🔎 Competitive figure skating cGrade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Case of the Frozen Trophy
Someone stole the Golden Skate Trophy right before the final skate-off! The head judge found icy tracks leading away from the display case. It is up to you to find the ice saboteur before the closing ceremony 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
| Name | Signature Move | Skate Gadget | Skater Type | Hair Style | Distraction |
|---|---|---|---|---|---|
| Ron | triple axel | turbo boosters | skater girl | braided bun | melted slush |
| Kai | hydroblade | music player guard | skater boy | spiky gel | melted slush |
| Meg | hydroblade | sparkler boots | skater girl | slicked ponytail | melted slush |
| Sam | flying sit spin | music player guard | skater boy | braided bun | loud cheering |
| Ava | triple axel | sparkler boots | skater boy | spiky gel | bright flashlights |
| Eli | flying sit spin | sparkler boots | skater girl | braided bun | melted slush |
| Mia | death spiral | laser lace ties | skater girl | spiky gel | loud cheering |
| Tim | death spiral | sparkler boots | skater boy | spiky gel | loud cheering |
| Max | hydroblade | turbo boosters | skater girl | braided bun | melted slush |
| Sue | death spiral | turbo boosters | skater girl | braided bun | melted slush |
| Ian | hydroblade | turbo boosters | skater girl | braided bun | bright flashlights |
| Roy | death spiral | laser lace ties | skater girl | slicked ponytail | bright flashlights |
| Joy | hydroblade | laser lace ties | skater girl | braided bun | melted slush |
| Ted | camel spin | laser lace ties | skater girl | spiky gel | melted slush |
| Fay | death spiral | sparkler boots | skater girl | braided bun | bright flashlights |
| Ben | triple axel | music player guard | skater boy | braided bun | loud cheering |
| Dan | triple axel | laser lace ties | skater girl | slicked ponytail | melted slush |
| Leo | camel spin | heated blades | skater girl | slicked ponytail | bright flashlights |
| Jax | hydroblade | heated blades | skater boy | spiky gel | melted slush |
| Amy | triple axel | turbo boosters | skater boy | braided bun | melted slush |
| Zoe | hydroblade | heated blades | skater boy | spiky gel | bright flashlights |
Clue 1
Rounding
The arena scoreboard flashed with a rounded number. We can round this up to find our 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
20
3000
2800
5000
280
500000
2000
T
20
2800
7000
4700
30
2000
2800
5000
28000
2000
T
20
7000
5000
2800
300000
280
5000
2800
4700
300000
280
300
2800
5000
Round 18 to the nearest tenT
Round 259 to the nearest hundredC
Round 28,421 to the nearest thousandN
Round 340,775 to the nearest hundred thousandL
Round 278 to the nearest tenA
Round 1,694 to the nearest thousandO
Round 2,586 to the nearest thousandH
Round 2,830 to the nearest hundredE
Round 5,123 to the nearest thousandS
Round 522,058 to the nearest hundred thousandB
Round 4,680 to the nearest hundredR
Round 34 to the nearest tenD
Round 6,611 to the nearest thousandU
0/13 letters found
Clue 2
Addition
We found two piles of shiny skate guards left by the rink. Let us add them together to decode the suspect's type.
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
8137
4310
7556
A
8137
5901
2930
3799
6894
2510
3799
4958
3495
A
8137
4310
4310
2930
2930
5872
A
8137
5901
5901
2137
2930
3799
2510
5872
7556
4310
2653 + 5484 =A
1743 + 2567 =S
2327 + 4567 =G
2448 + 2510 =L
3193 + 2708 =T
1441 + 1069 =I
1080 + 1057 =H
1508 + 1422 =E
1309 + 2186 =W
1945 + 1854 =R
2894 + 2978 =N
3796 + 3760 =K
0/12 letters found
Clue 3
Subtraction
The skater's routine was cut short. Subtract the lost seconds from the total time to unlock a secret about their hair.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
M
6398
6016
5169
6283
6016
2564
3582
5169
7595
3582
2830
M
6398
2721
3443
6016
3582
6283
2830
7901
3582
3582
3443
2721
6283
6016
1993
3582
5169
7901
7417
7607 - 1209 =M
6104 - 2661 =K
8514 - 919 =U
5924 - 3094 =H
4972 - 1390 =S
9115 - 3099 =E
5608 - 439 =L
2731 - 10 =A
11147 - 3246 =I
4616 - 2623 =R
8332 - 915 =P
4932 - 2368 =D
9021 - 2738 =T
0/13 letters found
Clue 4
Multiplication facts (1-12)
The equipment room has neat rows of skates. Multiply the skate boxes in each row to find the saboteur's weakness.
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
96
64
55
14
2
84
77
88
70
49
88
11
77
64
77
70
2
84
8
88
11
49
27
11
84
12 × 8 =W
7 × 7 =R
9 × 3 =P
8 × 11 =A
8 × 8 =E
11 × 7 =D
12 × 7 =N
11 × 5 =F
2 × 1 =U
1 × 8 =H
11 × 1 =I
2 × 7 =O
7 × 10 =B
0/13 letters found
Clue 5
Division facts (1-12) — the last clue
We need to share the extra participation ribbons equally among the skating teams. Divide them up to reveal the final hint.
