🔎 Bass fishingGrade 1Reading: grades 1-2AdditionSubtractionSkip countingPlace valueMissing addends
The Great Bass Boat Mystery
Someone hid the Golden Trophy Bass right before the big tournament weigh-in! Use your lake clues and solve the math problems 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 | Favorite Lure | Special Gear | Casting Hand | Cap Color | Distraction |
|---|---|---|---|---|---|
| Lake Lily | jighead | trolling motor | left handed | camo tan cap | camera flash |
| Dock Dave | jighead | trolling motor | left handed | neon green cap | camera flash |
| Captain Clara | topwater frog | polaroid glasses | left handed | camo tan cap | boat horn blast |
| Wader Will | spinnerbait | trolling motor | right handed | bright yellow cap | boat horn blast |
| Trout Tina | jighead | braided line | right handed | neon green cap | camera flash |
| Tackle Tim | spinnerbait | polaroid glasses | left handed | bright yellow cap | camera flash |
| Boater Bob | crankbait | braided line | left handed | camo tan cap | camera flash |
| Pond Pete | topwater frog | sonar scope | right handed | bright yellow cap | mosquito buzzing |
| Skipper Mia | jighead | polaroid glasses | left handed | camo tan cap | mosquito buzzing |
| River Rose | rubber worm | sonar scope | right handed | neon green cap | boat horn blast |
| Fisher Finn | spinnerbait | sonar scope | left handed | camo tan cap | camera flash |
| Marina Mary | topwater frog | braided line | left handed | bright yellow cap | mosquito buzzing |
| Bait Master Ben | crankbait | net launcher | left handed | camo tan cap | camera flash |
| Guppy Gabe | jighead | trolling motor | left handed | bright yellow cap | boat horn blast |
| Bass Bill | crankbait | braided line | right handed | neon green cap | mosquito buzzing |
| Splash Seth | rubber worm | polaroid glasses | right handed | camo tan cap | camera flash |
| Casting Cole | jighead | polaroid glasses | right handed | bright yellow cap | mosquito buzzing |
| Bay Bella | rubber worm | sonar scope | left handed | camo tan cap | camera flash |
| Fisher Sam | rubber worm | sonar scope | right handed | bright yellow cap | mosquito buzzing |
| Lunker Leo | topwater frog | polaroid glasses | right handed | camo tan cap | mosquito buzzing |
| Reel Hank | rubber worm | sonar scope | left handed | neon green cap | camera flash |
Clue 1
Addition
Ranger Rick counts all the shiny lures collected from the dock.
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
19
15
12
7
15
14
16
18
13
10
6
6
14
10
7
11
4
15
12
7
4
T
9
8
12
15
20
17
14
10
11
15
11
6
10
7
15
7 + 2 =T
3 + 1 =O
3 + 9 =S
3 + 4 =N
2 + 6 =U
9 + 10 =H
10 + 5 =E
8 + 6 =A
4 + 7 =D
11 + 5 =K
5 + 8 =V
14 + 6 =B
4 + 2 =L
9 + 9 =Y
5 + 5 =I
5 + 12 =R
0/16 letters found
Clue 2
Subtraction
Fisher Finn lost some plastic worms when a big bass splashed away.
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
3
8
12
18
2
T
3
1
12
10
10
10
11
18
11
14
12
9
T
3
8
11
1
4
12
4
16
11
10
T
3
11 - 8 =T
18 - 7 =A
18 - 8 =S
16 - 4 =E
18 - 2 =C
16 - 7 =F
7 - 3 =D
20 - 6 =L
11 - 3 =H
19 - 1 =W
3 - 2 =N
11 - 9 =I
0/12 letters found
Clue 3
Skip counting
Captain Clara counts the live minnows in the bait bucket by twos.
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
20
9
50
120
16
90
9
140
40
50
14
21
90
70
120
12
9
12
21
65
50
36
50
110
9
140
50
8
90
50
14
20
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45T
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15E
Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18D
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130M
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, ___, 80, 90I
Skip-count by 5s. Fill the blank: 5, 10, 15, ___, 25, 30H
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160R
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60A
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18S
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75Y
Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60W
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42C
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12F
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27B
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20G
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140N
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110L
0/17 letters found
Clue 4
Place value
Angler Ava looks at the tens and ones digits on the weigh-in scale.
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
11
39
43
38
43
T
11
43
99
T
11
40
87
43
24
46
47
51
38
68
99
68
31
46
T
11
68
51
99
68
62
What number has 1 ten and 1 one?T
What number has 8 tens and 7 ones?V
What number has 6 tens and 2 ones?P
What number has 4 tens and 7 ones?U
What number has 4 tens and 0 ones?I
What number has 4 tens and 6 ones?O
What number has 6 tens and 8 ones?A
What number has 4 tens and 3 ones?E
What number has 3 tens and 9 ones?H
What number has 3 tens and 8 ones?D
What number has 9 tens and 9 ones?C
What number has 3 tens and 1 one?M
What number has 5 tens and 1 one?N
What number has 2 tens and 4 ones?F
0/14 letters found
Clue 5
Missing addends — the last clue
Bait Master Ben needs to find how many more floats fit in his box.
