Perform the following calculations:

a) -4 - 13,

b) -7 + 19,

c) 8 - (-5),

d) 2 + (-11).

Write the first three terms of a sequence where the first term is 4 and

the term-to-term rule is

'Multiply by 3 and subtract 2'.

List all factors of 36.

Write each improper fraction as a mixed number or decimal:

a) 17/5,

b) 23/9.

Convert the following:

a) 0.75 km to meters,

b) 250 cm to meters,

c) 5600 g to kilograms.

Arrange these numbers in ascending order: 5.43, 3.78, 6.91, 7.04.

Calculate:

a) √64,

b) 3³,

c) 5² + √49.

Round the following:

a) 46.732 to two decimal places,

b) 3921 to the nearest hundred.

Perform the following operations and simplify:

a) 3/4 + 5/8,

b) 7/9 - 2/3.

Evaluate:

a) 4.8 × 100,

b) 0.056 ÷ 1000,

c) 3.5 × 10.