Tutorial Arithmetic

1.Solve

a.-4 + -4

b.-4 - -2

c.-4 x -2

d.-4 -2

e.-16 x -6

f.-81 -9

2.Correct each of the following to the number of decimal places(dp) or significant figures(sf) indicated.

a.2.643 (2 dp)

b.1.338 (2 dp)

c.17.64 (1 dp)

d.7.5474 (2 sf)

e.17.6 (1 sf)

f.0.00587 (1 sf)

3.Express each of the following as a percentage (to no more than 1 dp)

a.RM5 out of RM24

b.4 kg out of 32 kg

c.2.5m out of 10m

d.40cm out of 3m.

4.a. Divide RM3.25 in the ratio of 2:3

5.Three footballers score 21, 15 and 9 goals respectively. Their club pays out $9,000 in bonus money to these players. They share the bonus in the same ratio as the goals they score. Calculate the share of bonus for each player.

6.Divide 10,472 items between four people, - A, B, C and D in the proportions: 9:9:1:3. How many items do B and D get?

a.B =

b.D =

7.Express 38.354% as a decimal.

8.Express 0.71992 as percent.

9.Express 3 11/19 as a decimal.