Grade 2Reading: grades 1-2Place valueSkip countingAdditionSubtractionMissing addends
The Golden Banana Mystery
The golden banana trophy is gone! It was taken from the clubhouse. We need our junior explorers to follow the tracks and find the bandit.
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 | Special Gear | Animal Buddy | Dominant Hand | Headwear | Favorite Snack |
|---|---|---|---|---|---|
| Diver Dan | Pocket Glider | Spy Squirrel | Right Handed | Blue Bandana | Sweet Mango |
| Explorer Emma | Grappling Hook | Spy Squirrel | Left Handed | Blue Bandana | Coconut Slices |
| Pilot Pete | Pocket Glider | Spy Squirrel | Left Handed | Blue Bandana | Sweet Mango |
| Ranger Rick | Grappling Hook | Spy Squirrel | Right Handed | Blue Bandana | Sweet Mango |
| Rover Riley | Super Trampoline | Tree Frog | Right Handed | Blue Bandana | Sweet Mango |
| Jumper Jack | Super Trampoline | Spy Squirrel | Right Handed | Blue Bandana | Banana Chips |
| Walker Wyatt | Super Trampoline | Spy Squirrel | Right Handed | Green Cap | Sweet Mango |
| Hunter Hope | Pocket Glider | Chameleon Buddy | Right Handed | Blue Bandana | Banana Chips |
| Finder Felix | Sticky Boots | Spy Squirrel | Right Handed | Straw Hat | Sweet Mango |
| Rider Ruby | Grappling Hook | Parrot Scout | Right Handed | Green Cap | Banana Chips |
| Sailor Sally | Grappling Hook | Parrot Scout | Left Handed | Straw Hat | Sweet Mango |
| Paddler Paige | Grappling Hook | Baby Monkey | Left Handed | Straw Hat | Coconut Slices |
| Guide Grace | Sticky Boots | Parrot Scout | Left Handed | Straw Hat | Banana Chips |
| Scout Sam | Super Trampoline | Spy Squirrel | Left Handed | Blue Bandana | Sweet Mango |
| Hiker Henry | Sticky Boots | Parrot Scout | Right Handed | Straw Hat | Coconut Slices |
| Climber Clara | Pocket Glider | Baby Monkey | Right Handed | Blue Bandana | Banana Chips |
| Seeker Sophie | Rope Launcher | Tree Frog | Right Handed | Straw Hat | Sweet Mango |
| Runner Rose | Sticky Boots | Chameleon Buddy | Right Handed | Blue Bandana | Sweet Mango |
| Flyer Fred | Grappling Hook | Baby Monkey | Left Handed | Green Cap | Sweet Mango |
| Fisher Finn | Pocket Glider | Tree Frog | Right Handed | Blue Bandana | Banana Chips |
| Camper Chloe | Super Trampoline | Chameleon Buddy | Right Handed | Blue Bandana | Sweet Mango |
Clue 1
Place value
We find a digital map left by the bandit. The screen shows tens and ones blocks to unlock. Let us group them to find the 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
90
49
29
22
14
43
56
42
T
90
56
20
29
89
43
20
T
90
49
14
98
29
14
T
90
99
29
29
26
99
20
12
What number has 9 tens and 0 ones?T
What number has 2 tens and 9 ones?E
What number has 5 tens and 6 ones?D
What number has 4 tens and 9 ones?H
What number has 9 tens and 9 ones?R
What number has 8 tens and 9 ones?S
What number has 2 tens and 2 ones?B
What number has 4 tens and 3 ones?N
What number has 2 tens and 6 ones?F
What number has 9 tens and 8 ones?V
What number has 4 tens and 2 ones?I
What number has 1 ten and 4 ones?A
What number has 1 ten and 2 ones?G
What number has 2 tens and 0 ones?O
0/14 letters found
Clue 2
Skip counting
Footprints lead up the path. They are spaced out in groups of five. Let us count by fives to follow the tracks!
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
8
15
20
14
16
25
130
100
T
8
T
8
15
28
20
50
T
8
15
20
14
16
55
50
100
T
8
15
T
8
15
20
28
100
55
15
T
8
15
16
25
130
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65G
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24E
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32R
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60W
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20A
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35N
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150D
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18B
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21H
0/11 letters found
Clue 3
Addition
The bandit dropped two bags of shiny stones. We must add the stones in both bags together to see the path.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
U
37
26
50
26
65
50
50
58
38
24
54
27
40
58
40
43
90
26
58
86
24
59
58
58
71
50
81
24
54
43
90
58
13 + 24 =U
21 + 33 =N
17 + 10 =G
40 + 19 =C
12 + 14 =S
35 + 23 =T
23 + 15 =M
48 + 42 =I
13 + 11 =A
25 + 61 =R
14 + 26 =O
31 + 40 =H
23 + 20 =D
24 + 41 =W
20 + 30 =E
44 + 37 =B
0/16 letters found
Clue 4
Subtraction
To run faster, the bandit threw some gear out of a heavy backpack. Subtract the dropped gear 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.
