> 9^th grade

Rules for the exercise

1/2

Please, look at your solution again. Is everything filled correctly?

Binary system

Mix

Instructions:

Convert the given number from a decimal number system to a binary system or vice versa.

Convert number 21 from decimal system to binary system.

Your answer:

(21)₁₀ = ()₂

Rules for the exercise:

Binary system

(28)₁₀ = (X)₂=> X = _____?

28 / 2 = 14 (+0) => X = ____0

14 / 2 = 7 (+0) => X = ___00

7 / 2 = 3 (+1) => X = __100

3 / 2 = 1 (+1) => X = _1100

1 / 2 = 0 (+1) => X = 11100

(11100)₂ = (X)₁₀=> X = __?

X = 1 * 16 + 1 * 8 + 1 * 4 + 0 * 2 + 0 * 1

X = 28