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
8 + ___ = 15
3 + ___ = 11
7 + ___ = 10
1 + ___ = 12
7 + ___ = 11
4 + ___ = 16
5 + ___ = 7
2 + ___ = 8
10 + ___ = 19
6 + ___ = 7
2 + ___ = 12
Step 2 — cross out the sentence with each answer
1.The villain cast a shiny spinnerbait, then scooped a prize with a net launcher.
2.The villain dropped a heavy jighead, then scanned the bay with a sonar scope.
3.The villain jiggled a rubber worm, then scanned the bay with a sonar scope.
4.The villain cast a shiny spinnerbait, then spotted fish with polaroid glasses.
5.The villain cast a shiny spinnerbait, then scanned the bay with a sonar scope.
6.The villain jiggled a rubber worm, then spotted fish with polaroid glasses.
7.The villain reeled in a crankbait, then scooped a prize with a net launcher.
8.The villain dropped a heavy jighead, then zipped off with a trolling motor.
9.The villain reeled in a crankbait, then scanned the bay with a sonar scope.
10.The villain dropped a heavy jighead, then scooped a prize with a net launcher.
11.The villain tossed a topwater frog, then scanned the bay with a sonar scope.
12.The villain cast a shiny spinnerbait, then zipped off with a trolling motor.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Bass Boat Mystery
Culprit: Fisher Finn (spinnerbait · sonar scope · left handed · camo tan cap · camera flash)
- Clue 1 (Addition): "THE SNEAKY VILLAIN DOES NOT USE BRAIDED LINE"7 + 2 = 9 (T) · 3 + 1 = 4 (O) · 3 + 9 = 12 (S) · 3 + 4 = 7 (N) · 2 + 6 = 8 (U) · 9 + 10 = 19 (H) · 10 + 5 = 15 (E) · 8 + 6 = 14 (A) · 4 + 7 = 11 (D) · 11 + 5 = 16 (K) · 5 + 8 = 13 (V) · 14 + 6 = 20 (B) · 4 + 2 = 6 (L) · 9 + 9 = 18 (Y) · 5 + 5 = 10 (I) · 5 + 12 = 17 (R)
- Clue 2 (Subtraction): "THE WITNESS SAW A LEFT HANDED CAST"11 - 8 = 3 (T) · 18 - 7 = 11 (A) · 18 - 8 = 10 (S) · 16 - 4 = 12 (E) · 18 - 2 = 16 (C) · 16 - 7 = 9 (F) · 7 - 3 = 4 (D) · 20 - 6 = 14 (L) · 11 - 3 = 8 (H) · 19 - 1 = 18 (W) · 3 - 2 = 1 (N) · 11 - 9 = 2 (I)
- Clue 3 (Skip counting): "THE ANGLER WAS BLINDED BY A CAMERA FLASH"Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (T) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (E) · Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18 = 12 (D) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (M) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, ___, 80, 90 = 70 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, ___, 25, 30 = 20 (H) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160 = 140 (R) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60 = 50 (A) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (S) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (Y) · Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60 = 40 (W) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (C) · Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (F) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (B) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (G) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (N) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (L)
- Clue 4 (Place value): "THE DETECTIVE FOUND A CAMO TAN CAP"What number has 1 ten and 1 one? = 11 (T) · What number has 8 tens and 7 ones? = 87 (V) · What number has 6 tens and 2 ones? = 62 (P) · What number has 4 tens and 7 ones? = 47 (U) · What number has 4 tens and 0 ones? = 40 (I) · What number has 4 tens and 6 ones? = 46 (O) · What number has 6 tens and 8 ones? = 68 (A) · What number has 4 tens and 3 ones? = 43 (E) · What number has 3 tens and 9 ones? = 39 (H) · What number has 3 tens and 8 ones? = 38 (D) · What number has 9 tens and 9 ones? = 99 (C) · What number has 3 tens and 1 one? = 31 (M) · What number has 5 tens and 1 one? = 51 (N) · What number has 2 tens and 4 ones? = 24 (F)
- Clue 5 (Missing addends): surviving statement (box 5) → Fisher Finn8 + ___ = 15 = 7 · 3 + ___ = 11 = 8 · 7 + ___ = 10 = 3 · 1 + ___ = 12 = 11 · 7 + ___ = 11 = 4 · 4 + ___ = 16 = 12 · 5 + ___ = 7 = 2 · 2 + ___ = 8 = 6 · 10 + ___ = 19 = 9 · 6 + ___ = 7 = 1 · 2 + ___ = 12 = 10
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 Bass Boat Mystery — set in Whispering Pines Lake
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects