🔎 FishingGrade 4Reading: grades 3-4AdditionRoundingSubtractionMultiplicationDivision
The Mystery of the Golden Trophy Lure
The annual Lake Shadowfin Bass Derby was about to start when someone snatched the priceless Golden Trophy Lure right off the judge's table! Without the trophy lure, the tournament cannot begin. Detective Maya arrived at the marina to inspect the docks and narrow down the suspect list before the culprit reels away.
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 Bait | Fishing Rod Type | Reel Hand | Hat Style | Unlucky Snag |
|---|---|---|---|---|---|
| Gill Waters | Plastic Worms | Telescopic Rod | Right Handed Reel | Green Bucket Hat | Overhanging Willow |
| Rex Tackle | Corn Kernels | Graphite Rod | Right Handed Reel | Green Bucket Hat | Sunken Log |
| Bass Brody | Nightcrawlers | Bamboo Pole | Left Handed Reel | Blue Sun Visor | Sunken Log |
| Trout Trevor | Shiny Spoons | Fly Fishing Rod | Left Handed Reel | Blue Sun Visor | Lakeside Reeds |
| Wade Rivers | Corn Kernels | Telescopic Rod | Left Handed Reel | Red Cap | Lakeside Reeds |
| Hooker Hayes | Nightcrawlers | Fiberglass Rod | Left Handed Reel | Green Bucket Hat | Lakeside Reeds |
| Pearl Diver | Nightcrawlers | Fiberglass Rod | Left Handed Reel | Blue Sun Visor | Lakeside Reeds |
| Caster Vance | Plastic Worms | Fiberglass Rod | Left Handed Reel | Blue Sun Visor | Lakeside Reeds |
| Bait Bailey | Shiny Spoons | Telescopic Rod | Left Handed Reel | Blue Sun Visor | Lakeside Reeds |
| Finley Hook | Plastic Worms | Fiberglass Rod | Right Handed Reel | Green Bucket Hat | Lakeside Reeds |
| Sandy Shore | Shiny Spoons | Fly Fishing Rod | Right Handed Reel | Green Bucket Hat | Sunken Log |
| Hunter Bobber | Minnows | Graphite Rod | Right Handed Reel | Blue Sun Visor | Lakeside Reeds |
| Ray Anchor | Nightcrawlers | Fly Fishing Rod | Left Handed Reel | Blue Sun Visor | Lakeside Reeds |
| Marina Pike | Corn Kernels | Fly Fishing Rod | Left Handed Reel | Green Bucket Hat | Sunken Log |
| Trout Tanner | Corn Kernels | Graphite Rod | Left Handed Reel | Blue Sun Visor | Lakeside Reeds |
| Fisher King | Shiny Spoons | Bamboo Pole | Right Handed Reel | Blue Sun Visor | Overhanging Willow |
| Pike Parker | Corn Kernels | Fly Fishing Rod | Left Handed Reel | Blue Sun Visor | Overhanging Willow |
| Lake Skylar | Plastic Worms | Fly Fishing Rod | Right Handed Reel | Blue Sun Visor | Lakeside Reeds |
| Sunny Cast | Minnows | Bamboo Pole | Right Handed Reel | Green Bucket Hat | Sunken Log |
| Reed Marsh | Plastic Worms | Graphite Rod | Right Handed Reel | Red Cap | Lakeside Reeds |
| Salmon Sam | Nightcrawlers | Graphite Rod | Left Handed Reel | Green Bucket Hat | Sunken Log |
Clue 1
Addition
Judge Miller tallies up the extra fishing tackle left behind at the bait shop.
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
2975
7752
5626
T
2975
7752
7039
5626
9830
7686
7039
7686
8157
7698
T
2975
5405
3639
5626
3293
9830
7039
5474
5626
4735
4424
3359
3293
3639
3639
4735
7698
7686
1647 + 1328 =T
2877 + 4809 =D
3205 + 2421 =E
1151 + 2208 =L
4211 + 5619 =F
4409 + 2630 =I
1920 + 2815 =R
3385 + 4367 =H
1677 + 2747 =G
3421 + 4277 =O
2121 + 1172 =A
2198 + 3207 =U
3625 + 4532 =N
2738 + 2736 =B
2187 + 1452 =S
0/15 letters found
Clue 2
Rounding
The electronic fish finder screen rounds the weight of the catch to the nearest ten.
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
370
4300
30
20
3700
3000
3000
3000
5000
W
370
5000
70
3700
2300
30
1300
5000
20
9000
3700
9000
290
3700
3700
70
4300
20
1700
3000
3700
Round 368 to the nearest tenW
Round 1,728 to the nearest hundredU
Round 294 to the nearest tenR
Round 3,665 to the nearest hundredE
Round 5,496 to the nearest thousandA
Round 1,332 to the nearest hundredH
Round 66 to the nearest tenL
Round 2,871 to the nearest thousandS
Round 30 to the nearest tenT
Round 20 to the nearest tenN
Round 4,339 to the nearest hundredI
Round 2,325 to the nearest hundredF
Round 9,271 to the nearest thousandD
0/13 letters found
Clue 3
Subtraction
Detective Maya counts how many lures remain in the tackle box after the theft.
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
5136
5350
5625
3552
1490
3082
5625
3205
8434
3842
1100
5350
T
5136
1490
3082
3552
8434
1452
5625
7264
1490
7249
5625
7268
5625
5625
7249
7264
9671 - 4535 =T
4980 - 3490 =I
10078 - 1644 =A
11229 - 3980 =D
1803 - 703 =G
7665 - 3823 =U
4625 - 1420 =C
9229 - 3879 =H
7336 - 4254 =N
10611 - 3347 =S
10321 - 4696 =E
9870 - 2602 =R
6281 - 2729 =L
1720 - 268 =K
0/14 letters found
Clue 4
Multiplication facts (1-12)
The dock master counts equal rows of fishing rods lined up along the pier.
