Easy 2-3 digits
Medium 3-5 digits
Binary adding
Binary subtraction
Trivia + Binary multiplication
100

What is 10 in decimal?

2

100

What is 10001 in decimal?

17

100

101 + 101

1010

100

1001 - 110

3

100

What two numbers are used in Binary?

1 and 0

200

What is 101 in decimal?

5

200

What is 1010 in decimal?

10

200

1001 + 11

1110

200

1111 - 111

8

200

What is binary usually used for?

Commputers

300

What is 11 in decimal?

3

300

What is 11101 in decimal?

29

300

1000 + 1010

18

300

1101 - 1001

4

300

101 x 101?

25

400

What is 110 in decimal?

6

400

What is 10110 in decimal?

22

400

110 + 1 +  110 + 10

15

400

11111 - 1010

21

400

111 x 111 

49

500

What is 111 in decimal?

7

500

What is 11111 in decimal?

31

500

111 + 111 +101 + 111

26

500

10111 - 1101

10

500

1000 x 1001

72