M - doubling and halving

Half of me is 6 and double me is 24.

What number am I?

• 20

• 12

• 40

• 10

Half of me is 2 and double me is 8.

What number am I?

• 2

• 4

• 5

• 10

Double me is 100 and half of me is 25.

What number am I?

• 25

• 30

• 40

• 50

Half of me is 1 and double me is 4.

What number am I?

• 4

• 8

• 6

• 2

Double me is 32, half of me is 8.

What number am I?

• 14

• 16

• 18

• 20

Half of me is 20 and double me is 80.

What number am I?

• 30

• 40

• 50

• 60

Double me is 16, half of me is 4.

What number am I?

• 5

• 7

• 8

• 8

Sarah has 16 marbles. She gives half to Tom.

How many does Sarah have left?

• 7

• 13

• 8

• 10

I had 13 stickers on Monday. By Friday, I had double.

How many stickers did I have on Friday?

• 15

• 22

• 25

• 26

I had $44 and spent half of it.

How much have I got left?

• 28

• 13

• 22

• 9