MATHS [3 marks sum]

36 – 18.59 – 3.2
= 36 - (18.59 + 3.2)
= 36 - (21.79) = 14.21
18.59
+ 3.20
21.79
36.00
- 21.79
14.21

93.354 – 62.82 – 13.045
= 93.354 - (62.82 + 13.045)
= 93.354 - 75.865 = 17.489
62.820
+ 13.045
75.865
93.354
- 75.865
17.489

28.796 -13.42 – 2.555
= 28.796 - (13.42 - 2.555)
= 28.796 - 15.975 = 12.821
13.420
+ 2.555
15.975
28.796
- 15.975
12.821

879.4 – (87.94 – 8 .794)
= 879.4 - 79.146 = 800.254
87.940
+ 8.794
79.146
879.400
- 79.146
800.254

(6.25 + 0.36) -(17.2 – 8.97)
= 6.61 - 8.23 = - 1.62
6.25
+ 0.36
6.61
17.20
- 8.97
8.23
8.23
- 6.61
- 1.62

215.78, 33.0006, 530.3 and 0.03569
In these decimals, the greatest places of decimal is 5
∴215.78 = 215.78000
33.0006 = 33.00060
530.3 = 530.30000
0.03569 = 0.03569