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# Properties of Operations – 1st Grade

Watch first

Here are objects that are found inside Merlin’s cave. Be safe as you move around inside the 360 VR tour. Go below to fix Number One’s mistake.

# A

If the answer is  “A  find the number on or around this object.

# B

If the answer is  “B  find the number on or around this object.

# C

If the answer is  “C  find the number on or around this object.

# D

If the answer is  “D  find the number on or around this object.

Start!

You may want a piece of paper to solve problems.

Question #1

If 8 + 3 = 11, then _ + 8 = 11

A)  5                     B)  4

C)  3                     D)  8

A)   Dragon

B)   Book Stand

C)   Metal Shape

D)   Magic Staff

Question #2

If 2 + 5 = 7, then _ + 2 = 7

A)  9                   B)  5

C)  4                   D)  3

A)   Large Vase

B)   Mini Table

C)   Telescope

D)   Astronomy Tool

Type the numbers from the objects to get your first clue. Write the clues down as you will need all of them to unlock the master lock.

Clue Box

Question #3

If 4 – 1 = 3, then 4 – 3 =

A)  2                  B)  4

C)  1                  D)  3

A)   Spell Book

B)   Magic Staff

C)   Hourglass

D)   Dragon

Question #4

2 + 8 + 2 = 12 is the same as 10 + _ = 12

A)  3                   B)  4

C)  5                   D)  2

A)   Fire Vase

B)   Metal Shape

C)   Large Vase

D)   Telescope

Type in the numbers to get your clue.

Clue Box

Question #5

7 + 3 + 5 = 15 is the same as 10 + _ = 15

A)  4                     B)  6

C)  3                     D)  5

A)   Hourglass

B)   Astronomy Tool

C)   Star Rock

D)   Spell Book

Type in the numbers to get your clue.

Clue Box

Input all the clues to help Merlin fix the mess.

MASTER LOCK

Did you fix the dragon problem?

Share your results with your teacher and parents. Tell them what the Master Lock was and where the key was found.