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
60
33
27
120
16
88
120
25
3
55
88
81
9
22
A
60
88
100
81
120
25
90
25
16
A
60
9
9
16
16
27
10 × 6 =A
8 × 2 =E
9 × 9 =O
3 × 1 =V
9 × 3 =L
5 × 5 =N
2 × 11 =W
11 × 3 =B
11 × 5 =I
12 × 10 =U
8 × 11 =S
10 × 10 =F
9 × 1 =R
9 × 10 =D
0/14 letters found
Clue 5
Division facts (1-12) — the last clue
The young anglers split the recovered lead sinkers equally among their buckets.
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
33 ÷ 11 = ?
36 ÷ 4 = ?
24 ÷ 12 = ?
11 ÷ 1 = ?
64 ÷ 8 = ?
60 ÷ 12 = ?
60 ÷ 5 = ?
60 ÷ 10 = ?
7 ÷ 7 = ?
21 ÷ 3 = ?
10 ÷ 1 = ?
Step 2 — cross out the sentence with each answer
1.The villain trolled with shiny spoons, then snapped a bamboo pole.
2.The villain chummed with corn kernels, then flexed a graphite rod.
3.The villain hooked with nightcrawlers, then waved a fly fishing rod.
4.The villain trolled with shiny spoons, then packed a telescopic rod.
5.The villain cast with minnows, then packed a telescopic rod.
6.The villain hooked with nightcrawlers, then packed a telescopic rod.
7.The villain baited with plastic worms, then packed a telescopic rod.
8.The villain hooked with nightcrawlers, then snapped a bamboo pole.
9.The villain trolled with shiny spoons, then waved a fly fishing rod.
10.The villain hooked with nightcrawlers, then flexed a graphite rod.
11.The villain baited with plastic worms, then flexed a graphite rod.
12.The villain cast with minnows, then waved a fly fishing rod.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Golden Trophy Lure
Culprit: Bait Bailey (Shiny Spoons · Telescopic Rod · Left Handed Reel · Blue Sun Visor · Lakeside Reeds)
- Clue 1 (Addition): "THE THIEF DID NOT USE A FIBERGLASS ROD"1647 + 1328 = 2975 (T) · 2877 + 4809 = 7686 (D) · 3205 + 2421 = 5626 (E) · 1151 + 2208 = 3359 (L) · 4211 + 5619 = 9830 (F) · 4409 + 2630 = 7039 (I) · 1920 + 2815 = 4735 (R) · 3385 + 4367 = 7752 (H) · 1677 + 2747 = 4424 (G) · 3421 + 4277 = 7698 (O) · 2121 + 1172 = 3293 (A) · 2198 + 3207 = 5405 (U) · 3625 + 4532 = 8157 (N) · 2738 + 2736 = 5474 (B) · 2187 + 1452 = 3639 (S)
- Clue 2 (Rounding): "WITNESS SAW A LEFT HANDED REEL IN USE"Round 368 to the nearest ten = 370 (W) · Round 1,728 to the nearest hundred = 1700 (U) · Round 294 to the nearest ten = 290 (R) · Round 3,665 to the nearest hundred = 3700 (E) · Round 5,496 to the nearest thousand = 5000 (A) · Round 1,332 to the nearest hundred = 1300 (H) · Round 66 to the nearest ten = 70 (L) · Round 2,871 to the nearest thousand = 3000 (S) · Round 30 to the nearest ten = 30 (T) · Round 20 to the nearest ten = 20 (N) · Round 4,339 to the nearest hundred = 4300 (I) · Round 2,325 to the nearest hundred = 2300 (F) · Round 9,271 to the nearest thousand = 9000 (D)
- Clue 3 (Subtraction): "THE LINE CAUGHT IN LAKESIDE REEDS"9671 - 4535 = 5136 (T) · 4980 - 3490 = 1490 (I) · 10078 - 1644 = 8434 (A) · 11229 - 3980 = 7249 (D) · 1803 - 703 = 1100 (G) · 7665 - 3823 = 3842 (U) · 4625 - 1420 = 3205 (C) · 9229 - 3879 = 5350 (H) · 7336 - 4254 = 3082 (N) · 10611 - 3347 = 7264 (S) · 10321 - 4696 = 5625 (E) · 9870 - 2602 = 7268 (R) · 6281 - 2729 = 3552 (L) · 1720 - 268 = 1452 (K)
- Clue 4 (Multiplication facts (1-12)): "A BLUE SUN VISOR WAS FOUND NEAR REEL"10 × 6 = 60 (A) · 8 × 2 = 16 (E) · 9 × 9 = 81 (O) · 3 × 1 = 3 (V) · 9 × 3 = 27 (L) · 5 × 5 = 25 (N) · 2 × 11 = 22 (W) · 11 × 3 = 33 (B) · 11 × 5 = 55 (I) · 12 × 10 = 120 (U) · 8 × 11 = 88 (S) · 10 × 10 = 100 (F) · 9 × 1 = 9 (R) · 9 × 10 = 90 (D)
- Clue 5 (Division facts (1-12)): surviving statement (box 4) → Bait Bailey33 ÷ 11 = 3 · 36 ÷ 4 = 9 · 24 ÷ 12 = 2 · 11 ÷ 1 = 11 · 64 ÷ 8 = 8 · 60 ÷ 12 = 5 · 60 ÷ 5 = 12 · 60 ÷ 10 = 6 · 7 ÷ 7 = 1 · 21 ÷ 3 = 7 · 10 ÷ 1 = 10
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Addition, Rounding, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Mystery of the Golden Trophy Lure — set in Lake Shadowfin
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects