Binary Abacus

Dividing Line


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Click on the beads to slide them left or right. Work in base

1
Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead
0
2
Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead
0
4
Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead
0
8
Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead Blue bead
0
16
Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead Yellow bead
0
32
Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead Red bead
0
64
Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead Brown bead
0
128
Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead Green bead
0
0


DoIT

Use the abacus to convert these binary numbers to denary.


1) 10101001

169

2) 00110010

50

3) 00111000

56

4) 11101110

238

5) 11100001

225

6) 00101101

45

7) 00011000

24

8) 11010110

214

9) 01110010

114

10) 10000011

131

11) 00010111

23

12) 11110100

244

13) 01000010

66

14) 11100110

230

15) 01011001

89

16) 01111101

125


DoIT

Use the abacus to convert these denary numbers to binary.


1) 250

11111010

2) 125

01111101

3) 64

01000000

4) 17

00010001

5) 9

00001001

6) 134

10000110

7)  88

01011000

8) 32

00100000

9) 12

00001100

10)  180

10101010

11) 3

00000011

12) 77

01001101

13) 19

00010010

14) 222

01110101

15) 117

00100100

16) 36

00100100

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Last modified: Saturday, 9 October 2021, 12:44 PM