Question

Thực hiện phép tính

a) 39.47 – 39.17

b) 12.53 + 53.172 – 53.84

c) 53.27 – 53.17

d) 33.59 + 59.151 – 59.84

e) 29.63 – 29.13

f) 91.2018 – 45.2018 – 46.2018

Answer 1

a, 39.47 – 39.17

= 39.(47 – 17)

= 39.30

= 1170

b, 12.53 + 53.172 – 53.84

= 53.(12+172 – 84)

= 53.100

= 5300

c, 53.27 – 53.17

= 53.(27 – 17)

= 53.10

= 530

d, 33.59 + 59.151 – 59.84

= 59.(33 + 151 – 84)

= 59.100

= 5900

e, 29.63 – 29.13

= 29.(63 – 13)

= 29.50

= 1450

f, 91.2018 – 45.2018 – 46.2018

= 2018.(91 – 45 – 46)

= 2018.0

= 0