Brain Teasers

There are 5 apples and you take 3. How many apples do you have?

• 5

• 3

• 2

• 0

Tags

CCSS.2.OA.A.1

What is heavier 100kg of gold or 100 kg of feathers?

• gold

• feathers

• they are both the same

• What if the scale is incorrect?

Tags

CCSS.3.MD.A.2

There are 10 lit candles on a cake, you blow out 3. How many candles are on the cake?

• 10

• 3

• 7

• 13

Tags

CCSS.1.OA.A.1

How much dirt is there in a hole that measures two feet by three feet by four feet?

• 24 ft³
• 20 ft³
• 0 ft³
• 12 ft³

Tags

CCSS.5.MD.C.3A

CCSS.5.MD.C.3B

CCSS.5.MD.C.4

Using only addition, how do you add eight 8's and get the number 1000 ?

• 888 + 88 + 8 + 8 + 8

• 88 + 88+ 88+ 88+ 88+ 88+ 88+ 88+

• 88 + 888 + 88

A farmer has 17 sheep and all but nine die. How many are left? (10 seconds)

• 8

• 7

• 9

• 17

Tags

CCSS.2.OA.A.1

In a year, there are 12 months. Seven months have 31 days. How many months have 28 days? (20 seconds)

• 1

• 8

• 12

• 6

Tags

CCSS.3.MD.A.1

Jimmy’s mother had four children. She named the first Monday. She named the second Tuesday, and she named the third Wednesday. What is the name of the fourth child?

(10 seconds)

• Thursday

• Friday

• Jimmy

• Jim

• Bob

A family lives in a large tower apartment building, 10 floors high. Every day their son takes the elevator from the family’s apartment on the 10th floor to the ground floor and goes to school. When he returns in the afternoon, he uses the elevator to get to the fifth floor, and then uses the stairs for the remaining five floors. Why? (1 minute)

• Because it broke

• Because it is his favorite number

• Because he wanted a workout

• Because he could only reach 5

When I was 6 years old, my sister was half my age. Now I am 50 years old.

How old is my sister now?

• 25

• 3

• 47

Tags

CCSS.3.OA.A.3