Question

[Pham Trong Bach]

Tính bằng cách thuận tiện nhất:
a) 22,56 – 7,59 – 8,41     b) 53,48 – 19,84 – 22,16

Answer 1

[Cao Minh Tâm]

a) 22,56 – 7,59 – 8,41	b) 53,48 – 19,84 – 22,16
= 22,56 – (7,59 + 8,41)	= 53,48 – (19,84 + 22,16)
= 22,56 – 16	= 53,48 – 42
= 6,56.	= 11,48.

Answer 2

[Lê Quốc Bảo]

a) 22,56 – 7,59 – 8,41	b) 53,48 – 19,84 – 22,16
= 22,56 – (7,59 + 8,41)	= 53,48 – (19,84 + 22,16)
= 22,56 – 16	= 53,48 – 42
= 6,56.	= 11,48.