Question

Bài 2. Tính nhanh :
a) 12 – ( 12 – 9,36 )

b) 72,64 – 18,35 – 9,29

c) ( 10 – 9,34 ) + ( 10 + 9,66 )

d) 45,83 – 8,46 – 6, 54 + 4,17

Answer 1

a) =9,46
b) =45
c) =20,32
d) =34,9
 

Answer 2

Bài 2. Tính nhanh :
a) 12 – ( 12 – 9,36 )

= 12 - 2,64

= 9,36

b) 72,64 – 18,35 – 9,29

= 54,29 - 9,29

= 45

c) ( 10 – 9,34 ) + ( 10 + 9,66 )

= 0.66 + 19,66

= 20,32

d) 45,83 – 8,46 – 6, 54 + 4,17

= 37,37 - 10,71

= 26,66