A
78
68
26
69
19
68
A
78
29
60
A
78
29
A
78
22
A
78
46
77
A
78
69
30
28
66
12
29
66
28
19
21
12
53
19
102 - 24 =A
76 - 23 =P
80 - 20 =D
69 - 1 =B
39 - 13 =L
35 - 5 =G
53 - 32 =R
50 - 21 =N
42 - 20 =W
21 - 2 =E
100 - 31 =U
79 - 2 =C
20 - 8 =O
51 - 5 =S
99 - 33 =T
54 - 26 =H
0/16 letters found
Clue 5
Missing addends — the last clue
We need ten bridge keys to cross the river. We only have six keys. How many more keys must we find to cross?
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
4 + ___ = 6
7 + ___ = 18
3 + ___ = 4
1 + ___ = 11
6 + ___ = 12
6 + ___ = 9
3 + ___ = 15
4 + ___ = 13
8 + ___ = 16
10 + ___ = 15
4 + ___ = 11
Step 2 — cross out the sentence with each answer
1.The villain zips across the high cable, then laughs from the tree branch.
2.The villain swings across the river, then splashes into the pool.
3.The villain leaps over the wooden fence, then splashes into the pool.
4.The villain climbs up the giant vine, then splashes into the pool.
5.The villain slides down the muddy hill, then runs toward the secret cave.
6.The villain leaps over the wooden fence, then drops a map on the trail.
7.The villain climbs up the giant vine, then laughs from the tree branch.
8.The villain zips across the high cable, then runs toward the secret cave.
9.The villain swings across the river, then drops a map on the trail.
10.The villain zips across the high cable, then splashes into the pool.
11.The villain leaps over the wooden fence, then laughs from the tree branch.
12.The villain slides down the muddy hill, then drops a map on the trail.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Golden Banana Mystery
Culprit: Diver Dan (Pocket Glider · Spy Squirrel · Right Handed · Blue Bandana · Sweet Mango)
- Clue 1 (Place value): "THE BANDIT DOES NOT HAVE A TREE FROG"What number has 9 tens and 0 ones? = 90 (T) · What number has 2 tens and 9 ones? = 29 (E) · What number has 5 tens and 6 ones? = 56 (D) · What number has 4 tens and 9 ones? = 49 (H) · What number has 9 tens and 9 ones? = 99 (R) · What number has 8 tens and 9 ones? = 89 (S) · What number has 2 tens and 2 ones? = 22 (B) · What number has 4 tens and 3 ones? = 43 (N) · What number has 2 tens and 6 ones? = 26 (F) · What number has 9 tens and 8 ones? = 98 (V) · What number has 4 tens and 2 ones? = 42 (I) · What number has 1 ten and 4 ones? = 14 (A) · What number has 1 ten and 2 ones? = 12 (G) · What number has 2 tens and 0 ones? = 20 (O)
- Clue 2 (Skip counting): "THE BANDIT THREW THE BAG WITH THE RIGHT HAND"Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (T) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (G) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24 = 20 (E) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (R) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60 = 50 (W) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (A) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (N) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (D) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (B) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21 = 15 (H)
- Clue 3 (Addition): "USE SWEET MANGO TO DISTRACT THE BANDIT"13 + 24 = 37 (U) · 21 + 33 = 54 (N) · 17 + 10 = 27 (G) · 40 + 19 = 59 (C) · 12 + 14 = 26 (S) · 35 + 23 = 58 (T) · 23 + 15 = 38 (M) · 48 + 42 = 90 (I) · 13 + 11 = 24 (A) · 25 + 61 = 86 (R) · 14 + 26 = 40 (O) · 31 + 40 = 71 (H) · 23 + 20 = 43 (D) · 24 + 41 = 65 (W) · 20 + 30 = 50 (E) · 44 + 37 = 81 (B)
- Clue 4 (Subtraction): "A BLUE BANDANA WAS CAUGHT ON THE ROPE"102 - 24 = 78 (A) · 76 - 23 = 53 (P) · 80 - 20 = 60 (D) · 69 - 1 = 68 (B) · 39 - 13 = 26 (L) · 35 - 5 = 30 (G) · 53 - 32 = 21 (R) · 50 - 21 = 29 (N) · 42 - 20 = 22 (W) · 21 - 2 = 19 (E) · 100 - 31 = 69 (U) · 79 - 2 = 77 (C) · 20 - 8 = 12 (O) · 51 - 5 = 46 (S) · 99 - 33 = 66 (T) · 54 - 26 = 28 (H)
- Clue 5 (Missing addends): surviving statement (box 4) → Diver Dan4 + ___ = 6 = 2 · 7 + ___ = 18 = 11 · 3 + ___ = 4 = 1 · 1 + ___ = 11 = 10 · 6 + ___ = 12 = 6 · 6 + ___ = 9 = 3 · 3 + ___ = 15 = 12 · 4 + ___ = 13 = 9 · 8 + ___ = 16 = 8 · 10 + ___ = 15 = 5 · 4 + ___ = 11 = 7
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Place value, Skip counting, Addition, Subtraction, Missing addends
- Reading level
- grades 1-2
- Theme
- The Golden Banana Mystery — set in Treehouse Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects