy SweetMinty MeltSilver WhiskRight HandedWhite FlourSticky Jam
Ginger SnapMinty MeltRed TimerRight HandedBrown CocoaSticky Jam
Ella SugarOatmeal RaisinSilver WhiskRight HandedBrown CocoaSticky Jam
Zack ZestLemon DropSilver WhiskRight HandedYellow CornmealLoud Crunch
Baker BillyChoco ChipBlue Rolling PinLeft HandedBrown CocoaLoud Crunch
Yara YeastOatmeal RaisinWooden SpoonRight HandedBrown CocoaSticky Jam
Upton UbeOatmeal RaisinBlue Rolling PinLeft HandedYellow CornmealLoud Crunch
Ned NutmegSugar FrostBlue Rolling PinRight HandedBrown CocoaSticky Jam
Mimi MintLemon DropGold SpatulaRight HandedBrown CocoaLoud Crunch
Cookie CarlaChoco ChipSilver WhiskRight HandedWhite FlourCold Milk
Tilly TartSugar FrostGold SpatulaLeft HandedWhite FlourCold Milk
Ollie OatLemon DropBlue Rolling PinRight HandedWhite FlourSticky Jam
Frankie FlourSugar FrostSilver WhiskLeft HandedYellow CornmealSticky Jam
Clue 1

Place value

The baker looks at the recipe code. It has tens and ones. Can you read the numbers to find the 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
40
28
11
T
40
28
73
11
16
77
48
11
87
97
48
T
40
17
87
11
65
46
48
48
77
11
97
87
58
48
48
97
What number has 4 tens and 0 ones?T
What number has 1 ten and 7 ones?U
What number has 6 tens and 5 ones?A
What number has 1 ten and 6 ones?F
What number has 5 tens and 8 ones?P
What number has 7 tens and 3 ones?I
What number has 1 ten and 1 one?E
What number has 2 tens and 8 ones?H
What number has 4 tens and 8 ones?O
What number has 4 tens and 6 ones?W
What number has 9 tens and 7 ones?N
What number has 7 tens and 7 ones?D
What number has 8 tens and 7 ones?S
0/13 letters found
Clue 2

Addition

We need to add the chocolate chips in both bowls. Help us find the sum to get the next 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
35
49
87
T
35
49
77
87
79
77
30
21
77
81
49
T
35
49
72
61
39
87
39
16 + 19 =T
16 + 14 =S
44 + 28 =A
50 + 31 =G
33 + 54 =E
54 + 25 =F
24 + 15 =D
15 + 6 =R
15 + 34 =H
42 + 19 =N
47 + 30 =I
0/11 letters found
Clue 3

Subtraction

Someone ate some cookies from the tray! Subtract the crumbs to see what is left and find a 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
85
13
15
T
85
13
66
15
11
66
79
79
48
74
50
15
89
76
11
79
T
85
66
48
51
59
17
74
32
119 - 34 =T
71 - 21 =R
81 - 15 =I
61 - 2 =Y
38 - 6 =M
87 - 11 =O
30 - 17 =H
105 - 26 =S
98 - 9 =D
77 - 26 =K
86 - 38 =C
29 - 12 =J
32 - 17 =E
29 - 18 =F
102 - 28 =A
0/15 letters found
Clue 4

Skip counting

The cookie stacks are lined up by twos and fives. Count them quickly to unlock this 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.

W
120
55
39
35
80
9
25
22
42
35
W
120
9
110
35
110
35
60
25
80
40
36
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140W
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48R
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50S
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130C
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26B
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80A
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35D
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15N
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100U
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65E
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45O
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45F
0/13 letters found
Clue 5

Missing addends — the last clue

We have six cookies but we need ten. Find how many are missing 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
10 + ___ = 21
6 + ___ = 16
1 + ___ = 9
10 + ___ = 17
9 + ___ = 18
8 + ___ = 20
3 + ___ = 7
8 + ___ = 11
7 + ___ = 8
4 + ___ = 9
4 + ___ = 10
Step 2 — cross out the sentence with each answer
1.The villain frosts a huge sugar cookie, then taps a giant wooden spoon.
2.The villain stirs a bowl of oatmeal raisin, then clinks a shiny silver whisk.
3.The villain squeezes fresh yellow lemon drops, then flips dough with a gold spatula.
4.The villain mixes some cool minty dough, then flips dough with a gold spatula.
5.The villain stirs a bowl of oatmeal raisin, then taps a giant wooden spoon.
6.The villain frosts a huge sugar cookie, then sets a loud red timer.
7.The villain bakes a tray of choco chip cookies, then flips dough with a gold spatula.
8.The villain mixes some cool minty dough, then clinks a shiny silver whisk.
9.The villain bakes a tray of choco chip cookies, then rolls pastry with a blue rolling pin.
10.The villain mixes some cool minty dough, then sets a loud red timer.
11.The villain frosts a huge sugar cookie, then rolls pastry with a blue rolling pin.
12.The villain mixes some cool minty dough, then rolls pastry with a blue rolling pin.
Solve it

Name the culprit

Choose the one suspect left standing.

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 Cookie Crumble — set in The Sweet Treat Bakery
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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