Junior Mathematics

Convert the decimal number 25 to binary.

• 11001

• 10101

• 10011

• 11100

Convert the binary number 10110 to decimal.

• 20

• 22

• 18

• 16

Answer explanation

What is 1011₂ + 110₂ in binary?

• 10001₂

• 1111₂

• 10101₂

• 1100₂

Convert 3F₁₆ (hexadecimal) to decimal.

• 63

• 47

• 56

• 72

What is (-6) × (-5) + (-3)?

• 27

• 30

• 33

• -3

What is 1010₂ × 11₂ in binary?

• 10110₂

• 11110₂

• 11010₂

• 100110₂

Solve: (-7) + 4

• -11

• -3

• 3

• 11

Find the value of (-12) ÷ (3) + (-2) × 4

• -12

• -6

• -4

• 6

Simplify: (-8) - (-5) + (-3) × 2

• -7

• -3

• -6

• -9

If x = -2, evaluate 5x + 4

• -6

• -10

• -4

• 6