Question

请你很快算出得数．

3×13=	80-54=	17÷2=	700+600=	0×36=
200×4=	0+231=	71×2≈	198×5≈	1- 3 9 =
2 3 + 1 3 =	3 8 - 2 8	7 9 - 7 9 =	4 7 + 3 7 =	1- 1 2 =

Answer 1

3×13=39	80-54=26	17÷2=8…1	700+600=1300	0×36=0
200×4=800	0+231=231	71×2≈140	198×5≈1000	1- 3 9 = 2 3
2 3 + 1 3 =1	3 8 - 2 8 = 1 8	7 9 - 7 9 =0	4 7 + 3 7 =1	1- 1 2 = 1 2