Math Mysteries
🔎 EVERYTHINGGrade 1Reading: grades 1-2AdditionSubtractionMultiplicationRoundingDivision

The Mystery of the Everything Toy

Someone took the Golden Gizmo from the giant toy shelf! This magical toy can change into anything. Shopkeeper Barnaby needs your help to find the sneaky thief before they turn the shop into jelly!

Suspects

Possible suspects

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

21 of 21 still in play
NameMagic TrickSpecial EffectShoe ColorWig ColorSecret Weakness
MaxSize ChangeSpark SparkleRed ShoesYellow WigSilly Songs
KimRobo FlightGlow ShineRed ShoesGreen WigSilly Songs
SkyRobo FlightWind WhistleRed ShoesGreen WigTickle Feathers
SamRobo FlightMusic PlayBlue ShoesGreen WigTickle Feathers
GusSize ChangeMusic PlayRed ShoesYellow WigSilly Songs
AmyRobo FlightWind WhistleRed ShoesGreen WigBright Lights
TedSize ChangeBubble BlowRed ShoesYellow WigBright Lights
EliSuper BounceGlow ShineBlue ShoesYellow WigBright Lights
DotIce FreezeBubble BlowBlue ShoesGreen WigSilly Songs
KaiIce FreezeSpark SparkleRed ShoesYellow WigTickle Feathers
NedSize ChangeBubble BlowRed ShoesGreen WigSilly Songs
RoyIce FreezeBubble BlowRed ShoesYellow WigBright Lights
RexIce FreezeWind WhistleRed ShoesYellow WigTickle Feathers
MiaRobo FlightSpark SparkleRed ShoesYellow WigBright Lights
BenLaser BlastWind WhistleRed ShoesYellow WigBright Lights
ZoeLaser BlastWind WhistleRed ShoesPurple WigSilly Songs
DanRobo FlightSpark SparkleBlue ShoesPurple WigTickle Feathers
PipSize ChangeSpark SparkleRed ShoesYellow WigBright Lights
AvaSize ChangeBubble BlowRed ShoesGreen WigBright Lights
MegRobo FlightSpark SparkleRed ShoesPurple WigBright Lights
JoyRobo FlightBubble BlowBlue ShoesYellow WigBright Lights
Clue 1

Addition

The thief knocked down two stacks of building blocks. Let us add them together to see the total mess they made.

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
6
5
T
11
6
2
5
17
7
3
5
15
16
3
T
11
6
9
19
5
18
2
16
7
18
6
2
15
T
11
8
5
8 + 3 =T
3 + 5 =L
11 + 6 =F
2 + 1 =O
9 + 10 =V
5 + 2 =D
1 + 1 =I
11 + 5 =N
3 + 2 =E
2 + 7 =A
5 + 13 =W
7 + 8 =S
2 + 4 =H
0/13 letters found
Clue 2

Subtraction

The thief dropped some shiny star stickers on the rug. We had ten but now some are gone. Let us subtract to find the missing ones.

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
15
5
6
T
15
5
8
6
17
8
16
14
6
1
10
8
12
9
10
6
18
16
5
7
6
16
20 - 5 =T
14 - 4 =R
13 - 6 =O
19 - 1 =D
17 - 5 =N
17 - 1 =S
8 - 2 =E
20 - 6 =W
20 - 3 =F
9 - 1 =I
4 - 3 =A
16 - 7 =G
7 - 2 =H
0/13 letters found
Clue 3

Multiplication facts (1-12)

Look at these neat rows of toy cars left behind! We can multiply the rows to count them up very quickly.

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
14
90
10
55
70
1
7
1
81
1
55
4
70
16
21
T
14
90
10
12
70
3
6
90
T
14
36
3
6
90
T
14
45
2 × 7 =T
3 × 1 =I
7 × 1 =N
5 × 11 =Y
9 × 4 =L
10 × 7 =R
10 × 1 =E
4 × 3 =B
9 × 5 =S
10 × 9 =H
3 × 7 =M
1 × 4 =F
4 × 4 =O
1 × 1 =A
9 × 9 =W
6 × 1 =G
0/16 letters found
Clue 4

Rounding

The toy scale is a bit broken today. It only shows the weight of the thief's footprint rounded 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
90
800
20
600
30
80
50
60
300
800
200
200
600
W
90
500
900
400
60
80
50
600
20
40
60
700
400
Round 90 to the nearest tenW
Round 900 to the nearest hundredT
Round 800 to the nearest hundredE
Round 19 to the nearest tenF
Round 372 to the nearest hundredR
Round 38 to the nearest tenH
Round 698 to the nearest hundredI
Round 274 to the nearest hundredY
Round 31 to the nearest tenU
Round 498 to the nearest hundredS
Round 642 to the nearest hundredO
Round 76 to the nearest tenN
Round 59 to the nearest tenA
Round 195 to the nearest hundredL
Round 48 to the nearest tenD
0/15 letters found
Clue 5

Division facts (1-12) — the last clue

We need to share these yummy space cookies equally among the helper robots so they have enough energy to clean up.

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
120 ÷ 10 = ?
14 ÷ 7 = ?
56 ÷ 7 = ?
30 ÷ 6 = ?
110 ÷ 11 = ?
9 ÷ 3 = ?
6 ÷ 1 = ?
11 ÷ 1 = ?
8 ÷ 8 = ?
108 ÷ 12 = ?
48 ÷ 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain shrank down to fit through the keyhole, then played a happy tune on a tiny horn.
2.The villain flew up to the high ceiling, then shot colorful sparks into the air.
3.The villain flew up to the high ceiling, then blew a cloud of sticky bubbles.
4.The villain bounced high over the counter, then whistled a very loud song.
5.The villain bounced high over the counter, then blew a cloud of sticky bubbles.
6.The villain froze the door with a blast of ice, then played a happy tune on a tiny horn.
7.The villain froze the door with a blast of ice, then blew a cloud of sticky bubbles.
8.The villain shrank down to fit through the keyhole, then shot colorful sparks into the air.
9.The villain shrank down to fit through the keyhole, then whistled a very loud song.
10.The villain bounced high over the counter, then glowed brightly in the dark shop.
11.The villain zapped the locked shelf with a laser blast, then shot colorful sparks into the air.
12.The villain shrank down to fit through the keyhole, then blew a cloud of sticky bubbles.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 1 math
Math topics
Addition, Subtraction, Multiplication, Rounding, Division
Reading level
grades 1-2
Theme
The Mystery of the Everything Toy — set in The Everything Emporium
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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