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 ÷ 1 = ?
48 ÷ 4 = ?
24 ÷ 6 = ?
49 ÷ 7 = ?
11 ÷ 1 = ?
24 ÷ 4 = ?
36 ÷ 4 = ?
10 ÷ 10 = ?
10 ÷ 5 = ?
15 ÷ 5 = ?
60 ÷ 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain drops into a flying sit spin, then melts the ice with heated blades.
2.The villain leaps into a triple axel, then blinds the crowd with sparkler boots.
3.The villain carves a deep death spiral, then blasts loud tunes from a music player guard.
4.The villain drops into a flying sit spin, then blinds the crowd with sparkler boots.
5.The villain leaps into a triple axel, then zaps the scoreboard with laser lace ties.
6.The villain carves a deep death spiral, then zaps the scoreboard with laser lace ties.
7.The villain leaps into a triple axel, then blasts loud tunes from a music player guard.
8.The villain carves a deep death spiral, then zooms away on turbo boosters.
9.The villain drops into a flying sit spin, then zaps the scoreboard with laser lace ties.
10.The villain leaps into a triple axel, then zooms away on turbo boosters.
11.The villain carves a deep death spiral, then blinds the crowd with sparkler boots.
12.The villain leans low in a hydroblade, then zooms away on turbo boosters.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Frozen Trophy
Culprit: Ron (triple axel · turbo boosters · skater girl · braided bun · melted slush)
- Clue 1 (Rounding): "THE SABOTEUR DOES NOT USE LASER LACES"Round 18 to the nearest ten = 20 (T) · Round 259 to the nearest hundred = 300 (C) · Round 28,421 to the nearest thousand = 28000 (N) · Round 340,775 to the nearest hundred thousand = 300000 (L) · Round 278 to the nearest ten = 280 (A) · Round 1,694 to the nearest thousand = 2000 (O) · Round 2,586 to the nearest thousand = 3000 (H) · Round 2,830 to the nearest hundred = 2800 (E) · Round 5,123 to the nearest thousand = 5000 (S) · Round 522,058 to the nearest hundred thousand = 500000 (B) · Round 4,680 to the nearest hundred = 4700 (R) · Round 34 to the nearest ten = 30 (D) · Round 6,611 to the nearest thousand = 7000 (U)
- Clue 2 (Addition): "A SKATER GIRL WAS SEEN AT THE RINKS"2653 + 5484 = 8137 (A) · 1743 + 2567 = 4310 (S) · 2327 + 4567 = 6894 (G) · 2448 + 2510 = 4958 (L) · 3193 + 2708 = 5901 (T) · 1441 + 1069 = 2510 (I) · 1080 + 1057 = 2137 (H) · 1508 + 1422 = 2930 (E) · 1309 + 2186 = 3495 (W) · 1945 + 1854 = 3799 (R) · 2894 + 2978 = 5872 (N) · 3796 + 3760 = 7556 (K)
- Clue 3 (Subtraction): "MELTED SLUSH MAKES THIS SKATER SLIP"7607 - 1209 = 6398 (M) · 6104 - 2661 = 3443 (K) · 8514 - 919 = 7595 (U) · 5924 - 3094 = 2830 (H) · 4972 - 1390 = 3582 (S) · 9115 - 3099 = 6016 (E) · 5608 - 439 = 5169 (L) · 2731 - 10 = 2721 (A) · 11147 - 3246 = 7901 (I) · 4616 - 2623 = 1993 (R) · 8332 - 915 = 7417 (P) · 4932 - 2368 = 2564 (D) · 9021 - 2738 = 6283 (T)
- Clue 4 (Multiplication facts (1-12)): "WE FOUND A BRAIDED BUN HAIRPIN"12 × 8 = 96 (W) · 7 × 7 = 49 (R) · 9 × 3 = 27 (P) · 8 × 11 = 88 (A) · 8 × 8 = 64 (E) · 11 × 7 = 77 (D) · 12 × 7 = 84 (N) · 11 × 5 = 55 (F) · 2 × 1 = 2 (U) · 1 × 8 = 8 (H) · 11 × 1 = 11 (I) · 2 × 7 = 14 (O) · 7 × 10 = 70 (B)
- Clue 5 (Division facts (1-12)): surviving statement (box 10) → Ron8 ÷ 1 = 8 · 48 ÷ 4 = 12 · 24 ÷ 6 = 4 · 49 ÷ 7 = 7 · 11 ÷ 1 = 11 · 24 ÷ 4 = 6 · 36 ÷ 4 = 9 · 10 ÷ 10 = 1 · 10 ÷ 5 = 2 · 15 ÷ 5 = 3 · 60 ÷ 12 = 5
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Case of the Frozen Trophy — set in Frosty Peaks Ice Arena
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects